Tootfinder

This https://arxiv.org/abs/2403.09568 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_…

Determining stellar accretion rates from $Pa_α$ and $Br_β$ emission lines with JWST NIRSpec
In this letter we present the first systematic spectroscopic measurements of the Near-InfraRed (NIR) hydrogen recombination lines Paschen alpha ($Pa_α$ $λ= 1.875 μm$) and Brackett beta ($Br_β$ $λ= 2.626 μm$), produced by pre-main-sequence (PMS) stars. These stars, consisting of T Tauri and Herbig AeBe stars are located in the massive Galactic star-formation region NGC 3603. The measurements were obtained from JWST NIRSpec, using multi-object spectroscopy (MOS) mode. Utilising existing emp…

Well, that was close...
Was printing two items in #byobject mode. First one was doing well so I decided to go grocery shopping and check remotely from time to time. Obviously I forgot about that and when I remembered, the print was about 50% into the second item but nothing on the build plate. 🙈 I cancelled it remotely, but of course was worried about the desaster on the

This https://arxiv.org/abs/2310.04736 has been replaced.
link: https://scholar.google.com/scholar?q=a

Evidence for a toroidal electric dipole mode in nuclei
Dipole toroidal modes appear in many fields of physics. In nuclei, such a mode was predicted more than 50 years ago, but clear experimental evidence was lacking so far. Using a combination of high-resolution inelastic scattering experiments with photons, electrons and protons, we identify for the first time candidates for toroidal dipole excitations in the nucleus $^{58}$Ni and demonstrate that transverse electron scattering form factors represent a relevant experimental observable to prove the…

This https://arxiv.org/abs/2308.03938 has been replaced.
initial toot: https://mastoxiv.page/@a…

Nonlinear Landau resonant interaction between whistler waves and electrons: Excitation of electron acoustic waves
Electron acoustic waves (EAWs), as well as electron-acoustic solitary structures, play a crucial role in thermalization and acceleration of electron populations in Earth's magnetosphere. These waves are often observed in association with whistler-mode waves, but the detailed mechanism of EAW and whistler wave coupling is not yet revealed. We investigate the excitation mechanism of EAWs and their potential relation to whistler waves using particle-in-cell simulations. Whistler waves are first ex…

Linear inviscid damping in the presence of an embedding eigenvalue
Siqi Ren, Zhifei Zhang
https://arxiv.org/abs/2402.18229 https://ar…

Linear inviscid damping in the presence of an embedding eigenvalue
In this paper, we investigate the long-time dynamics of the linearized 2-D Euler equations around a hyperbolic tangent flow $(\tanh y,0)$. A key difference compared to previous results is that the linearized operator has an embedding eigenvalue, which has a significant impact on the dynamics of the linearized system. For the first mode, the dynamics consists of there parts: non-decay part related to the eigenspace associated with the embedding eigenvalue, slow decay part due to the resolvent si…

Towards spatiotemporal integration of bus transit with data-driven approaches
J\'ulio Borges, Altieris M. Peixoto, Thiago H. Silva, Anelise Munaretto, Ricardo Luders
https://arxiv.org/abs/2402.17866

Towards spatiotemporal integration of bus transit with data-driven approaches
This study aims to propose an approach for spatiotemporal integration of bus transit, which enables users to change bus lines by paying a single fare. This could increase bus transit efficiency and, consequently, help to make this mode of transportation more attractive. Usually, this strategy is allowed for a few hours in a non-restricted area; thus, certain walking distance areas behave like "virtual terminals." For that, two data-driven algorithms are proposed in this work. First, a new algor…

Flow-based Nonperturbative Simulation of First-order Phase Transitions
Yang Bai, Ting-Kuo Chen
https://arxiv.org/abs/2404.18323 https://

Flow-based Nonperturbative Simulation of First-order Phase Transitions
We present a flow-based method for simulating and calculating nucleation rates of first-order phase transitions in scalar field theory on a lattice. Motivated by recent advancements in machine learning tools, particularly normalizing flows for lattice field theory, we propose the ``partitioning flow-based Markov chain Monte Carlo (PFMCMC) sampling" method to address two challenges encountered in normalizing flow applications for lattice field theory: the ``mode-collapse" and ``rare-event sampli…

This https://arxiv.org/abs/2312.09848 has been replaced.
initial toot: https://mastoxiv.page/@…

Dynamic Hysteresis Across a Dissipative Multi-Mode Phase Transition
Dissipative phase transitions are characteristic features in open quantum systems. Key signatures are the dynamical switching between different states in the vicinity of the phase transition and the appearance of hysteresis. Here, we experimentally study dynamic sweeps across a first order dissipative phase transition in a multi-mode driven-dissipative system. In contrast to previous studies, we perform sweeps of the dissipation strength instead of the driving strength. We extract exponents for…

