Tootfinder

Instacart Q1: revenue up 8% YoY to $820M, vs. $794.5M est., gross transaction value up 11% to $8.32B; CFO Nick Giovanni is retiring, replaced by Emily Reuter (Natalie Lung/Bloomberg)
https://www.bloomberg.com/news/articles/2024…

Exploiting Preference Elicitation in Interactive and User-centered Algorithmic Recourse: An Initial Exploration
Seyedehdelaram Esfahani, Giovanni De Toni, Bruno Lepri, Andrea Passerini, Katya Tentori, Massimo Zancanaro
https://arxiv.org/abs/2404.05270

Exploiting Preference Elicitation in Interactive and User-centered Algorithmic Recourse: An Initial Exploration
Algorithmic Recourse aims to provide actionable explanations, or recourse plans, to overturn potentially unfavourable decisions taken by automated machine learning models. In this paper, we propose an interaction paradigm based on a guided interaction pattern aimed at both eliciting the users' preferences and heading them toward effective recourse interventions. In a fictional task of money lending, we compare this approach with an exploratory interaction pattern based on a combination of alter…

Uniformly global observables for 1D maps with an indifferent fixed point
Giovanni Canestrari, Marco Lenci
https://arxiv.org/abs/2405.05948 https://<…

Uniformly global observables for 1D maps with an indifferent fixed point
We study the property of global-local mixing for full-branched expanding maps of either the half-line or the interval, with one indifferent fixed point. Global-local mixing expresses the decorrelation of global vs local observables w.r.t. to an infinite measure $μ$. Global observables are essentially bounded functions admitting an infinite-volume average, i.e., a limit for the average of the function over bigger and bigger intervals; local observables are integrable functions (both notions are…

‘At 80, I still have a lot of anger’: American poet Nikki Giovanni | Poetry | The Guardian https://www.theguardian.com/books/2024/feb/24/at-80-i-still-have-a-lot-of-anger-american-poet-nikki-giovanni

The role of non-scientific factors vis-a-vis the quality of publications in determining their scholarly impact
Giovanni Abramo, Ciriaco Andrea D'Angelo, Leonardo Grilli
https://arxiv.org/abs/2404.05345

The role of non-scientific factors vis-a-vis the quality of publications in determining their scholarly impact
In the evaluation of scientific publications' impact, the interplay between intrinsic quality and non-scientific factors remains a subject of debate. While peer review traditionally assesses quality, bibliometric techniques gauge scholarly impact. This study investigates the role of non-scientific attributes alongside quality scores from peer review in determining scholarly impact. Leveraging data from the first Italian Research Assessment Exercise (VTR 2001-2003) and Web of Science citations, …

An optically-dark merging system at z~6 detected by JWST
Giulia Rodighiero, Andrea Enia, Laura Bisigello, Giorgia Girardi, Giovanni Gandolfi, Mahsa Kohandel, Andrea Pallottini, Nicolo' Badinelli, Andrea Grazian, Andrea Ferrara, Benedetta Vulcani, Alessandro Bianchetti, Antoninto Marasco, Francesco Sinigaglia, Marco Castellano, Paola Santini, Paolo Cassata

An optically-dark merging system at z~6 detected by JWST
Near- to mid-Infrared observations (from Spitzer and JWST) have revealed a hidden population of galaxies at redshift z=3-6, called optically-dark objects, which are believed to be massive and dusty star-formers. While optically-dark sources are widely recognized as a significant component of the stellar mass function, the history of their stellar mass assembly remains unexplored. However, they are thought to be the progenitors of the more massive early-type galaxies found in present-day groups …

Foundations for operator algebraic tricategories
Giovanni Ferrer
https://arxiv.org/abs/2404.05193 https://arxiv.org/pdf/2404.05193

Foundations for operator algebraic tricategories
An operator algebraic tricategory is a higher categorical analogue of an operator algebra. For algebraic tricategories, Gordon, Power, and Street proved that every algebraic tricategory is equivalent to a Gray-category, a result later refined by Gurski. We adapt this result to the context of functional analysis, showing that every operator algebraic tricategory is equivalent to an operator Gray-category. We then categorify the Gelfand-Naimark theorem for operator algebras, inductively proving t…

🔊 #NowPlaying on BBCRadio3's #ThroughTheNight
Giovanni Maria Trabaci:
🎵 2 works for Arpa Doppia [Double Harp]
#GiovanniMariaTrabaci

Lipid-mediated hydrophobic gating in the BK potassium channel
Lucia Coronel, Giovanni Di Muccio, Brad Rothberg, Alberto Giacomello, Vincenzo Carnevale
https://arxiv.org/abs/2405.04644

Lipid-mediated hydrophobic gating in the BK potassium channel
The large-conductance, calcium-activated potassium (BK) channel lacks the typical intracellular bundle-crossing gate present in most ion channels of the 6TM family. This observation, initially inferred from Ca$^{2+}$-free-pore accessibility experiments and recently corroborated by a CryoEM structure of the non-conductive state, raises a puzzling question: how can gating occur in absence of steric hindrance? To answer this question, we carried out molecular simulations and accurate free energy c…

Critical non-linearity for some evolution equations with Fujita-type critical exponent
Giovanni Girardi
https://arxiv.org/abs/2404.06458 https://

Critical non-linearity for some evolution equations with Fujita-type critical exponent
We consider the Cauchy problem for a class of non-linear evolution equations in the form \[L(\partial_t,\partial_x) u=F(\partial_t^\ell u), \quad (t,x)\in [0,\infty)\times \mathbb{R}^n;\] here, $L(\partial_t,\partial_x)$ is a linear partial differential operator with constant coefficients, of order $m\geq 1$ with respect to the time variable $t$, and $\ell$ is a natural number satisfying $0\leq \ell\leq m-1$. For several different choices of $L$, many authors have investigated the existence of …

Top five reaches of 2024 NFL Draft: Panthers trading up for Jonathon Brooks, Giovanni Manu to Lions make list

https://www.cbssports.com/nfl/ne…

Top five reaches of 2024 NFL Draft: Panthers trading up for Jonathon Brooks, Giovanni Manu to Lions make list
These are the biggest reaches from all three days

Laminar planar jets of elastoviscoplastic fluids
Giovanni Soligo, Marco Edoardo Rosti
https://arxiv.org/abs/2404.03890 https://arxiv.…

Laminar planar jets of elastoviscoplastic fluids
We perform numerical simulations of planar jets of elastoviscoplastic (EVP) fluid (\citet{saramito2007new} model) at low Reynolds number. Three different configurations are considered: $(i)$ EVP jet in EVP ambient fluid, $(ii)$ EVP jet in Newtonian ambient fluid (miscible), and $(iii)$ EVP jet in Newtonian ambient fluid (immiscible). We investigate the effect of the Bingham number, \textit{i.e.} of the dimensionless yield stress of the EVP fluid, on the jet dynamics, and find a good agreement w…

🔊 #NowPlaying on BBCRadio3's #ThroughTheNight
Giovanni Maria Trabaci:
🎵 2 works for Arpa Doppia [Double Harp]
#GiovanniMariaTrabaci

A geometric characterization of known maximum scattered linear sets of $\mathrm{PG}(1,q^n)$
Giovanni Giuseppe Grimaldi, Somi Gupta, Giovanni Longobardi, Rocco Trombetti
https://arxiv.org/abs/2405.01374

A geometric characterization of known maximum scattered linear sets of $\mathrm{PG}(1,q^n)$
An $\mathbb{F}_q$- linear set $L=L_U$ of $Λ=\mathrm{PG}(V, \mathbb{F}_{q^n}) \cong \mathrm{PG}(r-1,q^n)$ is a set of points defined by non-zero vectors of an $\mathbb{F}_q$-subspace $U$ of $V$. The integer $\dim_{\mathbb{F}_q} U$ is called the rank of $L$. In [G. Lunardon, O. Polverino: Translation ovoids of orthogonal polar spaces. Forum Math. 16 (2004)], it was proven that any $\mathbb{F}_q$-linear set $L$ of $Λ$ of rank $u$ such that $\langle L \rangle=Λ$ is either a canonical subgeometry…

THz-assisted microscopy of silica matrix for biological materials encapsulation: a theoretical and experimental study
Matteo De Tullio, Giovanni Noviinverardi, Jonathan Houard, Marc Ropitaux, Ivan Blum, Francesco Carnovale, Gianluca Lattanzi, Simone Taioli, Gustav Eriksson, Mats Hulander, Martin Andersson, Angela Vella, Tommaso Morresi
https://

