Tootfinder

The Spurious Factor Dilemma: Robust Inference in Heavy-Tailed Elliptical Factor Models
Jiang Hu, Jiahui Xie, Yangchun Zhang, Wang Zhou
https://arxiv.org/abs/2506.05116

The Spurious Factor Dilemma: Robust Inference in Heavy-Tailed Elliptical Factor Models
Factor models are essential tools for analyzing high-dimensional data, particularly in economics and finance. However, standard methods for determining the number of factors often overestimate the true number when data exhibit heavy-tailed randomness, misinterpreting noise-induced outliers as genuine factors. This paper addresses this challenge within the framework of Elliptical Factor Models (EFM), which accommodate both heavy tails and potential non-linear dependencies common in real-world da…

A good counter-explanation from @…, although it’s not entirely consistent with the data: if this were merely aging vehicles, we’d expect to see a slow, steady decline. But we don’t; we see a •very• sharp turnaround that coincides precisely with Musk’s fascism entering full public view, and not with any sort of sudden aging event in the vehicles.
But yes, surely normal depreciation is a contributing factor as well.
https://mstdn.ca/@alessandro/114637425697204963

Music-induced cognitive change and whole-brain network flexibility: a pilot study https://www.frontiersin.org/journals/neuroscience/articles/10.3389/fnins.2025.1567605/full Now what might visual-to-auditory sensory substitution train…

Frontiers | Music-induced cognitive change and whole-brain network flexibility: a pilot study
IntroductionCognitive impairment that exceeds age-related cognitive decline is a risk factor for Alzheimer’s disease and related dementias. As the older adul...

This https://arxiv.org/abs/2505.22813 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_csLG_…

X-Factor: Quality Is a Dataset-Intrinsic Property
In the universal quest to optimize machine-learning classifiers, three factors -- model architecture, dataset size, and class balance -- have been shown to influence test-time performance but do not fully account for it. Previously, evidence was presented for an additional factor that can be referred to as dataset quality, but it was unclear whether this was actually a joint property of the dataset and the model architecture, or an intrinsic property of the dataset itself. If quality is truly d…

Meta reveals more information about its research glasses Aria Gen 2, including their form factor, computer vision cameras, sensors, and on-device compute (Emma Roth/The Verge)
https://www.theverge.com/news/679707/meta-aria-gen-2-upgrades-specs-ai

Here’s what’s inside Meta’s experimental new smart glasses
Meta has revealed the technical details about Aria Gen 2, the latest version of its experimental smart glasses designed for researchers.

This https://arxiv.org/abs/2307.08780 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_csLO_…

Discounted-Sum Automata with Multiple Discount Factors
Discounting the influence of future events is a key paradigm in economics and it is widely used in computer-science models, such as games, Markov decision processes (MDPs), reinforcement learning, and automata. While a single game or MDP may allow for several different discount factors, nondeterministic discounted-sum automata (NDAs) were only studied with respect to a single discount factor. It is known that every class of NDAs with an integer as the discount factor has good computational prop…

Für die breite Verwendung von #KI, speziell im Kontext #Schule, muss sichergestellt sein, dass #LLMs user:innen nicht zu selbstgefährdendem Verhalten animieren.
Das Nonprofit Transluce arbeitet an verschie…

Surfacing Pathological Behaviors in Language Models
We train reinforcement learning (RL) agents to craft realistic natural-language prompts that elicit specified behaviors in frontier open-weight models (Llama 3.1/4, Qwen 2.5, and DeepSeek-V3), using a proposed variational lower bound to guide the search.

Now that most services have implemented 2FA (multi-factor authentication) we are seeing a new breed of scams that exploit them and trick people into approving requests under the guise of fraud prevention, which is easy to do now that we are bombarded by more secure logins. The next time you get a fraud prevention alert, be quadruple vigilant about how you respond to 2FA requests.

FPGA people: how cursed is it if I scramble TX/RX lanes of my transceivers so that e.g. TX lane 0 and RX lane 1 go to a single SFP28?
They're separate clock domains anyway, separate PLL taps. I'm not using the CPLL so that's no factor.
It feels wrong, but I can't think of any reason why it would be? (I've done this before and it worked fine but that was with hacky breakout to SMA setups, not by design on a PCB)

Study of Complexity Factor and Stability of Dynamical Systems in $f(G)$ Gravity
M. Zeeshan Gul, W. Ahmad, M. M. M. Nasir, Faisal Javed, Orhan Donmez, Bander Almutairi
https://arxiv.org/abs/2506.03559

Study of Complexity Factor and Stability of Dynamical Systems in $f(G)$ Gravity
In this paper, we evaluate the complexity of the non-static cylindrical geometry with anisotropic matter configuration in the framework of modified Gauss-Bonnet theory. In this perspective, we calculate modified field equations, the C energy formula, and the mass function that helps to understand the astrophysical structures in this modified gravity. Furthermore, we use the Weyl tensor and obtain different structure scalars by orthogonally splitting the Riemann tensor. One of these scalars, $YT…

This https://arxiv.org/abs/2505.23455 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_hepp…

Pion Phenomenology from the Thermal Soft-Wall Model of Holographic QCD
This work investigates the temperature dependence of the electromagnetic form factor of the pion, its generalized parton distribution $H_π(T)$, effective mass $m_π(T)$, radius $r_π(T)$, electromagnetic charge density $ρ_π(b, T)$, pion-nucleon coupling constant $g_{πNN}(T)$ and the pion-$Δ$ coupling $g_{πΔΔ}(T)$ within the thermal soft-wall model of AdS/QCD. The thermal pion form factor is extrapolated from the zero-temperature case, and based on this, the generalized parton distributi…

Super Bowl rematch, tush-push tussle among top 10 revenge games for 2025 https://www.foxsports.com/stories/nfl/top-10-revenge-games-2025-chiefs-eagles-super-bowl-rematch-tush-push

This https://arxiv.org/abs/2406.07575 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_mat…

On the largest prime factor of quadratic polynomials
Let $x$ denote a sufficiently large integer. We show that the recent result of Grimmelt and Merikoski actually yields the largest prime factor of $n^2 +1$ is greater than $x^{1.317}$ infinitely often. As an application, we give a new upper bound for the number of integers $n \leqslant x$ which $n^2 +1$ has a primitive divisor.