$L^\infty$-error bounds for approximations of the Koopman operator by kernel extended dynamic mode decomposition
Frederik K\"ohne, Friedrich M. Philipp, Manuel Schaller, Anton Schiela, Karl Worthmann
https://arxiv.org/abs/2403.18809

$L^\infty$-error bounds for approximations of the Koopman operator by kernel extended dynamic mode decomposition
Extended dynamic mode decomposition (EDMD) is a well-established method to generate a data-driven approximation of the Koopman operator for analysis and prediction of nonlinear dynamical systems. Recently, kernel EDMD (kEDMD) has gained popularity due to its ability to resolve the challenging task of choosing a suitable dictionary by defining data-based observables. In this paper, we provide the first pointwise bounds on the approximation error of kEDMD. The main idea consists of two steps. Fir…

Optimizing Portfolio Management and Risk Assessment in Digital Assets Using Deep Learning for Predictive Analysis
Qishuo Cheng, Le Yang, Jiajian Zheng, Miao Tian, Duan Xin
https://arxiv.org/abs/2402.15994 https://arxiv.org/pdf/2402.15994
arXiv:2402.15994v1 Announce Type: new
Abstract: Portfolio management issues have been extensively studied in the field of artificial intelligence in recent years, but existing deep learning-based quantitative trading methods have some areas where they could be improved. First of all, the prediction mode of stocks is singular; often, only one trading expert is trained by a model, and the trading decision is solely based on the prediction results of the model. Secondly, the data source used by the model is relatively simple, and only considers the data of the stock itself, ignoring the impact of the whole market risk on the stock. In this paper, the DQN algorithm is introduced into asset management portfolios in a novel and straightforward way, and the performance greatly exceeds the benchmark, which fully proves the effectiveness of the DRL algorithm in portfolio management. This also inspires us to consider the complexity of financial problems, and the use of algorithms should be fully combined with the problems to adapt. Finally, in this paper, the strategy is implemented by selecting the assets and actions with the largest Q value. Since different assets are trained separately as environments, there may be a phenomenon of Q value drift among different assets (different assets have different Q value distribution areas), which may easily lead to incorrect asset selection. Consider adding constraints so that the Q values of different assets share a Q value distribution to improve results.

Linear inviscid damping in the presence of an embedding eigenvalue
Siqi Ren, Zhifei Zhang
https://arxiv.org/abs/2402.18229 https://ar…

Linear inviscid damping in the presence of an embedding eigenvalue
In this paper, we investigate the long-time dynamics of the linearized 2-D Euler equations around a hyperbolic tangent flow $(\tanh y,0)$. A key difference compared to previous results is that the linearized operator has an embedding eigenvalue, which has a significant impact on the dynamics of the linearized system. For the first mode, the dynamics consists of there parts: non-decay part related to the eigenspace associated with the embedding eigenvalue, slow decay part due to the resolvent si…

This https://arxiv.org/abs/2402.06139 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_mat…

Sliding Mode Observers for Set-valued Lur'e Systems with Uncertainties Beyond Observational Range
In this paper, we introduce a new sliding mode observer for Lur'e set-valued dynamical systems, particularly addressing challenges posed by uncertainties not within the standard range of observation. Traditionally, most of Luenberger-like observers and sliding mode observer have been designed only for uncertainties in the range of observation. Central to our approach is the treatment of the uncertainty term which we decompose into two components: the first part in the observation subspace and t…

Statistical analysis and method to propagate the impact of measurement uncertainty on dynamic mode decomposition
P. Algikar, P. Sharma, M. Netto, L. Mili
https://arxiv.org/abs/2403.17318

Statistical analysis and method to propagate the impact of measurement uncertainty on dynamic mode decomposition
We apply random matrix theory to study the impact of measurement uncertainty on dynamic mode decomposition. Specifically, when the measurements follow a normal probability density function, we show how the moments of that density propagate through the dynamic mode decomposition. While we focus on the first and second moments, the analytical expressions we derive are general and can be extended to higher-order moments. Further, the proposed numerical method to propagate uncertainty is agnostic o…

This must have been one of the very first appearances of Depeche Mode on #TOTP. Previously there was some other band called Depeshay Mode.