THz-assisted microscopy of silica matrix for biological materials encapsulation: a theoretical and experimental study
In this study, we use THz-assisted atom probe tomography (APT) to analyse silica matrices used to encapsulate biomolecules. This technique provides the chemical composition and 3D structure without significantly heating the biosample, which is crucial for studying soft organic molecules such as proteins. Our results show that THz pulses and a positive static field trigger controlled evaporation of silica matrices, enabling 4D imaging with chemical sensitivity comparable to UV laser-assisted APT…

Cowboys jumped on 'best kept secret' in the 2024 NFL Draft before any other team did https://www.yardbarker.com/nfl/articles/cowboys_jumped_on_best_kept_secret_in_the_2024_nfl_draft_befo…

Cowboys jumped on 'best kept secret' in the 2024 NFL Draft before any other team did
Write this name down, y'all: Giovanni Manu. The Tongan offensive tackle out of University of British Columbia is drawing the interest of many NFL teams, including the Dallas Cowboys, drawing 16 NFL teams to his Pro Day ahead of the 2024 NFL Draft. With some calling him the "best kept secret" in this year's draft process, Manu is a name on the rise thanks to an insane athletic profile.  According to NFL insider Jordan Schultz from TheScore, the Cowboys were the very first team to host him on a…

Linear degenerate symplectic flag varieties: symmetric degenerations and PBW locus
Magdalena Boos, Giovanni Cerulli Irelli, Xin Fang, Ghislain Fourier
https://arxiv.org/abs/2405.02739

Linear degenerate symplectic flag varieties: symmetric degenerations and PBW locus
We conceptualize in the paper the linear degenerate symplectic flag varieties as symmetric degenerations within the framework of type $A$ equioriented quivers. First, in the larger context of symmetric degenerations, we give a self-contained proof of the equivalence of different degeneration orders. Furthermore, we investigate the PBW locus: geometric properties of the degenerate varieties in this locus are proved by realizing them from different perspectives.

For years, historians thought decimal points emerged when German mathematician Christopher Clavius began using them while writing about astronomy in 1593.
But new evidence suggests the decimal point may be 150 years older than previously thought:
A 15th-century Venetian merchant named Giovanni Bianchini appears to have used the mathematical symbol in documents that date to between 1441 and 1450, according to a paper published this month in the journal Historia Mathematica.

Spectro-photometry of Phobos simulants: I. Detectability of hydrated minerals and organic bands
Antonin Wargnier, Thomas Gautier, Alain Doressoundiram, Giovanni Poggiali, Pierre Beck, Olivier Poch, Eric Quirico, Tomoki Nakamura, Hideaki Miyamoto, Shingo Kameda, Pedro H. Hasselmann, Nathalie Ruscassier, Arnaud Buch, Sonia Fornasier, Maria Antonietta Barucci

Spectro-photometry of Phobos simulants: I. Detectability of hydrated minerals and organic bands
Previous observations of Phobos and Deimos, the moons of Mars, have improved our understanding of these small bodies. However, their formation and composition remain poorly constrained. Physical and spectral properties suggest that Phobos may be a weakly thermal-altered captured asteroid but the dynamical properties of the martian system suggest a formation by giant collision similar to the Earth moon. In 2027, the JAXA's MMX mission aims to address these outstanding questions. We undertook mea…

History Trees and Their Applications
Giovanni Viglietta
https://arxiv.org/abs/2404.02673 https://arxiv.org/pdf/2404.02673

History Trees and Their Applications
In the theoretical study of distributed communication networks, "history trees" are a discrete structure that naturally models the concept that anonymous agents become distinguishable upon receiving different sets of messages from neighboring agents. By conveniently organizing temporal information in a systematic manner, history trees have been instrumental in the development of optimal deterministic algorithms for networks that are both anonymous and dynamically evolving. This note provides …

💪 Two-dimensional nanomaterial sets expansion record
#material

Two-dimensional nanomaterial sets expansion record
It is a common hack to stretch a balloon out to make it easier to inflate. When the balloon stretches, the width crosswise shrinks to the size of a string. Noah Stocek, a Ph.D. student collaborating with Western physicist Giovanni Fanchini, has developed a new nanomaterial that demonstrates the opposite of this phenomenon.

Numerical study of neutral and charged microgel suspensions: from single-particle to collective behavior
Giovanni Del Monte, Emanuela Zaccarelli
https://arxiv.org/abs/2404.04032 <…

Numerical study of neutral and charged microgel suspensions: from single-particle to collective behavior
We perform extensive Molecular Dynamics simulations of an ensemble of realistic microgel particles in swollen conditions in a wide range of packing fractions $ζ$. We compare neutral and charged microgels, where we consider charges distribution adherent to experimental conditions. Through a detailed analysis of single-particle behavior, we are able to identify the different regimes occurring upon increasing concentration: from shrinking to deformation and interpenetration, always connecting our…

A Parameter-Masked Mock Data Challenge for Beyond-Two-Point Galaxy Clustering Statistics
2pt Collaboration, Elisabeth Krause, Yosuke Kobayashi, Andr\'es N. Salcedo, Mikhail M. Ivanov, Tom Abel, Kazuyuki Akitsu, Raul E. Angulo, Giovanni Cabass, Sofia Contarini, Carolina Cuesta-Lazaro, ChangHoon Hahn, Nico Hamaus, Donghui Jeong, Chirag Modi, Nhat-Minh Nguyen, Takahiro Nishimichi, Enrique Paillas, Marcos Pellejero Iba\~nez, Oliver H. E. Philcox, Alice Pisani, Fabian Schmidt, Satoshi T…

A Parameter-Masked Mock Data Challenge for Beyond-Two-Point Galaxy Clustering Statistics
The last few years have seen the emergence of a wide array of novel techniques for analyzing high-precision data from upcoming galaxy surveys, which aim to extend the statistical analysis of galaxy clustering data beyond the linear regime and the canonical two-point (2pt) statistics. We test and benchmark some of these new techniques in a community data challenge "Beyond-2pt", initiated during the Aspen 2022 Summer Program "Large-Scale Structure Cosmology beyond 2-Point Statistics," whose first…

Superconducting properties and electronic structure of CuAl2-type transition-metal zirconide Fe1-xNixZr2
Ryunosuke Shimada, Yuto Watanabe, Lorenzo Tortora, Giovanni Tomassucci, Muammer Yasin Hacisaliho\v{g}lu, Hiroto Arima, Aichi Yamashita, Akira Miura, Chikako Moriyoshi, Naurang L. Saini, Yoshikazu Mizuguchi
https://arxiv.org/a…

Superconducting properties and electronic structure of CuAl2-type transition-metal zirconide Fe1-xNixZr2
CuAl2-type transition-metal (Tr) zirconides are superconductor family, and the Tr-site element substitution largely modifies its transition temperature (Tc). Here, we synthesized polycrystalline samples of Fe1-xNixZr2 by arc melting. From magnetic susceptibility measurements, bulk superconductivity was observed for 0.4 <= x <= 0.8, and the highest Tc of 2.8 K was observed for x = 0.6. The obtained superconductivity phase diagram exhibits dome-shaped trend, which is similar to unconventional sup…

"Are Adversarial Phishing Webpages a Threat in Reality?" Understanding the Users' Perception of Adversarial Webpages
Ying Yuan, Qingying Hao, Giovanni Apruzzese, Mauro Conti, Gang Wang
https://arxiv.org/abs/2404.02832

"Are Adversarial Phishing Webpages a Threat in Reality?" Understanding the Users' Perception of Adversarial Webpages
Machine learning based phishing website detectors (ML-PWD) are a critical part of today's anti-phishing solutions in operation. Unfortunately, ML-PWD are prone to adversarial evasions, evidenced by both academic studies and analyses of real-world adversarial phishing webpages. However, existing works mostly focused on assessing adversarial phishing webpages against ML-PWD, while neglecting a crucial aspect: investigating whether they can deceive the actual target of phishing -- the end users. I…

Induced charges in a Thomas-Fermi metal: insights from molecular simulations
Swetha Nair, Giovanni Pireddu, Benjamin Rotenberg
https://arxiv.org/abs/2403.04487