Why LLM Safety Guardrails Collapse After Fine-tuning: A Similarity Analysis Between Alignment and Fine-tuning Datasets
Lei Hsiung, Tianyu Pang, Yung-Chen Tang, Linyue Song, Tsung-Yi Ho, Pin-Yu Chen, Yaoqing Yang
https://arxiv.org/abs/2506.05346

Why LLM Safety Guardrails Collapse After Fine-tuning: A Similarity Analysis Between Alignment and Fine-tuning Datasets
Recent advancements in large language models (LLMs) have underscored their vulnerability to safety alignment jailbreaks, particularly when subjected to downstream fine-tuning. However, existing mitigation strategies primarily focus on reactively addressing jailbreak incidents after safety guardrails have been compromised, removing harmful gradients during fine-tuning, or continuously reinforcing safety alignment throughout fine-tuning. As such, they tend to overlook a critical upstream factor: …

@…
"2FA Liberapay does not yet support two-factor authentication."
When!? 🤦
#LiberaPay #Privacy

This https://arxiv.org/abs/2502.05210 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_qfi…

Regression and Forecasting of U.S. Stock Returns Based on LSTM
This paper analyses the investment returns of three stock sectors, Manuf, Hitec, and Other, in the U.S. stock market, based on the Fama-French three-factor model, the Carhart four-factor model, and the Fama-French five-factor model, in order to test the validity of the Fama-French three-factor model, the Carhart four-factor model, and the Fama-French five-factor model for the three sectors of the market. French five-factor model for the three sectors of the market. Also, the LSTM model is used …

ecoli_transcription: E. coli transcription network (2002)
Network of operons and their pairwise interactions, via transcription factor-based regulation, within the bacteria Escherichia coli.
This network has 423 nodes and 578 edges.
Tags: Biological, Gene regulation, Unweighted
https://networks.s…

Iterative Neural Rollback Chase-Pyndiah Decoding
Dmitry Artemasov, Oleg Nesterenkov, Kirill Andreev, Pavel Rybin, Alexey Frolov
https://arxiv.org/abs/2506.04839

Iterative Neural Rollback Chase-Pyndiah Decoding
Iterative decoding is essential in modern communication systems, especially optical communications, where error-correcting codes such as turbo product codes (TPC) and staircase codes are widely employed. A key factor in achieving high error correction performance is the use of soft-decision decoding for component codes. However, implementing optimal maximum a posteriori (MAP) probability decoding for commonly used component codes, such as BCH and Polar codes, is computationally prohibitive. Ins…

„This loss of income cannot be explained by women's career paths or their exit from the workforce. Nor can it be explained by the very real constraints imposed by the birth of a child.
Not only do heterosexual men not experience any loss of income related to the birth of a child, which might be explained by mothers still being primarily responsible for childcare, but the same is true for both fathers in a same-sex couple.“
Menopause leads to an av. 10% loss in income

This https://arxiv.org/abs/2412.15168 has been replaced.
initial toot: https://mastoxiv.page/@arX…

Dynamic structure factor of a spin-1/2 Heisenberg chain with long-range interactions
We study the dynamic structure factor $S(k,ω)$ of the spin-1/2 chain with long-range, power-law decaying unfrustrated (sign alternating) Heisenberg interactions $J_r \sim (-1)^{r-1} r^{-α}$ by means of stochastic analytic continuation (SAC) of imaginary-time correlations computed by quantum Monte Carlo calculations. We do so in both the long-range antiferromagnetic (AFM, for $α\lesssim 2.23$) and quasi-long-range-ordered (QLRO, for $α\gtrsim 2.23$) ground-state phases, employing diffe…

Mathematics A Missing Factor in Assessing the Antiquity of Vedanga Jyotisa
Jaidev Dasgupta
https://arxiv.org/abs/2506.02216 https://a…

Mathematics A Missing Factor in Assessing the Antiquity of Vedanga Jyotisa
While reading ancient texts one has to be cognizant of the assumptions made about the past. One has to ask: Are these assumptions valid? Are we projecting the present views into the past? A case in point is the dating of Vedanga Jyotisa. This note reports that due to mathematics being overlooked in the various attempts of assessing the time of composition of the text, the latter was dated much before the period when its mathematics was actually feasible.

This https://arxiv.org/abs/2503.02753 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_…

An SS433 flare caught by TESS. Fast rise times and evidence for a 13 hours quasi-period
SS433 is an exotic Galactic microquasar in which there is a supercritical inflow of matter into a compact object of likely black hole nature. Here we report on an SS433 flare that occurred during a TESS observation of Sector 54 in June of 2022. The flare lasted for about 10 days and culminated in a flux increase by a factor of three relative to quiescence. The unprecedented continuous photometric coverage of the flare afforded by TESS shows that the flux can rise and fall by up to a factor of t…

This https://arxiv.org/abs/2102.08600 has been replaced.
link: https://scholar.google.com/scholar?q=a

A new characterization of the convergence factor of two-level methods
Multilevel methods are among the most efficient numerical methods for solving large-scale systems of equations that arise from discretized partial differential equations. Two-level convergence theory plays a fundamental role in the analysis and design of multilevel methods. In this paper, we present a concise and easy-to-use identity for characterizing the convergence factor of two-level methods, whose hierarchical spaces can be either overlapping or non-overlapping. In order to illustrate its …

Last week, billionaire and onetime unofficial co-president Elon Musk ended his tenure as a special government employee after four months of spreading chaos, misery, and death throughout the federal government and world.
Much reporting has attributed his departure to philosophical differences with Trump.
Musk has criticized various Trump policies,
most recently the House GOP spending bill for adding trillions to the federal deficit.
But a crucial factor in Musk’s dep…

Tesla Takedown takes down Musk
Protest works.

Nearly-Linear Time Private Hypothesis Selection with the Optimal Approximation Factor
Maryam Aliakbarpour, Zhan Shi, Ria Stevens, Vincent X. Wang
https://arxiv.org/abs/2506.01162 …

Nearly-Linear Time Private Hypothesis Selection with the Optimal Approximation Factor
Estimating the density of a distribution from its samples is a fundamental problem in statistics. Hypothesis selection addresses the setting where, in addition to a sample set, we are given $n$ candidate distributions -- referred to as hypotheses -- and the goal is to determine which one best describes the underlying data distribution. This problem is known to be solvable very efficiently, requiring roughly $O(\log n)$ samples and running in $\tilde{O}(n)$ time. The quality of the output is mea…

Savage-Dickey density ratio estimation with normalizing flows for Bayesian model comparison
Kiyam Lin, Alicja Polanska, Davide Piras, Alessio Spurio Mancini, Jason D. McEwen
https://arxiv.org/abs/2506.04339

Savage-Dickey density ratio estimation with normalizing flows for Bayesian model comparison
A core motivation of science is to evaluate which scientific model best explains observed data. Bayesian model comparison provides a principled statistical approach to comparing scientific models and has found widespread application within cosmology and astrophysics. Calculating the Bayesian evidence is computationally challenging, especially as we continue to explore increasingly more complex models. The Savage-Dickey density ratio (SDDR) provides a method to calculate the Bayes factor (eviden…

This https://arxiv.org/abs/2504.17959 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_csRO_…

CIVIL: Causal and Intuitive Visual Imitation Learning
Today's robots learn new tasks by imitating human examples. However, this standard approach to visual imitation learning is fundamentally limited: the robot observes what the human does, but not why the human chooses those behaviors. Without understanding the features that factor into the human's decisions, robot learners often misinterpret the data and fail to perform the task when the environment changes. We therefore propose a shift in perspective: instead of asking human teachers just to sh…

ProjMC$^2$: Scalable and Stable Posterior Inference for Bayesian Spatial Factor Models with Application to Spatial Transcriptomics
Lu Zhang
https://arxiv.org/abs/2506.01098

ProjMC$^2$: Scalable and Stable Posterior Inference for Bayesian Spatial Factor Models with Application to Spatial Transcriptomics
Factor models exhibit a fundamental tradeoff among flexibility, identifiability, and computational efficiency. Bayesian spatial factor models, in particular, face pronounced identifiability concerns and scaling difficulties. To mitigate these issues and enhance posterior inference reliability, this work proposes Projected Markov Chain Monte Carlo (ProjMC$^2$), a novel Markov Chain Monte Carlo (MCMC) sampling algorithm employing projection techniques and conditional conjugacy. ProjMC$^2$ is show…

Now that most services have implemented 2FA (multi-factor authentication) we are seeing a new breed of scams that exploit them and trick people into approving requests under the guise of fraud prevention, which is easy to do now that we are bombarded by more secure logins. The next time you get a fraud prevention alert, be quadruple vigilant about how you respond to 2FA requests.