Help needed with #LibreraReader: I cannot find out how to open the menu to change between dark and light mode while having a document open. It appeared the first time I opened the book, but not anymore.
Any idea? Tested it with the F-Droid and the Play store version.
Android 14
#Librera

This https://arxiv.org/abs/2304.01580 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_csCR_…

Untargeted Near-collision Attacks on Biometrics: Real-world Bounds and Theoretical Limits
A biometric recognition system can operate in two distinct modes: identification or verification. In the first mode, the system recognizes an individual by searching the enrolled templates of all the users for a match. In the second mode, the system validates a user's identity claim by comparing the fresh provided template with the enrolled template. The biometric transformation schemes usually produce binary templates that are better handled by cryptographic schemes, and the comparison is base…

This https://arxiv.org/abs/2304.02433 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_ees…

On Continuous Full-Order Integral-Terminal Sliding Mode Control with Unknown Apriori Bound on Uncertainty
This study aims at providing a solution to the problem of designing a continuous and finite-time control for a class of nonlinear systems in the presence of matched uncertainty with an unknown apriori bound. First, we propose a Full-Order Integral-Terminal Sliding Manifold (FOITSM) with a conventional (discontinuous) sliding mode to show that it provides the combined attributes of the nonsingular terminal and integral sliding mode algorithms. Secondly, an Adaptive Disturbance Observer (ADO) has…

This https://arxiv.org/abs/2310.06018 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_grqc_…

Gravitational probe of quantum spacetime
A quest for phenomenological footprints of quantum gravity is among the central scientific tasks in the rising era of gravitational wave astronomy. We study gravitational wave dynamics within the noncommutative geometry framework, based on a Drinfeld twist and newly proposed noncommutative Einstein equation, and obtain the leading quantum correction to Regge-Wheeler potential up to first order in the noncommutativity parameter. By calculating the quasinormal mode frequencies we show that the no…

One for the “she’s so stupid how can you put your car into reverse accidentally!!!1” replyguys:
Some Teslas don’t have a gear-selector stalk and literally guess what gear you want.
Yes, you read that right.
https://www.theverge.com/22348668/tesla-pr

Here’s how Tesla’s new touchscreen drive selector works
Tesla’s redesigned Model S and Model X are meant to automatically switch between park, reverse, neutral, and drive, and they have no physical gear selector. There is a touchscreen option as a backup, though, and a new video posted to Twitter offers the first look at how it works.

This https://arxiv.org/abs/2306.08353 has been replaced.
link: https://scholar.google.com/scholar?q=a

Characterizing First Arrival Position Channels: Noise Distribution and Capacity Analysis
This paper introduces a novel mathematical model for Molecular Communication (MC) systems, utilizing First Arrival Position (FAP) as a fundamental mode of information transmission. We address two critical challenges: the characterization of FAP density and the establishment of capacity bounds for channels with vertically-drifted FAP. Our method relate macroscopic Partial Differential Equation (PDE) models to microscopic Stochastic Differential Equation (SDE) models, resulting in a precise expre…

Magnetic amplification in pre-merger neutron stars through resonance-induced magnetorotational instabilities
Arthur G. Suvorov, Hao-Jui Kuan, Alexis Reboul-Salze, Kostas D. Kokkotas
https://arxiv.org/abs/2404.14529

Magnetic amplification in pre-merger neutron stars through resonance-induced magnetorotational instabilities
Tidal resonances in the final seconds of a binary neutron-star inspiral can excite oscillation modes in one or both of the constituents to large amplitudes. Under favorable circumstances, resonant pulsations can overstrain the stellar crust and unleash a torrent of magnetoelastic energy that manifests as a gamma-ray `precursor flare'. We show that for realistic, stratified stars rotating with a spin frequency of $\gtrsim 30\,$Hz, the fundamental $g$-mode or its first overtone can also execute a…

Multiplexed quantum state transfer in waveguides
Guillermo F. Pe\~nas, Ricardo Puebla, Juan Jos\'e Garc\'ia-Ripoll
https://arxiv.org/abs/2403.12222

Multiplexed quantum state transfer in waveguides
In this article, we consider a realistic waveguide implementation of a quantum network that serves as a testbed to show how to maximize the storage and manipulation of quantum information in QED setups. We analyze two approaches using wavepacket engineering and quantum state transfer protocols. First, we propose and design a family of orthogonal photons in the time domain. These photons allow for a selective interaction with distinct targeted qubits. Yet, mode multiplexing employing resonant no…

Stochastic Nonlinear Dynamical Modelling of SRAM Bitcells in Retention Mode
L\'eopold Van Brandt, Denis Flandre, Jean-Charles Delvenne
https://arxiv.org/abs/2402.11691

Stochastic Nonlinear Dynamical Modelling of SRAM Bitcells in Retention Mode
SRAM bitcells in retention mode behave as autonomous stochastic nonlinear dynamical systems. From observation of variability-aware transient noise simulations, we provide an unidimensional model, fully characterizable by conventional deterministic SPICE simulations, insightfully explaining the mechanism of intrinsic noise-induced bit flips. The proposed model is exploited to, first, explain the reported inaccuracy of existing closed-form near-equilibrium formulas aimed at predicting the mean ti…

Core performance predictions in projected SPARC first-campaign plasmas with nonlinear CGYRO
P. Rodriguez-Fernandez, N. T. Howard, A. Saltzman, L. Shoji, T. Body, D. J. Battaglia, J. W. Hughes, J. Candy, G. M. Staebler, A. J. Creely
https://arxiv.org/abs/2403.15633