Induced charges in a Thomas-Fermi metal: insights from molecular simulations
We study the charge induced in a Thomas-Fermi metal by an ion in vacuum, using an atomistic description employed in constant-potential molecular dynamics simulations, and compare the results with the predictions from continuum electrostatics. Specifically, we investigate the effects of the Thomas-Fermi screening length $l_{TF}$ and the position $d$ of the ion with respect to the surface on the induced charge distribution in a graphite electrode. The continuum predictions capture most of the fea…

Come è cambiata la Russia di Putin a due anni dall’invasione dell’Ucraina, di Giovanni Savino
#Russia

Come è cambiata la Russia di Putin a due anni dall'invasione dell'Ucraina - Valigia Blu
Due anni dopo l’annuncio dell’avvio dell’operazione speciale militare, nome ufficiale dato dal Cremlino alla guerra contro l’Ucraina, le sensazioni sembrano contrastare quelle del primo anniversario, quando si riteneva pressoché certa la vittoria ucraina e si dava per scontato la riconquista non solo del Donbas ma anche della Crimea, annessa dalla Russia nel 2014. A distanza di dodici mesi, a queste previsioni se ne sono sostituite altre, dal tono identico ma di segno opposto, sul trio…

Third density and acoustic virial coefficients of helium isotopologues from ab initio calculations
Daniele Binosi, Giovanni Garberoglio, Allan H. Harvey
https://arxiv.org/abs/2405.04353

Third density and acoustic virial coefficients of helium isotopologues from ab initio calculations
Improved two-body and three-body potentials for helium have been used to calculate from first principles the third density and acoustic virial coefficients for both $^4$He and $^3$He. For the third density virial coefficient $C(T)$, uncertainties have been reduced by a factor of 4--5 compared to the previous state of the art; the accuracy of first-principles $C(T)$ now exceeds that of the best experiments by more than two orders of magnitude. The range of calculations has been extended to tempe…

Training-Free Deepfake Voice Recognition by Leveraging Large-Scale Pre-Trained Models
Alessandro Pianese, Davide Cozzolino, Giovanni Poggi, Luisa Verdoliva
https://arxiv.org/abs/2405.02179

Training-Free Deepfake Voice Recognition by Leveraging Large-Scale Pre-Trained Models
Generalization is a main issue for current audio deepfake detectors, which struggle to provide reliable results on out-of-distribution data. Given the speed at which more and more accurate synthesis methods are developed, it is very important to design techniques that work well also on data they were not trained for.In this paper we study the potential of large-scale pre-trained models for audio deepfake detection, with special focus on generalization ability. To this end, the detection problem…

Action potentials in vitro: theory and experiment
Ziqi Pi, Giovanni Zocchi
https://arxiv.org/abs/2403.03369 https://arxiv.org/pdf/240…

Action potentials in vitro: theory and experiment
Action potential generation underlies some of the most consequential dynamical systems on Earth, from brains to hearts. It is therefore interesting to develop synthetic cell-free systems, based on the same molecular mechanisms, which may allow for the exploration of parameter regions and phenomena not attainable, or not apparent, in the live cell. We previously constructed such a synthetic system, based on biological components, which fires action potentials. We call it "Artificial Axon". The s…

Quantum Big-Bounce as a phenomenology of RQM in the Mini-superspace
Simone Lo Franco, Giovanni Montani
https://arxiv.org/abs/2404.02802 https://

Quantum Big-Bounce as a phenomenology of RQM in the Mini-superspace
We investigate the emergence of a quantum Big-Bounce in the context of an isotropic Universe, filled by a self-interacting scalar field, which plays the role of a physical clock. The bouncing cosmology is the result of a scattering process, driven by the scalar field potential, which presence breaks down the frequency separation of the Wheeler-DeWitt equation, treated in strict analogy to a relativistic quantum system. Differently from previous analyses, we consider a really perturbative self-i…

Feedback mechanisms stopping the star formation in a pair of massive galaxies in the early Universe
Pablo G. P\'erez-Gonz\'alez, Francesco D`Eugenio, Bruno Rodr\'iguez del Pino, Hannah \"Ubler, Roberto Maiolino, Santiago Arribas, Giovanni Cresci, Isabella Lamperti, Andrew J. Bunker, Stefano Carniani, Stephane Charlot, Christopher J. Willott, Torsten B\"oker, Eleonora Parlanti, Jan Scholtz, Giacomo Venturi, Guillermo Barro, Luca Costantin, Ignacio Mart\'in-Nava…

Feedback mechanisms stopping the star formation in a pair of massive galaxies in the early Universe
Feedback is the key physical mechanism regulating galaxy formation. Stars in galaxies form when baryons radiatively cool down and fall into gravitational wells. Eventually, star formation quenches as gas is depleted and/or perturbed by feedback processes, no longer being able to collapse and condense. For massive galaxies, astronomers identify feedback from accreting supermassive black holes (active galactic nuclei, AGN) as the main agent responsible for quenching. We report the first spatially…

The Meta Distribution of the SIR in Joint Communication and Sensing Networks
Kun Ma, Chenyuan Feng, Giovanni Geraci, Howard H. Yang
https://arxiv.org/abs/2404.01672

The Meta Distribution of the SIR in Joint Communication and Sensing Networks
In this paper, we introduce a novel mathematical framework for assessing the performance of joint communication and sensing (JCAS) in wireless networks, employing stochastic geometry as an analytical tool. We focus on deriving the meta distribution of the signal-to-interference ratio (SIR) for JCAS networks. This approach enables a fine-grained quantification of individual user or radar performance intrinsic to these networks. Our work involves the modeling of JCAS networks and the derivation o…

🔊 #NowPlaying on KEXP's #SonicReducer
Giovanni Orsini:
🎵 Yellow
#GiovanniOrsini
https://open.spotify.com/track/6pE2Zl6N5tR68U8cQdEhhO
https://giovanniorsini.bandcamp.com/track/yellow

Regularity results for almost-minimizers of anisotropic free interface problem with H\"older dependence on the position
Luca Esposito, Lorenzo Lamberti, Giovanni Pisante
https://arxiv.org/abs/2404.02086

Regularity results for almost-minimizers of anisotropic free interface problem with Hölder dependence on the position
We establish regularity results for almost-minimizers of a class of variational problems involving both bulk and interface energies. The bulk energy is of Dirichlet type. The surface energy exhibits anisotropic behaviour and is defined by means of an ellipsoidal density that is Hölder continuous with respect to the position variable.

Misspecification of Multiple Scattering in Scalar Wave Fields and its Impact in Ultrasound Tomography
Eduardo P\'erez, Sebastian Semper, Sayako Kodera, Florian R\"omer, Giovanni Del Galdo
https://arxiv.org/abs/2405.01220

Misspecification of Multiple Scattering in Scalar Wave Fields and its Impact in Ultrasound Tomography
In this work, we investigate the localization of targets in the presence of multiple scattering. We focus on the often omitted scenario in which measurement data is affected by multiple scattering, and a simpler model is employed in the estimation. We study the impact of such model mismatch by means of the Misspecified Cramér-Rao Bound (MCRB). In numerical simulations inspired by tomographic inspection in ultrasound nondestructive testing, the MCRB is shown to correctly describe the estimation…

Integrating SystemC-AMS Power Modeling with a RISC-V ISS for Virtual Prototyping of Battery-operated Embedded Devices
Mohamed Amine Hamdi, Giovanni Pollo, Matteo Risso, Germain Haugou, Alessio Burrello, Enrico Macii, Massimo Poncino, Sara Vinco, Daniele Jahier Pagliari
https://arxiv.org/abs/2404.01861

Integrating SystemC-AMS Power Modeling with a RISC-V ISS for Virtual Prototyping of Battery-operated Embedded Devices
RISC-V cores have gained a lot of popularity over the last few years. However, being quite a recent and novel technology, there is still a gap in the availability of comprehensive simulation frameworks for RISC-V that cover both the functional and extra-functional aspects. This gap hinders progress in the field, as fast yet accurate system-level simulation is crucial for Design Space Exploration (DSE). This work presents an open-source framework designed to tackle this challenge, integrating …