Low noise flux estimate and data quality control monitoring in EUCLID-NISP cosmological survey
B. Kubik, R. Barbier, P. Calabria, A. Castera, E. Chabanat, F. Charlieu, J-C. Clemens, A. Ealet, S. Ferriol, W. Gillard, T. Maciaszek, E. Prieto, F. Schirra, A. Secroun, B. Serra, G. Smadja, A. Tilquin, J. Zoubianb
https://arxiv.org/ab…

Low noise flux estimate and data quality control monitoring in EUCLID-NISP cosmological survey
Euclid mission is designed to understand the dark sector of the universe. Precise redshift measurements are provided by H2RG detectors. We propose an unbiased method of fitting the flux with Poisson distributed and correlated data, which has an analytic solution and provides a reliable quality factor - fundamental features to ensure the goals of the mission. We compare our method to other techniques of signal estimation and illustrate the anomaly detection on the flight like detectors. Although…

Characterization of the Hamamatsu R12699-406-M4 Photomultiplier Tube in Cold Xenon Environments
M. Adrover, L. Baudis, A. Bismark, A. P. Colijn, J. J. Cuenca-Garc\'ia, M. P. Decowski, M. Flierman, T. den Hollander
https://arxiv.org/abs/2506.04844

Characterization of the Hamamatsu R12699-406-M4 Photomultiplier Tube in Cold Xenon Environments
The Hamamatsu R12699-406-M2 is a $2\times2$ multi-anode 2-inch photomultiplier tube that offers a compact form factor, low intrinsic radioactivity, and high photocathode coverage. These characteristics make it a promising candidate for next-generation xenon-based direct detection dark matter experiments, such as XLZD and PandaX-xT. We present a detailed characterization of this photosensor operated in cold xenon environments, focusing on its single photoelectron response, dark count rate, light…

Finitary codings and stochastic domination for Poisson representable processes
Yinon Spinka
https://arxiv.org/abs/2506.04797 https://…

Finitary codings and stochastic domination for Poisson representable processes
Construct a random set by independently selecting each finite subset of the integers with some probability depending on the set up to translations and taking the union of the selected sets. We show that when the only sets selected with positive probability are pairs, such a random set is a finitary factor of an IID process, answering a question of Forsström, Gantert and Steif. More generally, we show that this is the case whenever the distribution induced by the size of the selected sets has s…

On the Phase-Magnitude Relation in Gravitational Lensing: Reformulation and Applications of the Kramers-Kronig relation
Teruaki Suyama, Shasvath J. Kapadia
https://arxiv.org/abs/2506.02430

On the Phase-Magnitude Relation in Gravitational Lensing: Reformulation and Applications of the Kramers-Kronig relation
It is known that the amplification factor, defined as the ratio of the lensed to the unlensed waveform in the frequency domain, satisfies the Kramers-Kronig (KK) relation, which connects the real and imaginary parts of the amplification factor for any lensing signal. In this work, we reformulate the KK relation in terms of the magnitude and phase of the amplification factor. Unlike the original formulation, the phase cannot be uniquely determined from the magnitude alone due to the possible pre…

Deterministic Optimisation of Jastrow Factors
Maria-Andreea Filip, Evelin M. C. Christlmaier, J. Philip Haupt, Daniel Kats, Pablo L\'opez R\'ios, Ali Alavi
https://arxiv.org/abs/2506.04895

Deterministic Optimisation of Jastrow Factors
Highly flexible Jastrow factors have found significant use in stochastic electronic structure methods such as variational Monte Carlo (VMC) and diffusion Monte Carlo, as well as in quantum chemical transcorrelated (TC) approaches, which have recently seen great success in generating highly accurate electronic energies using moderately sized basis sets. In particular for the latter, the intrinsic noise in the Jastrow factor due to its optimisation by VMC can pose a problem, especially when targe…

Antenna Q-Factor Topology Optimization with Auxiliary Edge Resistivities
Stepan Bosak, Miloslav Capek, Jiri Matas
https://arxiv.org/abs/2506.00595 https://…

Antenna Q-Factor Topology Optimization with Auxiliary Edge Resistivities
This paper presents a novel bi-level topology optimization strategy within the method-of-moments paradigm. The proposed approach utilizes an auxiliary variables called edge resistivities related to the Rao-Wilton-Glisson method-of-moments basis functions, for a definition of a fast local optimization algorithm. The local algorithm combines automatic differentiation with adaptive gradient descent. A Bayesian optimization scheme is applied on top of the local algorithm to search for an optimum po…

Constant-Factor Algorithms for Revenue Management with Consecutive Stays
Ming Hu, Tongwen Wu
https://arxiv.org/abs/2506.00909 https://

Constant-Factor Algorithms for Revenue Management with Consecutive Stays
We study network revenue management problems motivated by applications such as railway ticket sales and hotel room bookings. Request types that require a resource for consecutive stays sequentially arrive with known arrival probabilities. We investigate two scenarios: the reject-or-accept scenario, where the request can be fulfilled by any available resource, and the choice-based scenario, which generalizes the former by incorporating customer preferences through basic attraction models. We dev…

Why does #DOAJ have abstracts for articles which are closed access (nonfreely licensed and paywalled)?
https://doaj.org/article/13b03a41fdac43c0b6772f0d7be22ccb (doi:10.101…

Brain-derived neurotrophic factor in mood disorders and antidepressant treatments – DOAJ
Levels of brain-derived neurotrophic factor (BDNF) are reduced in the brain and serum of depressed patients and at least the reduction in serum levels is...

This https://arxiv.org/abs/2505.24082 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_…

Collimation of Fast Radio Burster 20201124A; Repeaters vs. Apparent Non-Repeaters
The recent report of a period in the active repeating Fast Radio Burster 20201124A and measurement of its spindown rate place bounds on the solid angle of its emission on the basis of energetics. The bound depends on the (unknown) efficiency of conversion of rotational energy to coherent radio emission and implies a lower bound on the Lorentz factor of the radiating charges. Bursts may be emitted along the magnetic dipole axis, in repeaters aligned with the rotational axis and the line of sight…

Tensor Renormalization Group Meets Computer Assistance
Nikolay Ebel, Tom Kennedy, Slava Rychkov
https://arxiv.org/abs/2506.03247 https://

Tensor Renormalization Group Meets Computer Assistance
Tensor renormalization group, originally devised as a numerical technique, is emerging as a rigorous analytical framework for studying lattice models in statistical physics. Here we introduce a new renormalization map - the 2x1 map - which coarse-grains the lattice anisotropically by a factor of two in one direction followed by a 90-degree rotation. We develop a novel graphical language that translates the action of the 2x1 map into a system of inequalities on tensor components, with rigorous e…

Will Michael Mayer Be a Factor for Raiders' Offense? https://www.si.com/nfl/raiders/michael-mayer-las-vegas-brock-bowers-georgia-chip-kelly

This https://arxiv.org/abs/2210.17371 has been replaced.
link: https://scholar.google.com/scholar?q=a

Partitioning a tournament into sub-tournaments of high connectivity
We prove that there exists a constant $c > 0$ such that the vertices of every strongly $c \cdot kt$-connected tournament can be partitioned into $t$ parts, each of which induces a strongly $k$-connected tournament. This is clearly tight up to a constant factor, and it confirms a conjecture of Kühn, Osthus and Townsend (2016).