Semi-device independent characterization of multiphoton indistinguishability
Giovanni Rodari, Leonardo Novo, Riccardo Albiero, Alessia Suprano, Carlos T. Tavares, Eugenio Caruccio, Francesco Hoch, Taira Giordani, Gonzalo Carvacho, Marco Gardina, Niki Di Giano, Serena Di Giorgio, Giacomo Corrielli, Francesco Ceccarelli, Roberto Osellame, Nicol\`o Spagnolo, Ernesto F. Galv\~ao, Fabio Sciarrino

Semi-device independent characterization of multiphoton indistinguishability
Multiphoton indistinguishability is a central resource for quantum enhancement in sensing and computation. Developing and certifying large scale photonic devices requires reliable and accurate characterization of this resource, preferably using methods that are robust against experimental errors. Here, we propose a set of methods for the characterization of multiphoton indistinguishability, based on measurements of bunching and photon number variance. Our methods are robust in a semi-device ind…

Optimal Policy Learning with Observational Data in Multi-Action Scenarios: Estimation, Risk Preference, and Potential Failures
Giovanni Cerulli
https://arxiv.org/abs/2403.20250

Optimal Policy Learning with Observational Data in Multi-Action Scenarios: Estimation, Risk Preference, and Potential Failures
This paper deals with optimal policy learning (OPL) with observational data, i.e. data-driven optimal decision-making, in multi-action (or multi-arm) settings, where a finite set of decision options is available. It is organized in three parts, where I discuss respectively: estimation, risk preference, and potential failures. The first part provides a brief review of the key approaches to estimating the reward (or value) function and optimal policy within this context of analysis. Here, I delin…

🔊 #NowPlaying on BBCRadio3's #EssentialClassics
Giovanni Gabrieli, London Symphony Brass & Eric Crees:
🎵 Canzon Š 10, S.137
#GiovanniGabrieli #LondonSymphonyBrass #EricCrees

Harmonic locus and Calogero-Moser spaces
Giovanni Felder, Alexander P. Veselov
https://arxiv.org/abs/2404.18471 https://arxiv.org/pdf…

Harmonic locus and Calogero-Moser spaces
We study the harmonic locus consisting of the monodromy-free Schrödinger operators with rational potential and quadratic growth at infinity. It is known after Oblomkov that it can be identified with the set of all partitions via the Wronskian map for Hermite polynomials. We show that the harmonic locus can also be identified with the subset of the Calogero--Moser space introduced by Wilson, which is fixed by the symplectic action of $\mathbb C^\times.$ As a corollary, for the multiplicity-free…

"Humor ist die Medizin, die am wenigsten kostet und am leichtesten einzunehmen ist." (Giovanni Guareschi, 1908–1968, ital. Schriftsteller)
[via https://ub.hsu-hh.de/go/moinmoin]

Results of the 2022 ECFA Early-Career Researchers Panel survey on career prospects and diversity
Julia Allen, Kamil Augsten, Giovanni Benato, Neven Blaskovic Kraljevic, Francesco Brizioli, Eleonora Diociaiuti, Viktoria Hinger, Armin Ilg, Kate\v{r}ina Jarkovsk\'a, Katar\'ina K\v{r}\'i\v{z}kov\'a Gajdo\v{s}ov\'a, Magdalena Kuich, Aleksandra Lelek, Louis Moureaux, Holly Pacey, Guillaume Pietrzyk, G\'eraldine R\"auber, Giulia Ripellino, Steven Schramm, Mariana …

Results of the 2022 ECFA Early-Career Researchers Panel survey on career prospects and diversity
This document presents the outcomes of a comprehensive survey conducted among early career researchers (ECRs) in academic particle physics. Running from September 24, 2022, to March 3, 2023, the survey gathered responses from 759 ECRs employed in 39 countries. The study aimed to gain insights into the career prospects and experiences of ECRs while also delving into diversity and sociological aspects within particle physics research. The survey results are presented in a manner consistent with t…

Come è cambiata la Russia di Putin a due anni dall’invasione dell’Ucraina, di Giovanni Savino
#Russia

Come è cambiata la Russia di Putin a due anni dall'invasione dell'Ucraina - Valigia Blu
Due anni dopo l’annuncio dell’avvio dell’operazione speciale militare, nome ufficiale dato dal Cremlino alla guerra contro l’Ucraina, le sensazioni sembrano contrastare quelle del primo anniversario, quando si riteneva pressoché certa la vittoria ucraina e si dava per scontato la riconquista non solo del Donbas ma anche della Crimea, annessa dalla Russia nel 2014. A distanza di dodici mesi, a queste previsioni se ne sono sostituite altre, dal tono identico ma di segno opposto, sul trio…

A Higher-Order Lens for Social Systems
Giulia Preti, Adriano Fazzone, Giovanni Petri, Gianmarco De Francisci Morales
https://arxiv.org/abs/2402.18470 https…

A Higher-Order Lens for Social Systems
Despite the widespread adoption of higher-order mathematical structures such as hypergraphs, methodological tools for their analysis lag behind those for traditional graphs. This work addresses a critical gap in this context by proposing two micro-canonical random null models for directed hypergraphs: the Directed Hypergraph Configuration Model (DHCM) and the Directed Hypergraph JOINT Model (DHJM). These models preserve essential structural properties of directed hypergraphs such as node in- an…

GA-NIFS: An extremely nitrogen-loud and chemically stratified galaxy at $z\sim 5.55$
Xihan Ji, Hannah \"Ubler, Roberto Maiolino, Francesco D'Eugenio, Santiago Arribas, Andrew J. Bunker, St\'ephane Charlot, Michele Perna, Bruno Rodr\'iguez Del Pino, Torsten B\"oker, Giovanni Cresci, Mirko Curti, Nimisha Kumari, Isabella Lamperti
…

GA-NIFS: An extremely nitrogen-loud and chemically stratified galaxy at $z\sim 5.55$
We report the chemical abundance pattern of GS\_3073, a galaxy at $z=5.55$ which was previously confirmed to host an overmassive active black hole, by leveraging the detection of about 40 emission lines, combining JWST/NIRSpec observations and ground-based (VLT/VIMOS) data. By using rest-frame UV emission lines, which trace high-density ($\sim 10^5~{\rm cm}^{-3}$) and highly ionized gas, we derived an abundance ratio of $\rm log(N/O) = 0.46^{+0.12}_{-0.09}$. At an estimated metallicity of $0.2~…

Quantum Big-Bounce as a phenomenology of RQM in the Mini-superspace
Simone Lo Franco, Giovanni Montani
https://arxiv.org/abs/2404.02802 https://

Quantum Big-Bounce as a phenomenology of RQM in the Mini-superspace
We investigate the emergence of a quantum Big-Bounce in the context of an isotropic Universe, filled by a self-interacting scalar field, which plays the role of a physical clock. The bouncing cosmology is the result of a scattering process, driven by the scalar field potential, which presence breaks down the frequency separation of the Wheeler-DeWitt equation, treated in strict analogy to a relativistic quantum system. Differently from previous analyses, we consider a really perturbative self-i…

Il parroco, fin dal 1490, doveva versare al monastero di Murano un "mocenigo", antica moneta veneziana, coniata dal doge Giovanni Mocenigo, che valeva 1 lira e 4 soldi.
ma che roba da matti!
#veneto

T-odd gluon distribution functions in a spectator model
Alessandro Bacchetta, Francesco Giovanni Celiberto, Marco Radici
https://arxiv.org/abs/2402.17556 h…

T-odd gluon distribution functions in a spectator model
We present a model calculation of T-odd transverse-momentum-dependent distributions of gluons in the nucleon. The model is based on the assumption that a nucleon can emit a gluon, and what remains after the emission is treated as a single spectator particle. This spectator particle is considered to be on-shell, but its mass is allowed to take a continuous range of values, described by a spectral function. The final-state interaction that is necessary to generate T-odd functions is modeled as th…

🔊 #NowPlaying on BBCRadio3's #ThroughTheNight
Georg Philipp Telemann, Giovanni Antonini, Il Giardino Armonico & Giovanni Antonini:
🎵 Concerto in C, TWV 51:C1
#GeorgPhilippTelemann #GiovanniAntonini #IlGiardinoArmonico

A model for galaxy-galaxy strong lensing statistics in surveys
Giovanni Ferrami, Stuart Wyithe
https://arxiv.org/abs/2404.03143 https://

A model for galaxy-galaxy strong lensing statistics in surveys
Photometric wide-area observations in the next decade will be capable of detecting a large number of galaxy-scale strong gravitational lenses, increasing the gravitational lens sample size by orders of magnitude. To aid in forecasting and analysis of these surveys, we construct a flexible model based on observed distributions for the lens and source properties and test it on the results of past lens searches, including SL2S, SuGOHI and searches on the COSMOS HST and DES fields. We use this mode…

Competing bootstrap processes on the random graph $G(n,p)$
Michele Garetto, Emilio Leonardi, Giovanni Luca Torrisi
https://arxiv.org/abs/2405.00363 https:/…

Competing bootstrap processes on the random graph $G(n,p)$
We consider a generalization of classic bootstrap percolation in which two competing processes concurrently evolve on the same graph $G(n,p)$. Nodes can be in one of three states, conveniently represented by different colors: red, black and white. Initially, a given number $a_R$ of active red nodes (red seeds) are selected uniformly at random among the $n$ nodes. Similarly, a given number $a_B$ of active black nodes (black seeds) are selected uniformly at random among the other $n-a_R$ nodes. A…

VAMP: Visual Analytics for Microservices Performance
Luca Traini, Jessica Leone, Giovanni Stilo, Antinisca Di Marco
https://arxiv.org/abs/2404.14273 https:…

VAMP: Visual Analytics for Microservices Performance
Analysis of microservices' performance is a considerably challenging task due to the multifaceted nature of these systems. Each request to a microservices system might raise several Remote Procedure Calls (RPCs) to services deployed on different servers and/or containers. Existing distributed tracing tools leverage swimlane visualizations as the primary means to support performance analysis of microservices. These visualizations are particularly effective when it is needed to investigate indivi…

Dual Simplex Volume Maximization for Simplex-Structured Matrix Factorization
Maryam Abdolali, Giovanni Barbarino, Nicolas Gillis
https://arxiv.org/abs/2403.20197

Dual Simplex Volume Maximization for Simplex-Structured Matrix Factorization
Simplex-structured matrix factorization (SSMF) is a generalization of nonnegative matrix factorization, a fundamental interpretable data analysis model, and has applications in hyperspectral unmixing and topic modeling. To obtain identifiable solutions, a standard approach is to find minimum-volume solutions. By taking advantage of the duality/polarity concept for polytopes, we convert minimum-volume SSMF in the primal space to a maximum-volume problem in the dual space. We first prove the iden…

Connecting physics to systems with modular spin-circuits
Kemal Selcuk, Saleh Bunaiyan, Nihal Sanjay Singh, Shehrin Sayed, Samiran Ganguly, Giovanni Finocchio, Supriyo Datta, Kerem Y. Camsari
https://arxiv.org/abs/2404.19345

Connecting physics to systems with modular spin-circuits
An emerging paradigm in modern electronics is that of CMOS + $\sf X$ requiring the integration of standard CMOS technology with novel materials and technologies denoted by $\sf X$. In this context, a crucial challenge is to develop accurate circuit models for $\sf X$ that are compatible with standard models for CMOS-based circuits and systems. In this perspective we present physics-based, experimentally benchmarked modular circuit models that can be used to evaluate a class of CMOS + $\sf X$ sy…

Many-Objective Evolutionary Influence Maximization: Balancing Spread, Budget, Fairness, and Time
Elia Cunegatti, Leonardo Lucio Custode, Giovanni Iacca
https://arxiv.org/abs/2403.18755

Many-Objective Evolutionary Influence Maximization: Balancing Spread, Budget, Fairness, and Time
The Influence Maximization (IM) problem seeks to discover the set of nodes in a graph that can spread the information propagation at most. This problem is known to be NP-hard, and it is usually studied by maximizing the influence (spread) and, optionally, optimizing a second objective, such as minimizing the seed set size or maximizing the influence fairness. However, in many practical scenarios multiple aspects of the IM problem must be optimized at the same time. In this work, we propose a fi…

Causal blind spots when using prediction models for treatment decisions
Nan van Geloven, Ruth H Keogh, Wouter van Amsterdam, Giovanni Cin\`a, Jesse H. Krijthe, Niels Peek, Kim Luijken, Sara Magliacane, Pawe{\l} Morzywo{\l}ek, Thijs van Ommen, Hein Putter, Matthew Sperrin, Junfeng Wang, Daniala L. Weir, Vanessa Didelez
https://ar…

Causal blind spots when using prediction models for treatment decisions
Prediction models are increasingly proposed for guiding treatment decisions, but most fail to address the special role of treatments, leading to inappropriate use. This paper highlights the limitations of using standard prediction models for treatment decision support. We identify 'causal blind spots' in three common approaches to handling treatments in prediction modelling and illustrate potential harmful consequences in several medical applications. We advocate for an extension of guidelines …

This https://arxiv.org/abs/2401.00841 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_mat…

Tarski's least fixed point theorem: A predicative type theoretic formulation
We provide a type theoretic treatment of the paper "On Tarski's fixed point theorem" by Giovanni Curi. There are benefits to having a type theoretic formulation apart from routine implementation in a proof assistant. By taking advantage of (higher) inductive types, we can avoid complicated set theoretic constructions. Arguably, this results in a presentation that is conceptually clearer. Additionally, due the predicative admissibility of (higher) inductive types we take a step towards the "syst…

Misspecification of Multiple Scattering in Scalar Wave Fields and its Impact in Ultrasound Tomography
Eduardo P\'erez, Sebastian Semper, Sayako Kodera, Florian R\"omer, Giovanni Del Galdo
https://arxiv.org/abs/2405.01220

Misspecification of Multiple Scattering in Scalar Wave Fields and its Impact in Ultrasound Tomography
In this work, we investigate the localization of targets in the presence of multiple scattering. We focus on the often omitted scenario in which measurement data is affected by multiple scattering, and a simpler model is employed in the estimation. We study the impact of such model mismatch by means of the Misspecified Cramér-Rao Bound (MCRB). In numerical simulations inspired by tomographic inspection in ultrasound nondestructive testing, the MCRB is shown to correctly describe the estimation…

GA-NIFS: NIRSpec reveals evidence for non-circular motions and AGN feedback in GN20
Hannah \"Ubler, Francesco D'Eugenio, Michele Perna, Santiago Arribas, Gareth C. Jones, Andrew J. Bunker, Stefano Carniani, St\'ephane Charlot, Roberto Maiolino, Bruno Rodr\'iguez del Pino, Chris J. Willott, Torsten B\"oker, Giovanni Cresci, Nimisha Kumari, Isabella Lamperti, Eleonora Parlanti, Jan Scholtz, Giacomo Venturi
https://arxiv.org/abs/2403.03192 https://arxiv.org/pdf/2403.03192
arXiv:2403.03192v1 Announce Type: new
Abstract: We present rest-frame optical data of the z~4 sub-millimeter galaxy GN20 obtained with JWST/NIRSpec in integral field spectroscopy (IFS) mode. The H$\alpha$ emission is asymmetric and clumpy and extends over a projected distance of more than 15 kpc. To first order, the large-scale ionised gas kinematics are consistent with a turbulent ($\sigma\sim90$ km/s), rotating disc ($v_{\rm rot}\sim500$ km/s), congruent with previous studies of its molecular and ionised gas kinematics. However, we also find clear evidence for non-circular motions in the H$\alpha$ kinematics. We discuss their possible connection with various scenarios, such as external perturbations, accretion or radial flows. In the centre of GN20, we find broad line emission (FWHM $\sim1000-2000$ km/s) in the H$\alpha$ [N II] complex, suggestive of fast, AGN-driven winds or, alternatively, of the broad-line region of an active black hole. Elevated values of [N II]$\lambda6583$/H$\alpha>0.4$ and EW(H$\alpha)>6$ \r{A}, throughout large parts of GN20 suggest that feedback from the active black hole is able to photo-ionise the interstellar medium. Our data corroborates that GN20 offers a unique opportunity to observe key processes in the evolution of the most massive present-day galaxies acting in concert, over 12 billion years ago.