Beyond water limitation in vegetation-autotoxicity patterning: a cross-diffusion model
Francesco Giannino, Annalisa Iuorio, Cinzia Soresina
https://arxiv.org/abs/2506.03981

Beyond water limitation in vegetation-autotoxicity patterning: a cross-diffusion model
Many mathematical models describing vegetation patterns are based on biomass--water interactions, due to the impact of this limited resource in arid and semi-arid environments. However, in recent years, a novel biological factor called autotoxicity has proved to play a key role in vegetation spatiotemporal dynamics, particularly by inhibiting biomass growth and increasing its natural mortality rate. In a standard reaction-diffusion framework, biomass-toxicity dynamics alone are unable to suppor…

Sources: Meta is prioritizing an ultralight Horizon OS headset with a compute puck, instead of a traditional Quest 4, to ship in 2026 (David Heaney/UploadVR)
https://www.uploadvr.com/meta-prioritizing-puffin-for-2026-pushing-out-quest-4-to-2…

Meta Prioritizing Ultra-Light Headset With Puck Over Traditional Quest 4
Meta is prioritizing shipping an ultralight Horizon OS headset with a tethered compute puck in 2026, and might not ship a new traditional form factor Quest until 2027.

Online Bayesian system identification in multivariate autoregressive models via message passing
T. N. Nisslbeck, Wouter M. Kouw
https://arxiv.org/abs/2506.02710

Online Bayesian system identification in multivariate autoregressive models via message passing
We propose a recursive Bayesian estimation procedure for multivariate autoregressive models with exogenous inputs based on message passing in a factor graph. Unlike recursive least-squares, our method produces full posterior distributions for both the autoregressive coefficients and noise precision. The uncertainties regarding these estimates propagate into the uncertainties on predictions for future system outputs, and support online model evidence calculations. We demonstrate convergence empi…

Weekend #Plankton Factoid 🦠🦐
Light is an extremely important factor in the oceans. It governs not only photosynthesis, but is also an important cue for vertically migrating zooplankton and needed for visual predation. The finding that 20% of the #oceans, especially at vital polar regions, are incre…

Fun post: Dave Farquhar, History of #overclocking
#Celeron:
> In 1998, Intel released the Celeron to compete with cheap CPUs from AMD and Cyrix. To make it, they took all of the Level 2 cache off a Pentium II, clocked it at 266 or 300 MHz, and sold it at an AMD-like price. But due to the lack of L2 cache, it was slower than a previous-generation Pentium running at 233 MHz, let alone an AMD or Cyrix chip running at 266 or 300 MHz.
>
> But the L2 cache was the Pentium II’s limiting factor in overclocking. So a 266 MHz Celeron ran happily at 400 MHz, or potentially even 450 MHz, the same speed as the fastest Pentium II at the time. It was slower than a Pentium II at the same speed, but it worked well for 3D gaming.
>
> But the only people who bought those Celerons were overclockers and people who didn’t know anything about computers. […]

Today's solar activity - #Sun

This https://arxiv.org/abs/2504.05003 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_nuc…

The role of the screening potential in the deuteron-deuteron thermonuclear reaction rates
The deuteron-deuteron (D-D) thermonuclear reaction rates in metallic environments (considering the electron screening effects) is calculated using the S-factor functions which were obtained by fitting to low-energy data on D-D reactions. For this purpose, a fitted S-factor model based on the NACRE compilation is employed. This limited the energy range of Big Bang nucleosynthesis (BBN) for the $ ^{2}\textrm{H}\left(d,p\right) ^{3}\textrm{H}$ and $^{2} \textrm{H} \left(d,n\right) ^{3}\t…

This https://arxiv.org/abs/2505.03264 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_hepp…

Study of Heavy Hadron Production in Au + Au Collisions at a Center-of-Mass Energy of $\sqrt{s_{NN}}=200$ GeV
Using the Monte Carlo HYDJET++ model, the transverse momentum ($p_{T}$) spectra of heavy hadrons ($D^{0}$, $\overline{D}^{0}$, $D^{+}$, $D^{-}$ and $Λ_{c}$), as well as the nuclear modification factors of $D^{0}$ and $D^{\pm}$, produced in Au + Au collisions at $\sqrt{s_{NN}} = 200$ GeV RHIC energy across various centrality bins, are presented. This study is motivated by the need to understand the centrality dependence of the charm enhancement factor ($γ_{c}$) and the roles of different hadro…

This https://arxiv.org/abs/2406.05769 has been replaced.
initial toot: https://mastoxiv.page/@a…

Integrative Mobility Model For Grain-Boundary-Limited Transport In Thermoelectric Compounds
Grain-boundary-limited charge transport remains a key bottleneck in polycrystalline thermoelectric materials, where reduced carrier mobility degrades electrical conductivity and suppresses the power factor. Here we present a semi-empirical mobility model that integrates three dominant grain-boundary mechanisms: (i) weighted mobility linked to carrier effective mass and concentration, (ii) thermionic emission across grain-boundary barriers, and (iii) geometric suppression arising from a finite m…

This https://arxiv.org/abs/2505.20089 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_csSI_…

Homophily Enhanced Graph Domain Adaptation
Graph Domain Adaptation (GDA) transfers knowledge from labeled source graphs to unlabeled target graphs, addressing the challenge of label scarcity. In this paper, we highlight the significance of graph homophily, a pivotal factor for graph domain alignment, which, however, has long been overlooked in existing approaches. Specifically, our analysis first reveals that homophily discrepancies exist in benchmarks. Moreover, we also show that homophily discrepancies degrade GDA performance from bot…

An atom in front of Lorentz violating Kalb-Ramond black hole background
Anisur Rahaman
https://arxiv.org/abs/2506.01006 https://arxiv…

An atom in front of Lorentz violating Kalb-Ramond black hole background
We investigate the role of Lorentz violation in the acceleration radiation produced when an atom falls into a Kalb-Ramond (KR) black hole and observe that the amplitude and an exponential (Planck-like) factor are both shaped by the Lorentz-violating parameter, indicating a breach of the equivalence principle and resembling characteristics observed in bumblebee gravity models. We further investigate how Lorentz violation and conformal symmetry work together to determine the thermodyn…

This https://arxiv.org/abs/2505.00493 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_mat…