Analyzing the inter-domain vs intra-domain knowledge flows
Giovanni Abramo, Ciriaco Andrea D'Angelo
https://arxiv.org/abs/2404.01818 https://

Analyzing the inter-domain vs intra-domain knowledge flows
Similar to how innovations often find success in fields other than their original domains, in this study we explore whether the same holds true for scientific discoveries. We investigate the flow of knowledge across scientific disciplines, focusing on connections between citing and cited publications. Specifically, we analyze the connections among cited publications from 2015 indexed in the Web of Science and their citing counterparts to measure rates of knowledge dissemination within and acros…

Probing Stellar Clusters from Gaia DR2 as Galactic PeVatrons: I -- Expected Gamma-ray and Neutrino Emission
Alison M. W. Mitchell, Giovanni Morlino, Silvia Celli, Stefano Menchiari, Andreas Specovius
https://arxiv.org/abs/2403.16650

Probing Stellar Clusters from Gaia DR2 as Galactic PeVatrons: I -- Expected Gamma-ray and Neutrino Emission
Young & massive stellar clusters (SCs) are a potential source of galactic cosmic rays up to very high energies as a result of two possible acceleration scenarios. Collective stellar winds from massive member stars form a wind-blown bubble with a termination shock (TS) at which particle acceleration to PeV energies may occur. Furthermore, shock acceleration may occur at SNRs expanding inside the bubble. By applying a model of CR acceleration at both the wind TS and SNR shocks to catalogues of kn…

Lessons Learned in Performing a Trustworthy AI and Fundamental Rights Assessment
Marjolein Boonstra, Fr\'ed\'erick Bruneault, Subrata Chakraborty, Tjitske Faber, Alessio Gallucci, Eleanore Hickman, Gerard Kema, Heejin Kim, Jaap Kooiker, Elisabeth Hildt, Annegret Lamad\'e, Emilie Wiinblad Mathez, Florian M\"oslein, Genien Pathuis, Giovanni Sartor, Marijke Steege, Alice Stocco, Willy Tadema, Jarno Tuimala, Isabel van Vledder, Dennis Vetter, Jana Vetter, Magnus Westerlund…

Lessons Learned in Performing a Trustworthy AI and Fundamental Rights Assessment
This report shares the experiences, results and lessons learned in conducting a pilot project ``Responsible use of AI'' in cooperation with the Province of Friesland, Rijks ICT Gilde-part of the Ministry of the Interior and Kingdom Relations (BZK) (both in The Netherlands) and a group of members of the Z-Inspection$^{\small{\circledR}}$ Initiative. The pilot project took place from May 2022 through January 2023. During the pilot, the practical application of a deep learning algorithm from the p…

🔊 #NowPlaying on BBCRadio3's #ThroughTheNight
Giovanni Battista Bononcini, Michaela Riener, Lotz trio & Musica Florea:
🎵 No, non più guerra, aria from the opera 'L'Abdolomino'
#GiovanniBattistaBononcini #MichaelaRiener #Lotztrio #MusicaFlorea

Computing the LCP Array of a Labeled Graph
Jarno Alanko, Davide Cenzato, Nicola Cotumaccio, Sung-Hwan Kim, Giovanni Manzini, Nicola Prezza
https://arxiv.org/abs/2404.14235

Computing the LCP Array of a Labeled Graph
The LCP array is an important tool in stringology, allowing to speed up pattern matching algorithms and enabling compact representations of the suffix tree. Recently, Conte et al. [DCC 2023] and Cotumaccio et al. [SPIRE 2023] extended the definition of this array to Wheeler DFAs and, ultimately, to arbitrary labeled graphs, proving that it can be used to efficiently solve matching statistics queries on the graph's paths. In this paper, we provide the first efficient algorithm building the LCP a…

A model for galaxy-galaxy strong lensing statistics in surveys
Giovanni Ferrami, Stuart Wyithe
https://arxiv.org/abs/2404.03143 https://

A model for galaxy-galaxy strong lensing statistics in surveys
Photometric wide-area observations in the next decade will be capable of detecting a large number of galaxy-scale strong gravitational lenses, increasing the gravitational lens sample size by orders of magnitude. To aid in forecasting and analysis of these surveys, we construct a flexible model based on observed distributions for the lens and source properties and test it on the results of past lens searches, including SL2S, SuGOHI and searches on the COSMOS HST and DES fields. We use this mode…

Uncovering the Mechanism of Chiral Three-Nucleon Force in Driving Spin-Orbit Splitting
Tokuro Fukui, Giovanni De Gregorio, Angela Gargano
https://arxiv.org/abs/2404.02007

Uncovering the Mechanism of Chiral Three-Nucleon Force in Driving Spin-Orbit Splitting
The three-nucleon force (3NF) is crucial in shaping the shell structure of atomic nuclei, particularly impacting the enhancement of spin-orbit (SO) splitting, especially in nuclei with significant deviations from stability. Despite its importance, the specific mechanisms driving this enhancement remain unclear. In this study, we introduce a decomposition scheme based on the rank of irreducible tensors forming the 3NF, derived from chiral effective field theory at next-to-next-to-leading order, …

System size scaling of triangularity effects on global temperature gradient-driven gyrokinetic simulations
Giovanni Di Giannatale, Alberto Bottino, Stephan Brunner, Moahan Murugappan, Laurent Villard
https://arxiv.org/abs/2402.16216

System size scaling of triangularity effects on global temperature gradient-driven gyrokinetic simulations
In this work, we explore the triangularity effects on turbulent transport employing global gyrokinetic simulations performed with the ORB5 code. Numerous experiments on the Tokamak à Configuration Variable (TCV) and, more recently, on the DIII-D machine, have demonstrated superior confinement properties in L-mode of negative triangularity (NT) over positive triangularity (PT) configuration. This presents a particularly attractive scenario, as L-mode operation eliminates or significantly mitiga…

The existence theorem for the steady-state Navier-Stokes equations with nonhomogeneous slip boundary conditions in two-dimensional multiply-connected bounded domains
Giovanni P. Galdi, Tatsuki Yamamoto
https://arxiv.org/abs/2403.00164

The existence theorem for the steady-state Navier-Stokes equations with nonhomogeneous slip boundary conditions in two-dimensional multiply-connected bounded domains
We study the nonhomogeneous boundary value problem for the steady-state Navier-Stokes equations under the slip boundary conditions in two-dimensional multiply-connected bounded domains. Employing the approach of Korobkov-Pileckas-Russo (Ann. Math. 181(2), 769-807, 2015), we prove that this problem has a solution if the friction coefficient is sufficiently large compared with the kinematic viscosity constant and the curvature of the boundary. No additional assumption (other than the necessary re…

Temperature dependence of Coherent versus spontaneous Raman Scattering
Giovanni Batignani, Emanuele Mai, Miles Martinati, Mohanan M. Neethish, Shaul Mukamel, Tullio Scopigno
https://arxiv.org/abs/2405.00521

Temperature dependence of Coherent versus spontaneous Raman Scattering
Due to their sub picosecond temporal resolution, coherent Raman spectroscopies have been proposed as a viable extension of Spontaneous Raman (SR) thermometry, to determine dynamics of mode specific vibrational energy content during out of equilibrium molecular processes. Here we show that the presence of multiple laser fields stimulating the vibrational coherences introduces additional quantum pathways, resulting in destructive interference. This ultimately reduces the thermal sensitivity of si…

🔊 #NowPlaying on BBCRadio3's #ThroughTheNight
Alessandro Scarlatti, Giovanni Battista Guarini, Emma Kirkby, Evelyn Tubb, Deborah Roberts, Tessa Bonner, Mary Nichols & Anthony Rooley:
🎵 Cor mio, deh non languire [Dear heart, I prithee do not waste away]
#EmmaKirkby

Predictive power of the Berezinskii-Kosterlitz-Thouless theory based on Renormalization Group throughout the BCS-BEC crossover in 2D superconductors
Giovanni Midei, Koichiro Furutani, Luca Salasnich, Andrea Perali
https://arxiv.org/abs/2403.03025

Predictive power of the Berezinskii-Kosterlitz-Thouless theory based on Renormalization Group throughout the BCS-BEC crossover in 2D superconductors
Recent experiments on 2D superconductors allow the characterization of the critical temperature and of the phase diagram across the BCS-BEC crossover as a function of density. We obtain from these experiments the microscopic parameters of the superconducting state at low temperatures by the BCS mean-field approach. For Li$_x$ZrNCl, the extracted parameters are used to evaluate the superconducting phase stiffness and the Berezinskii-Kosterlitz-Thouless (BKT) critical temperature throughout the B…

Is downward conduction possible in turbulent convection driven by internal heating?
Ali Arslan, Giovanni Fantuzzi, John Craske, Andrew Wynn
https://arxiv.org/abs/2402.19240

Is downward conduction possible in turbulent convection driven by internal heating?
Consider an internally heated fluid between parallel plates with fixed thermal fluxes. Can the upward convective heat transport due to turbulence be so effective that the top plate is on average hotter than the bottom one, causing a downward conductive heat flux? For a large class of heat sources that vary in the direction of gravity, we prove that the average temperature difference between the bottom and top plates satisfies $\langle δT \rangle_h \geq σR^{-1/3} - μ$, where $R$ is a `flux' R…

First-order rhombohedral to cubic phase transition in photoexcited GeTe
Matteo Furci, Giovanni Marini, Matteo Calandra
https://arxiv.org/abs/2404.19339 htt…

First-order rhombohedral to cubic phase transition in photoexcited GeTe
Photoexcited GeTe undergoes a non-thermal phase transition from a rhombohedral to a rocksalt crystalline phase. The microscopic mechanism and the nature of the transition are unclear. By using constrained density functional perturbation theory and by accounting for quantum anharmonicity within the stochastic self-consistent harmonic approximation, we show that the non-thermal phase transition is strongly first order and does not involve phonon softening, at odd with the thermal one. The transit…

Closed-Form Bounds for DP-SGD against Record-level Inference
Giovanni Cherubin, Boris K\"opf, Andrew Paverd, Shruti Tople, Lukas Wutschitz, Santiago Zanella-B\'eguelin
https://arxiv.org/abs/2402.14397

Closed-Form Bounds for DP-SGD against Record-level Inference
Machine learning models trained with differentially-private (DP) algorithms such as DP-SGD enjoy resilience against a wide range of privacy attacks. Although it is possible to derive bounds for some attacks based solely on an $(\varepsilon,δ)$-DP guarantee, meaningful bounds require a small enough privacy budget (i.e., injecting a large amount of noise), which results in a large loss in utility. This paper presents a new approach to evaluate the privacy of machine learning models against speci…

Causal blind spots when using prediction models for treatment decisions
Nan van Geloven, Ruth H Keogh, Wouter van Amsterdam, Giovanni Cin\`a, Jesse H. Krijthe, Niels Peek, Kim Luijken, Sara Magliacane, Pawe{\l} Morzywo{\l}ek, Thijs van Ommen, Hein Putter, Matthew Sperrin, Junfeng Wang, Daniala L. Weir, Vanessa Didelez
https://ar…

Causal blind spots when using prediction models for treatment decisions
Prediction models are increasingly proposed for guiding treatment decisions, but most fail to address the special role of treatments, leading to inappropriate use. This paper highlights the limitations of using standard prediction models for treatment decision support. We identify 'causal blind spots' in three common approaches to handling treatments in prediction modelling and illustrate potential harmful consequences in several medical applications. We advocate for an extension of guidelines …

Optimized Bayesian Framework for Inverse Heat Transfer Problems Using Reduced Order Methods
Kabir Bakhshaei, Umberto Emil Morelli, Giovanni Stabile, Gianluigi Rozza
https://arxiv.org/abs/2402.19381

Optimized Bayesian Framework for Inverse Heat Transfer Problems Using Reduced Order Methods
A stochastic inverse heat transfer problem is formulated to infer the transient heat flux, treated as an unknown Neumann boundary condition. Therefore, an Ensemble-based Simultaneous Input and State Filtering as a Data Assimilation technique is utilized for simultaneous temperature distribution prediction and heat flux estimation. This approach is incorporated with Radial Basis Functions not only to lessen the size of unknown inputs but also to mitigate the computational burden of this techniqu…

All epitaxial self-assembly of vertically-confined silicon color centers using ultra-low temperature epitaxy
Johannes Aberl, Enrique Prado Navarrete, Merve Karaman, Diego Haya Enriquez, Christoph Wilflingseder, Andreas Salomon, Daniel Primetzhofer, Markus Andreas Schubert, Giovanni Capellini, Thomas Fromherz, Peter De\'ak, \'Ad\'am Gali, Moritz Brehm

All epitaxial self-assembly of vertically-confined silicon color centers using ultra-low temperature epitaxy
Silicon-based color centers (SiCCs) have recently emerged as a source of quantum light that could be well combined with existing telecom-based Si Photonics platforms. However, considering the current SiCC fabrication processes, deterministic control over the vertical emitter position is impossible due to the stochastic nature of the ion implantation deployed for color center formation. To bypass this bottleneck towards high-yield integration, we demonstrate an entirely different creation method…

JWST meets Chandra: a large population of Compton thick, feedback-free, and X-ray weak AGN, with a sprinkle of SNe
Roberto Maiolino, Guido Risaliti, Matilde Signorini, Bartolomeo Trefoloni, Ignas Juodzbalis, Jan Scholtz, Hannah Uebler, Francesco D'Eugenio, Stefano Carniani, Andy Fabian, Xihan Ji, Giovanni Mazzolari, Elena Bertola, Marcella Brusa, Andrew J. Bunker, Stephane Charlot, Andrea Comastri, Giovanni Cresci, Christa Noel DeCoursey, Eiichi Egami, Fabrizio Fiore, Roberto Gilli…

JWST meets Chandra: a large population of Compton thick, feedback-free, and X-ray weak AGN, with a sprinkle of SNe
We investigate the X-ray properties of a large sample of 71 broad line and narrow line AGN at 2

Nodal Volumes as Differentiable Functionals of Gaussian fields
Giovanni Peccati, Michele Stecconi
https://arxiv.org/abs/2403.20243 https://

Nodal Volumes as Differentiable Functionals of Gaussian fields
We characterize the absolute continuity of the law and the Malliavin-Sobolev regularity of random nodal volumes associated with smooth Gaussian fields on generic $\mathcal{C}^2$ manifolds with arbitrary dimension. Our results extend and generalize the seminal contribution by Angst and Poly (2020) about stationary fields on Euclidean spaces and cover, in particular, the case of two-dimensional manifolds, possibly with boundary and corners. The main tools exploited in the proofs include the use o…

BOSS Constraints on Massive Particles during Inflation: The Cosmological Collider in Action
Giovanni Cabass, Oliver H. E. Philcox, Mikhail M. Ivanov, Kazuyuki Akitsu, Shi-Fan Chen, Marko Simonovi\'c, Matias Zaldarriaga
https://arxiv.org/abs/2404.01894

BOSS Constraints on Massive Particles during Inflation: The Cosmological Collider in Action
Massive particles leave imprints on primordial non-Gaussianity via couplings to the inflaton, even despite their exponential dilution during inflation: practically, the Universe acts as a Cosmological Collider. We present the first dedicated search for spin-zero particles using BOSS redshift-space galaxy power spectrum and bispectrum multipoles, as well as Planck CMB non-Gaussianity data. We demonstrate that some Cosmological Collider models are well approximated by the standard equilateral and…

Production of dark sector particles via resonant positron annihilation on atomic electrons
Fernando Arias-Arag\'on, Luc Darm\'e, Giovanni Grilli di Cortona, Enrico Nardi
https://arxiv.org/abs/2403.15387

Production of dark sector particles via resonant positron annihilation on atomic electrons
Resonant positron annihilation on atomic electrons provides a powerful method to search for light new particles coupled to $e^+e^-$. Reliable estimates of production rates require a detailed characterization of electron momentum distributions. We describe a general method that harnesses the target material Compton profile to properly include electron velocity effects in resonant annihilation cross-sections. We additionally find that high $Z$ atoms can efficiently act as particle physics acceler…

Minimizing movements for the generalized power mean curvature flow
Giovanni Bellettini, Shokhrukh Yu. Kholmatov
https://arxiv.org/abs/2403.20244 https://…

Minimizing movements for the generalized power mean curvature flow
Motivated by a conjecture of De Giorgi, we consider the Almgren-Taylor-Wang scheme for mean curvature flow, where the volume penalization is replaced by a term of the form \[ \int_{EΔF} f\Big(\frac{ {\rm d}_F }τ\Big)~dx \] for $f$ ranging in a large class of strictly increasing continuous functions. In particular, our analysis covers the case \[ f(r) = r^α, \qquad r \geq 0, \quad α>0, \] considered by De Giorgi. We show that the generalized minimizing movement scheme converges to the geomet…