On the greatest prime factor and uniform equidistribution of quadratic polynomials
We show that the greatest prime factor of $n^2+h$ is at least $n^{1.312}$ infinitely often. This gives an unconditional proof for the range previously known under the Selberg eigenvalue conjecture. Furthermore, we get uniformity in $h \leq n^{1+o(1)}$ under a natural hypothesis on real characters. The same uniformity is obtained for the equidistribution of the roots of quadratic congruences modulo primes. We also prove a variant of the divisor problem for $ax^2+by^3$, which was used by the seco…

This https://arxiv.org/abs/2411.19375 has been replaced.
initial toot: https://mastoxiv.page/@arX…

The Co-evolution of Cooperation and Epidemic Spreading
People's cooperation in adopting protective measures is effective in epidemic control and creates herd immunity as a public good. Similarly, the presence of an epidemic is a driving factor for the formation and improvement of cooperation. Here, we study the coevolution of epidemic dynamics and the public good game as a paradigm of cooperation dynamics. Using simulations and a mean-field description, we show that the presence of an epidemic can promote cooperation even in regimes where cooperati…

Improved Measurements of $D^ \to \eta e^ \nu_e$ and $D^ \to \eta \mu^ \nu_\mu$
BESIII Collaboration, et al.
https://arxiv.org/abs/2506.02521 https://

Improved Measurements of $D^+ \to ηe^+ν_e$ and $D^+ \to ημ^+ν_μ$
Using 20.3 fb$^{-1}$ of $e^+e^-$ collision data collected at the center-of-mass energy of 3.773 GeV with the BESIII detector, we measure the branching fractions of $D^+\to ηe^+ν_e$ and $D^+\to ημ^+ν_μ$ to be $(9.75\pm0.29\pm0.28)\times10^{-4}$ and $(9.08\pm0.35\pm0.23)\times10^{-4}$, where the first and second uncertainties are statistical and systematic, respectively. From a simultaneous fit to their partial decay rates, we determine the product of the hadronic form factor $f^η_+(0)$ an…

Computing Diverse and Nice Triangulations
Waldo G\'alvez, Mayank Goswami, Arturo Merino, GiBeom Park, Meng-Tsung Tsai
https://arxiv.org/abs/2506.01323 …

Computing Diverse and Nice Triangulations
We initiate the study of computing diverse triangulations to a given polygon. Given a simple $n$-gon $P$, an integer $ k \geq 2 $, a quality measure $σ$ on the set of triangulations of $P$ and a factor $ α\geq 1 $, we formulate the Diverse and Nice Triangulations (DNT) problem that asks to compute $k$ \emph{distinct} triangulations $T_1,\dots,T_k$ of $P$ such that a) their diversity, $\sum_{i < j} d(T_i,T_j) $, is as large as possible \emph{and} b) they are nice, i.e., $σ(T_i) \leq ασ^* $ …

#periodicreminder: 
"Banding together is one way of reducing the fear factor."
https://nader.org/2025/03/14/stay-silent-and-stay-pow…

Prenatal phthalate exposures and adiposity outcomes trajectories: a multivariate Bayesian factor regression approach
Phuc H. Nguyen, Stephanie M. Engel, Amy H. Herring
https://arxiv.org/abs/2506.02518

Prenatal phthalate exposures and adiposity outcomes trajectories: a multivariate Bayesian factor regression approach
We aim to assess the longitudinal effects of prenatal exposure to phthalates on the risk of childhood obesity in children aged 4 to 7, with potential time-varying and sex-specific effects. Multiple body-composition-related outcomes, such as BMI z-score, fat mass percentage, and waist circumference, are available in the data. Existing chemical mixture analyses often look at these outcomes individually due to the limited availability of multivariate models for mixture exposures. We propose a mult…

This https://arxiv.org/abs/2505.18468 has been replaced.
initial toot: https://mastoxiv.page/@a…

Generalized many-body exciton g-factors: magnetic hybridization and non-monotonic Rydberg series in monolayer WSe\textsubscript{2}
Magneto-optics of low dimensional semiconductors, such as monolayer transition metal dichalcogenides, offers a vast playground for exploring complex quantum phenomena. However, current \textit{ab initio} approaches fail to capture important experimental observations related to brightening of excitonic levels and their g-factor dependence. Here, we develop a robust and general first principles framework for many-body exciton g-factors by incorporating off-diagonal terms for the spin and orbital …

Geometric Visual Servo Via Optimal Transport
Ethan Canzini, Simon Pope, Ashutosh Tiwari
https://arxiv.org/abs/2506.02768 https://arxi…

Geometric Visual Servo Via Optimal Transport
When developing control laws for robotic systems, the principle factor when examining their performance is choosing inputs that allow smooth tracking to a reference input. In the context of robotic manipulation, this involves translating an object or end-effector from an initial pose to a target pose. Robotic manipulation control laws frequently use vision systems as an error generator to track features and produce control inputs. However, current control algorithms don't take into account the …

ecoli_transcription: E. coli transcription network (2002)
Network of operons and their pairwise interactions, via transcription factor-based regulation, within the bacteria Escherichia coli.
This network has 424 nodes and 577 edges.
Tags: Biological, Gene regulation, Unweighted
https://networks.s…

The form factor of the sticks was never the issue, the problem is that compared to Apple TV the interface is incredibly slow and clunky. Is that resolved?
"Roku Announces New Streaming Sticks, TVs, More"
https://www.thurrott.com/music-videos/3200

Energy Efficiency Analysis of Active RIS-enhanced Wireless Network under Power-Sum Constraint
Jingdie Xin, Yan Wang, Feng Shu, Feng Zhao, Yifan Zhao, Hao Jiang
https://arxiv.org/abs/2506.02823

Energy Efficiency Analysis of Active RIS-enhanced Wireless Network under Power-Sum Constraint
Recently, as a green wireless technology, active reconfigurable intelligent surface (RIS) attracts numerous research activities due to its amplifying ability to combat the double-fading effect compared to passive one. How about its energy efficiency (EE) over passive one? Below, the EE of active RIS-aided wireless network in Rayleigh fading channels is analyzed. Using the law of large numbers, EE is derived as a function of five factors: power allocation factor, the number (N) of RIS elements, …

This https://arxiv.org/abs/2501.00247 has been replaced.
initial toot: https://mastoxiv.page/@arX…

Spectra of Magnetoroton and Chiral Graviton Modes of Fractional Chern Insulator
Employing the state-of-the-art time-dependent variational principle (TDVP) algorithm, we compute the spectra of charge-neutral excitations in the $ν=1/2$ (bosonic) \updated{ and $1/3$ (fermionic) fractional Chern insulator (FCI)} on the Haldane honeycomb lattice model. The magnetoroton visualized from the dynamic density structure factor acquires a minimum gap at finite momentum that can go soft with increasing interaction and give rise to a charge density wave (CDW) at the same wavevector. As…

On the genericity of irreducible subfactors
Yoonkyeong Lee, Brent Nelson
https://arxiv.org/abs/2506.01838 https://arxiv.org/pdf/2506.…

On the genericity of irreducible subfactors
We show that finitely generated irreducible $\mathrm{II}_1$ subfactors are generic in the following sense. Given a separable $\mathrm{II}_1$ factor $M$ and an integer $n\geq 2$, equip the set of $n$-tuples of self-adjoint operators in $M$ with norm at most $1$ with the metric $d(x,y) = \max_{1\leq i \leq n} \|x_i - y_i\|_2$. Then the set of $n$-tuples that generate an irreducible subfactor of $M$ forms a dense $G_δ$ set in this metric space. On the way to proving this result, we show…

The Infrared Phase of QCD and Anderson Localization
Ivan Horv\'ath
https://arxiv.org/abs/2506.04114 https://arxiv.org/pdf/2506.04…

The Infrared Phase of QCD and Anderson Localization
When Anderson localization entered the QCD landscape, it was almost immediately thought about in connection with thermal phases, namely as a factor in the chiral transition. However, recent developments revealed an additional structure that made Anderson-like features central to the genesis of the entirely new thermal phase: the IR phase. I will explain these developments.