🔊 #NowPlaying on BBCRadio3's #ThroughTheNight
Il giardino armonico, Dario Castello & Giovanni Antonini:
🎵 Sonata IV, for 2 violins and continuo
#Ilgiardinoarmonico #DarioCastello #GiovanniAntonini

Closed-Form Bounds for DP-SGD against Record-level Inference
Giovanni Cherubin, Boris K\"opf, Andrew Paverd, Shruti Tople, Lukas Wutschitz, Santiago Zanella-B\'eguelin
https://arxiv.org/abs/2402.14397

Closed-Form Bounds for DP-SGD against Record-level Inference
Machine learning models trained with differentially-private (DP) algorithms such as DP-SGD enjoy resilience against a wide range of privacy attacks. Although it is possible to derive bounds for some attacks based solely on an $(\varepsilon,δ)$-DP guarantee, meaningful bounds require a small enough privacy budget (i.e., injecting a large amount of noise), which results in a large loss in utility. This paper presents a new approach to evaluate the privacy of machine learning models against speci…

An analysis of the effects of sharing research data, code, and preprints on citations
Giovanni Colavizza, Lauren Cadwallader, Marcel LaFlamme, Gr\'egory Dozot, St\'ephane Lecorney, Daniel Rappo, Iain Hrynaszkiewicz
https://arxiv.org/abs/2404.16171

An analysis of the effects of sharing research data, code, and preprints on citations
Calls to make scientific research more open have gained traction with a range of societal stakeholders. Open Science practices include but are not limited to the early sharing of results via preprints and openly sharing outputs such as data and code to make research more reproducible and extensible. Existing evidence shows that adopting Open Science practices has effects in several domains. In this study, we investigate whether adopting one or more Open Science practices leads to significantly …

Magnetic field expulsion in optically driven YBa$_2$Cu$_3$O$_{6.48}$
Sebastian Fava, Giovanni De Vecchi, Gregor Jotzu, Michele Buzzi, Thomas Gebert, Yiran Liu, Bernhard Keimer, Andrea Cavalleri
https://arxiv.org/abs/2405.00848

Magnetic field expulsion in optically driven YBa$_2$Cu$_3$O$_{6.48}$
Coherent optical driving in quantum solids is emerging as a new research frontier, with many demonstrations of exotic non-equilibrium quantum phases. These are based on engineered band structures, and on stimulated nonlinear interactions between driven modes. Enhanced functionalities like ferroelectricity, magnetism and superconductivity have been reported in these non-equilibrium settings. In high-Tc cuprates, coherent driving of certain phonon modes induces a transient state with superconduct…

Adjusting for Ascertainment Bias in Meta-Analysis of Penetrance for Cancer Risk
Thanthirige Lakshika M. Ruberu, Danielle Braun, Giovanni Parmigiani, Swati Biswas
https://arxiv.org/abs/2402.15030

Adjusting for Ascertainment Bias in Meta-Analysis of Penetrance for Cancer Risk
Multi-gene panel testing allows efficient detection of pathogenic variants in cancer susceptibility genes including moderate-risk genes such as ATM and PALB2. A growing number of studies examine the risk of breast cancer (BC) conferred by pathogenic variants of such genes. A meta-analysis combining the reported risk estimates can provide an overall age-specific risk of developing BC, i.e., penetrance for a gene. However, estimates reported by case-control studies often suffer from ascertainment…

🔊 #NowPlaying on BBCRadio3's #ThroughTheNight
Paolo Rizzi, Gordon Murray, Il giardino armonico, Antonio Vivaldi, Giovanni Antonini, Giovanni Antonini, Enrico Onofri, Marco Bianchi, Duilio Galfetti, Paolo Beschi, Luca Pianca & Duilio Galfetti:
🎵 Concerto in C major, RV 444

Relaxation of first-class constraints and the quantization of gauge theories: from "matter without matter" to the reappearance of time in quantum gravity
Roberto Casadio, Leonardo Chataignier, Alexander Yu. Kamenshchik, Francisco G. Pedro, Alessandro Tronconi, Giovanni Venturi
https://arxiv.org/abs/2402.12437

Relaxation of first-class constraints and the quantization of gauge theories: from "matter without matter" to the reappearance of time in quantum gravity
We make a conceptual overview of a particular approach to the initial-value problem in canonical gauge theories. We stress how the first-class phase-space constraints may be relaxed if we interpret them as fixing the values of new degrees of freedom. This idea goes back to Fock and Stueckelberg, leading to restrictions of the gauge symmetry of a theory, and it corresponds, in certain cases, to promoting constants of Nature to physical fields. Recently, different versions of this formulation hav…

🔊 #NowPlaying on BBCRadio3's #Breakfast
Giovanni Benedetto Platti, Abel Selaocoe, Elizabeth Kenny, Fred Thomas & Kadialy Kouyate:
🎵 Cello Sonata No. 7 in D Major, I. 84: IV. Presto
#GiovanniBenedettoPlatti #FredThomas
https://open.spotify.com/track/6TENfnmhU1L8sRgmLai0DM

A note on nonlinear critical problems involving the Grushin Subelliptic Operator: bifurcation and multiplicity results
Giovanni Molica Bisci, Paolo Malanchini, Simone Secchi
https://arxiv.org/abs/2402.17476

A note on nonlinear critical problems involving the Grushin Subelliptic Operator: bifurcation and multiplicity results
We consider the boundary value problem $$ \cases{ -Δ_γu = λu + \left\vert u \right\vert^{2^*_γ-2}u &in $Ω$\cr u = 0 &on $\partialΩ$,\cr } $$ where $Ω$ is an open bounded domain in $\mathbb{R}^N$, $N \geq 3$, while $Δ_γ$ is the Grushin operator $$ Δ_ γu(z) = Δ_x u(z) + \vert x \vert^{2γ} Δ_y u (z) \quad (γ\ge 0). $$ We prove a multiplicity and bifurcation result for this problem, extending the results of Cerami, Fortunato and Struwe and of Fiscella, Molica Bisci and Servadei.

Magnetic field expulsion in optically driven YBa$_2$Cu$_3$O$_{6.48}$
Sebastian Fava, Giovanni De Vecchi, Gregor Jotzu, Michele Buzzi, Thomas Gebert, Yiran Liu, Bernhard Keimer, Andrea Cavalleri
https://arxiv.org/abs/2405.00848

Magnetic field expulsion in optically driven YBa$_2$Cu$_3$O$_{6.48}$
Coherent optical driving in quantum solids is emerging as a new research frontier, with many demonstrations of exotic non-equilibrium quantum phases. These are based on engineered band structures, and on stimulated nonlinear interactions between driven modes. Enhanced functionalities like ferroelectricity, magnetism and superconductivity have been reported in these non-equilibrium settings. In high-Tc cuprates, coherent driving of certain phonon modes induces a transient state with superconduct…

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Giovanni Benedetto Platti, Abel Selaocoe, Elizabeth Kenny, Fred Thomas & Kadialy Kouyate:
🎵 Cello Sonata No. 7 in D Major, I. 84: IV. Presto
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https://open.spotify.com/track/6TENfnmhU1L8sRgmLai0DM

Symmetries of the Large Scale Structures of the Universe as a Phenomenology of a Fractal Turbulence: The Role of the Plasma Component
Giovanni Montani, Nakia Carlevaro
https://arxiv.org/abs/2403.18759

Symmetries of the Large Scale Structures of the Universe as a Phenomenology of a Fractal Turbulence: The Role of the Plasma Component
We present a new perspective on the symmetries that govern the formation of large-scale structures across the Universe, particularly focusing on the transition from the seeds of galaxy clusters to the seeds of galaxies themselves. We address two main features of cosmological fluid dynamics pertaining to both the linear and non-linear regimes. The linear dynamics of cosmological perturbations within the Hubble horizon is characterized by the Jeans length, which separates stable configurations fr…

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Giovanni Gabrieli, Gabrieli Players & Paul McCreesh:
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Giovanni Gabrieli, Gabrieli Players & Paul McCreesh:
🎵 Canzon a 10 [1597 no.9]
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Alessandro Scarlatti, Giovanni Antonini, Il Giardino Armonico & Giovanni Antonini:
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Giovanni Pierluigi da Palestrina, Yale Schola Cantorum & David Hill:
🎵 Agnus Dei (Missa Confitebor tibi Domine)
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Giovanni Picchi, Cardinal Complex & Jonas Gassmann:
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