Evaluating the Effectiveness of Pre-Trained Audio Embeddings for Classification of Parkinson's Disease Speech Data
Emmy Postma, Cristian Tejedor-Garcia
https://arxiv.org/abs/2506.02078

Evaluating the Effectiveness of Pre-Trained Audio Embeddings for Classification of Parkinson's Disease Speech Data
Speech impairments are prevalent biomarkers for Parkinson's Disease (PD), motivating the development of diagnostic techniques using speech data for clinical applications. Although deep acoustic features have shown promise for PD classification, their effectiveness often varies due to individual speaker differences, a factor that has not been thoroughly explored in the existing literature. This study investigates the effectiveness of three pre-trained audio embeddings (OpenL3, VGGish and Wav2Vec…

Minimizing Ray Tracing Memory Traffic through Quantized Structures and Ray Stream Tracing
Moritz Grauer, Johannes Hanika, Carsten Dachsbacher
https://arxiv.org/abs/2505.24653

Minimizing Ray Tracing Memory Traffic through Quantized Structures and Ray Stream Tracing
Memory bandwidth constraints continue to be a significant limiting factor in ray tracing performance, particularly as scene complexity grows and computational capabilities outpace memory access speeds. This paper presents a memory-efficient ray tracing methodology that integrates compressed data structures with ray stream techniques to reduce memory traffic. The approach implements compressed BVH and triangle representations to minimize acceleration structure size in combination with ray stream…

$g$ Factor of Boron-like Tin
J. Morgner (Max-Planck-Institut f\"ur Kernphysik, Heidelberg, Germany), B. Tu (Max-Planck-Institut f\"ur Kernphysik, Heidelberg, Germany, Shanghai EBIT laboratory, Institute of Modern Physics, Fudan University, Shanghai, China), M. Moretti (Max-Planck-Institut f\"ur Kernphysik, Heidelberg, Germany), C. M. K\"onig (Max-Planck-Institut f\"ur Kernphysik, Heidelberg, Germany), F. Hei{\ss}e (Max-Planck-Institut f\"ur Kernphysik, Hei…

A large hole in pseudo-random graphs
Sahar Diskin, Michael Krivelevich, Itay Markbreit, Maksim Zhukovskii
https://arxiv.org/abs/2505.23384 https://

A large hole in pseudo-random graphs
We show that there exist constants $δ_1,δ_2>0$ such that if $G$ is an $(n,d,λ)$-graph with $λ/d\leδ_1$, then $G$ contains an induced cycle of length at least $δ_2n/d$. We further demonstrate that, up to a constant factor, this is best possible. Utilising our techniques, we derive that the number of non-isomorphic induced subgraphs of such $G$ is at least exponential in $n\log d/d$, and further demonstrate that this is tight up to a constant factor in the exponent.

This https://arxiv.org/abs/2412.03238 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_csDS_…

Dynamic Consistent $k$-Center Clustering with Optimal Recourse
Given points from an arbitrary metric space and a sequence of point updates sent by an adversary, what is the minimum recourse per update (i.e., the minimum number of changes needed to the set of centers after an update), in order to maintain a constant-factor approximation to a $k$-clustering problem? This question has received attention in recent years under the name consistent clustering. Previous works by Lattanzi and Vassilvitskii [ICLM '17] and Fichtenberger, Lattanzi, Norouzi-Fard, and…

Robust Estimation in Step-Stress Experiments under Exponential Lifetime Distributions
Mar\'ia Jaenada, Juan Manuel Mill\'an, Leandro Pardo
https://arxiv.org/abs/2506.04445

Robust Estimation in Step-Stress Experiments under Exponential Lifetime Distributions
Many modern products exhibit high reliability, often resulting in long times to failure. Consequently, conducting experiments under normal operating conditions may require an impractically long duration to obtain sufficient failure data for reliable statistical inference. As an alternative, accelerated life tests (ALTs) are employed to induce earlier failures and thereby reduce testing time. In step-stress experiments a stress factor that accelerates product degradation is identified and system…

ecoli_transcription: E. coli transcription network (2002)
Network of operons and their pairwise interactions, via transcription factor-based regulation, within the bacteria Escherichia coli.
This network has 424 nodes and 577 edges.
Tags: Biological, Gene regulation, Unweighted
https://networks.s…

This https://arxiv.org/abs/2505.22562 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_mat…

Equidistant Hypersurfaces Of The Complex Bidisk $\mathbb{H}^2_{\mathbb{C}}\times \mathbb{H}^2_{\mathbb{C}}$
We consider the isometries of the complex hyperbolic bidisk, that is, the product space $\mathbb{H}^2_{\mathbb{C}} \times \mathbb{H}^2_{\mathbb{C}} $, where each factor $ \mathbb{H}^2_{\mathbb{C}} $ denotes the complex hyperbolic plane. We investigate the Dirichlet domain formed by the action of a cyclic subgroup $(g_1, g_2)$, where each $g_i$ is loxodromic. We prove that such a Dirichlet domain has two sides.

This https://arxiv.org/abs/2301.06473 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_mat…

Structure of Kähler foliations with negative transverse Ricci curvature
We investigate the structure of transversely Kähler foliations with quasi-negative tranverse Ricci curvature. In particular, we prove a de Rham type theorem decomposition on the leaf space where we characterize each factor.

Super Macdonald polynomials and BPS state counting on the blow-up
Hiroaki Kanno, Ryo Ohkawa, Jun'ichi Shiraishi
https://arxiv.org/abs/2506.01415 https:…

Super Macdonald polynomials and BPS state counting on the blow-up
We explore the relation of the super Macdonald polynomials and the BPS state counting on the blow-up of $\mathbb{P}^2$, which is mathematically described by framed stable perverse coherent sheaves. Fixed points of the torus action on the moduli space of BPS states are labeled by super partitions. From the equivariant character of the tangent space at the fixed points we can define the Nekrasov factor for a pair of super partitions, which is used for the localization computation of the partition…

Oregon becomes second state to ban sale of precise geolocation data https://therecord.media/oregon-passes-geolocation-kids-data-bill

This https://arxiv.org/abs/2211.07055 has been replaced.
link: https://scholar.google.com/scholar?q=a

Geometric complexity theory for product-plus-power
According to Kumar's recent surprising result (ToCT'20), a small border Waring rank implies that the polynomial can be approximated as a sum of a constant and a small product of linear polynomials. We prove the converse of Kumar's result and establish a tight connection between border Waring rank and the model of computation in Kumar's result. In this way, we obtain a new formulation of border Waring rank, up to a factor of the degree. We connect this new formulation to the orbit closure proble…

Record-high-Q AMTIR-1 microresonators for mid- to long-wave infrared nonlinear photonics
Liu Yang, Ryo Sugano, Ryomei Takabayashi, Hajime Kumazaki, Yongyong Zhuang, Xiaoyong Wei, Takasumi Tanabe, Shun Fujii
https://arxiv.org/abs/2505.23362

Record-high-Q AMTIR-1 microresonators for mid- to long-wave infrared nonlinear photonics
AMTIR-1 chalcogenide glass has shown its potential for use in thermal imaging systems owing to its low refractive index, thermal resistance and high transparency across the infrared wavelength regime. Here we report a millimeter-scale high-Q whispering gallery mode microresonator made of AMTIR-1. The recorded Q-factor has reached $1.2\times10^7$ at 1550~nm, which is almost two-orders of magnitude higher than previously reported values. We characterize the thermal properties, where low thermal c…

This https://arxiv.org/abs/2412.03238 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_csDS_…

Dynamic Consistent $k$-Center Clustering with Optimal Recourse
Given points from an arbitrary metric space and a sequence of point updates sent by an adversary, what is the minimum recourse per update (i.e., the minimum number of changes needed to the set of centers after an update), in order to maintain a constant-factor approximation to a $k$-clustering problem? This question has received attention in recent years under the name consistent clustering. Previous works by Lattanzi and Vassilvitskii [ICLM '17] and Fichtenberger, Lattanzi, Norouzi-Fard, and…

The Role of Intangible Investment in Predicting Stock Returns: Six Decades of Evidence
Lin Li
https://arxiv.org/abs/2505.16336 https://

The Role of Intangible Investment in Predicting Stock Returns: Six Decades of Evidence
Using an intangible intensity factor that is orthogonal to the Fama--French factors, we compare the role of intangible investment in predicting stock returns over the periods 1963--1992 and 1993--2022. For 1963--1992, intangible investment is weak in predicting stock returns, but for 1993--2022, the predictive power of intangible investment becomes very strong. Intangible investment has a significant impact not only on the MTB ratio (Fama--French high minus low [HML] factor) but also on operati…

Generalized Brans-Dicke theory from Verlinde's entropic gravity
Salih Kibaro\u{g}lu, Mustafa Senay
https://arxiv.org/abs/2506.02729 https://

Generalized Brans-Dicke theory from Verlinde's entropic gravity
In this work, we develop a q-deformed scalar-tensor theory of gravitation by combining Verlinde's entropic gravity paradigm with statistical deformation effects. The resulting model modifies the Brans-Dicke framework through a deformation function, treated as a constant rescaling factor for the effective gravitational coupling. We derive the corresponding q-deformed field equations and analyze their theoretical consistency including the recovery of standard gravitational models in specific limi…

ecoli_transcription: E. coli transcription network (2002)
Network of operons and their pairwise interactions, via transcription factor-based regulation, within the bacteria Escherichia coli.
This network has 424 nodes and 577 edges.
Tags: Biological, Gene regulation, Unweighted
https://networks.s…

An Efficient and Interpretable Autoregressive Model for High-Dimensional Tensor-Valued Time Series
Yuxi Cai, Lan Li, Yize Wang, Guodong Li
https://arxiv.org/abs/2506.01658

An Efficient and Interpretable Autoregressive Model for High-Dimensional Tensor-Valued Time Series
In autoregressive modeling for tensor-valued time series, Tucker decomposition, when applied to the coefficient tensor, provides a clear interpretation of supervised factor modeling but loses its efficiency rapidly with increasing tensor order. Conversely, canonical polyadic (CP) decomposition maintains efficiency but lacks a precise statistical interpretation. To attain both interpretability and powerful dimension reduction, this paper proposes a novel approach under the supervised factor mode…

Collimation of Fast Radio Burster 20201124A; Repeaters vs. Apparent Non-Repeaters
J. I. Katz
https://arxiv.org/abs/2505.24082 https://

Collimation of Fast Radio Burster 20201124A; Repeaters vs. Apparent Non-Repeaters
The recent report of a period in the active repeating Fast Radio Burster 20201124A and measurement of its spindown rate place bounds on the solid angle of its emission on the basis of energetics. The bound depends on the (unknown) efficiency of conversion of rotational energy to coherent radio emission and implies a lower bound on the Lorentz factor of the radiating charges. Bursts may be emitted along the magnetic dipole axis, in repeaters aligned with the rotational axis and the line of sight…

Typical $T$-free graphs
Bruce Reed, Yelena Yuditsky
https://arxiv.org/abs/2506.01067 https://arxiv.org/pdf/2506.01067

Typical $T$-free graphs
We prove that for every tree $T$ which is not an edge, for almost every graph $G$ which does not contain $T$ as an induced subgraph, $V(G)$ has a partition into $α(T)-1$ parts certifying this fact. Each part induces a graph which is $P_4$-free and has further properties which depend on $T$. As a consequence we obtain good bounds (often tight up to a constant factor) on the number of $T$-free graphs and show in a follow-up paper~\cite{RY} that almost every $T$-free graph $G$ has chromatic numbe…

This https://arxiv.org/abs/2505.02678 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_qfi…

Why is the volatility of single stocks so much rougher than that of the S&P500?
The Nested factor model was introduced by Chicheportiche et al. to represent non-linear correlations between stocks. Stock returns are explained by a standard factor model, but the (log)-volatilities of factors and residuals are themselves decomposed into factor modes, with a common dominant volatility mode affecting both market and sector factors but also residuals. Here, we consider the case of a single factor where the only dominant log-volatility mode is rough, with a Hurst exponent $H \sim…

This https://arxiv.org/abs/2501.00417 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_csSI_…

PureRank: A Parameter-Free Recursive Importance Measure for Network Nodes
Classical parameter-free centrality measures based on the recursive definition of importance (RDI), such as eigenvector centrality and Seeley centrality, are limited to strongly connected networks, while widely used methods like Katz centrality and PageRank rely on free parameters, such as the damping factor, to handle general networks. This motivates our central question: can an RDI-based importance (centrality) measure be defined for arbitrary networks without any tunable parameters? We answe…

This https://arxiv.org/abs/2504.19605 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_ees…

A Comparative Study on Positional Encoding for Time-frequency Domain Dual-path Transformer-based Source Separation Models
In this study, we investigate the impact of positional encoding (PE) on source separation performance and the generalization ability to long sequences (length extrapolation) in Transformer-based time-frequency (TF) domain dual-path models. The length extrapolation capability in TF-domain dual-path models is a crucial factor, as it affects not only their performance on long-duration inputs but also their generalizability to signals with unseen sampling rates. While PE is known to significantly i…

This https://arxiv.org/abs/2505.14571 has been replaced.
initial toot: https://mastoxiv.page/@arX…

Dynamic correlations of frustrated quantum spins from high-temperature expansion
For quantum spin systems in equilibrium, the dynamic structure factor (DSF) is among the most feature-packed experimental observables. However, from a theory perspective it is often hard to simulate in an unbiased and accurate way, especially for frustrated and high-dimensional models at intermediate temperature. We address this challenge by introducing a dynamic extension of the high-temperature expansion as an efficient numerical approach to the DSF for arbitrary lattices. We focus on the nea…

ecoli_transcription: E. coli transcription network (2002)
Network of operons and their pairwise interactions, via transcription factor-based regulation, within the bacteria Escherichia coli.
This network has 424 nodes and 577 edges.
Tags: Biological, Gene regulation, Unweighted
https://networks.s…

This https://arxiv.org/abs/2412.12205 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_nuc…

Radiative Capture Reaction $d(α,γ)^{6}\mathrm{Li} $ in Cluster Effective Field Theory
In this study, we focus on the radiative capture process of the deuteron on alpha particle leading to the formation of $^6{\textrm{Li}}$ in the two-body formalism through the cluster effective field theory~(CEFT). It was the primitive nuclear reaction to produce ${^6 \textrm{Li}}$ in a few minutes after the Big Bang. In detail, we outline the calculation of the dominant $E1$ and $E2$ electromagnetic transition amplitudes of $d(α,γ){^6\textrm{Li}}$. Then, we obtain the astrophysical S-factor b…

Heavy mesons in an effective quark model with a nonlocal interaction
A. Friesen, Yu. Kalinovsky, A. Khmelev
https://arxiv.org/abs/2505.24542 https://

Heavy mesons in an effective quark model with a nonlocal interaction
We discuss the properties of light and heavy mesons in the framework of a model with nonlocal interaction. We start from the Bethe-Salpeter equation, choosing the interaction kernel in a nonlocal form with the Gaussian meson vertex function. We fix the model parameters using electromagnetic and leptonic decay constants. Within this model, we consider the neutral pion transition form factor ${F}_{πγ}$and apply the model to the transition form factors of heavy pseudoscalar mesons $η_c$ and $η…

Equidistant Hypersurfaces Of The Complex Bidisk $\mathbb{H}^2_{\mathbb{C}}\times \mathbb{H}^2_{\mathbb{C}}$
Krishnendu Gongopadhyay, Lokenath Kundu, Aditya Tiwari
https://arxiv.org/abs/2505.22562

Equidistant Hypersurfaces Of The Complex Bidisk $\mathbb{H}^2_{\mathbb{C}}\times \mathbb{H}^2_{\mathbb{C}}$
We consider the isometries of the complex hyperbolic bidisk, that is, the product space $\mathbb{H}^2_{\mathbb{C}} \times \mathbb{H}^2_{\mathbb{C}} $, where each factor $ \mathbb{H}^2_{\mathbb{C}} $ denotes the complex hyperbolic plane. We investigate the Dirichlet domain formed by the action of a cyclic subgroup $(g_1, g_2)$, where each $g_i$ is loxodromic. We prove that such a Dirichlet domain has two sides.

This https://arxiv.org/abs/2503.15613 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_…

Prompt Periodicity in the GRB 211211A Precursor: Black-hole or magnetar engine?
The merger origin long GRB 211211A was a class (re-)defining event. A precursor was identified with a $\sim 1$ s separation from the main burst, as well as a claimed candidate quasi-periodic oscillation (QPO) with a frequency $\sim20$ Hz. Here, we explore the implications of the precursor, assuming the quasi-periodicity is real. The precursor variability timescale requires relativistic motion with a Lorentz factor $Γ\gtrsim80$, and implies an engine driven jetted outflow. The declining amplitu…

This https://arxiv.org/abs/2302.11862 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_mat…

Bounds on Functionality and Symmetric Difference -- Two Intriguing Graph Parameters
Functionality ($\mathrm{fun}$) is a graph parameter that generalizes graph degeneracy defined by Alecu et al. [JCTB, 2021]. They research the relation of functionality to many other graphs parameters (tree-width, clique-width, VC-dimension, etc.). Extending their research, we completely characterize the functionality of random graph $G(n,p)$ for all possible $p$. We provide matching (up to a constant factor) lower and upper bound for a large range of $p$. It follows from our bounds for $G(n,p)$…

Low-loss, fabrication-tolerant, and highly-tunable Sagnac loop reflectors and Fabry-P\'erot cavities on thin-film lithium niobate
Luke Qi, Ali Khalatpour, Jason Herrmann, Taewon Park, Devin Dean, Sam Robison, Alexander Hwang, Hubert Stokowski, Darwin Serkland, Martin Fejer, Amir H. Safavi-Naeini
https://arxiv.org/abs/2505.23…

Low-loss, fabrication-tolerant, and highly-tunable Sagnac loop reflectors and Fabry-Pérot cavities on thin-film lithium niobate
We present low-loss ($<1.5\%$) and power-efficient Mach-Zehnder interferometers (MZIs) on thin-film lithium niobate. To accurately measure low MZI losses, we develop a self-calibrated method using tunable Sagnac loop reflectors (SLRs) to build cavities. Fabry-Pérot cavities constructed from these fabrication-tolerant SLRs achieve an intrinsic quality factor of $2 \times 10^6$. By implementing thermal isolation trenches, we also demonstrate a $>10\times$ reduction in power consumption for therm…

Innovative DC-coupled Resistive Silicon Detector for 4D tracking
R. Arcidiacono, G. Bardelli, M. Bartolini, M. Boscardin, N. Cartiglia, A. Cassese, M. Centis Vignali, T. Croci, M. Ferrero, A. Fondacci, O. Hammad Ali, M. Lizzo, L. Menzio, A. Morozzi, F. Moscatelli, D. Passeri, G. Paternoster, G. Sguazzoni, F. Siviero, V. Sola, L. Viliani
https://

Innovative DC-coupled Resistive Silicon Detector for 4D tracking
In the past 10 years, two design innovations, the introduction of low internal gain (LGAD) and of resistive read-out (RSD), have radically changed the performance of silicon detectors. The LGAD mechanism, increasing the signal-to-noise ratio by about a factor of 20, leads to improved time resolution (typically 30 ps for a 50-$μ$m thick sensor), while resistive read-out, sharing the collected charge among read-out electrodes, leads to excellent spatial resolution even using large pixels (about …

This https://arxiv.org/abs/2501.00417 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_csSI_…

PureRank: A Parameter-Free Recursive Importance Measure for Network Nodes
Classical parameter-free centrality measures based on the recursive definition of importance (RDI), such as eigenvector centrality and Seeley centrality, are limited to strongly connected networks, while widely used methods like Katz centrality and PageRank rely on free parameters, such as the damping factor, to handle general networks. This motivates our central question: can an RDI-based importance (centrality) measure be defined for arbitrary networks without any tunable parameters? We answe…

Bayesian Inference for Spatially-Temporally Misaligned Data Using Predictive Stacking
Soumyakanti Pan, Sudipto Banerjee
https://arxiv.org/abs/2505.24397 ht…

Bayesian Inference for Spatially-Temporally Misaligned Data Using Predictive Stacking
Air pollution remains a major environmental risk factor that is often associated with adverse health outcomes. However, quantifying and evaluating its effects on human health is challenging due to the complex nature of exposure data. Recent technological advances have led to the collection of various indicators of air pollution at increasingly high spatial-temporal resolutions (e.g., daily averages of pollutant levels at spatial locations referenced by latitude-longitude). However, health outco…