Core performance predictions in projected SPARC first-campaign plasmas with nonlinear CGYRO
This work characterizes the core transport physics of SPARC early-campaign plasmas using the PORTALS-CGYRO framework. Empirical modeling of SPARC plasmas with L-mode confinement indicates an ample window of breakeven (Q>1) without the need of H-mode operation. Extensive modeling of multi-channel (electron energy, ion energy and electron particle) flux-matched conditions with the nonlinear CGYRO code for turbulent transport coupled to the macroscopic plasma evolution using PORTALS reveal that th…

Oh wow... I never knew! 🤯
https://aus.social/@kauer/112205938142928740

This https://arxiv.org/abs/2304.01580 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_csCR_…

Untargeted Near-collision Attacks on Biometrics: Real-world Bounds and Theoretical Limits
A biometric recognition system can operate in two distinct modes: identification or verification. In the first mode, the system recognizes an individual by searching the enrolled templates of all the users for a match. In the second mode, the system validates a user's identity claim by comparing the fresh provided template with the enrolled template. The biometric transformation schemes usually produce binary templates that are better handled by cryptographic schemes, and the comparison is base…

This https://arxiv.org/abs/2009.10985 has been replaced.
link: https://scholar.google.com/scholar?q=a

Experimental review on Majorana zero-modes in hybrid nanowires
As the condensed matter analog of Majorana fermion, the Majorana zero-mode is well known as a building block of fault-tolerant topological quantum computing. This review focuses on the recent progress of Majorana experiments, especially experiments about semiconductor-superconductor hybrid devices. We first sketch Majorana zero-mode formation from a bottom-up view, which is more suitable for beginners and experimentalists. Then, we survey the status of zero-energy state signatures reported rece…

This https://arxiv.org/abs/1911.04730 has been replaced.
link: https://scholar.google.com/scholar?q=a

Numerical Simulation of Jet Mode in Electrospraying of Newtonian and Viscoelastic Fluids
The purpose of this article is to explore the role of viscoelastic properties of polymeric solutions on the jet mode in the electrospray process. In this research, several numerical simulations were performed to model the behavior of electrified Newtonian and viscoelastic jets. First, used for validating viscoelastic constitutive equations and their implementation, the benchmark problem of the sedimenting sphere is stabilized beyond the previously suggested threshold. Then, an electrified DI wa…

Exploring Neural Network Landscapes: Star-Shaped and Geodesic Connectivity
Zhanran Lin, Puheng Li, Lei Wu
https://arxiv.org/abs/2404.06391 https://<…

Exploring Neural Network Landscapes: Star-Shaped and Geodesic Connectivity
One of the most intriguing findings in the structure of neural network landscape is the phenomenon of mode connectivity: For two typical global minima, there exists a path connecting them without barrier. This concept of mode connectivity has played a crucial role in understanding important phenomena in deep learning. In this paper, we conduct a fine-grained analysis of this connectivity phenomenon. First, we demonstrate that in the overparameterized case, the connecting path can be as simple…

Finally started work on the new #Pathfinder Second Edition character sheet. I'm trying to keep the same feel as the one I made for first edition, but since they are significantly different so will be the layout. The goal is to keep the first page very dense info-wise while still keeping it readable. #ttrpgs

Irreversible Boltzmann samplers in dense liquids: weak-coupling approximation and mode-coupling theory
Federico Ghimenti, Ludovic Berthier, Grzegorz Szamel, Fr\'ed\'eric van Wijland
https://arxiv.org/abs/2404.14863

Irreversible Boltzmann samplers in dense liquids: weak-coupling approximation and mode-coupling theory
Exerting a nonequilibrium drive on an otherwise equilibrium Langevin process brings the dynamics out of equilibrium but can also speedup the approach to the Boltzmann steady-state. Transverse forces are a minimal framework to achieve dynamical acceleration of the Boltzmann sampling. We consider a simple liquid in three space dimensions subjected to additional transverse pairwise forces, and quantify the extent to which transverse forces accelerate the dynamics. We first explore the dynamics of …

On the incidence rate of RR Lyrae stars with non-radial modes
H. Netzel, V. Varga, R. Szabo, R. Smolec, E. Plachy
https://arxiv.org/abs/2404.14373 https://…

On the incidence rate of RR Lyrae stars with non-radial modes
Over the recent years, additional low-amplitude non-radial modes were detected in many of the first-overtone RR Lyrae stars. These non-radial modes form a characteristic period ratio with the dominant first-overtone mode of around 0.61. The incidence rate of this phenomenon changes from population to population. It is also strongly dependent on the quality of the analyzed data. Current models explaining these additional signals involve non-radial modes of degrees 8 and 9. Using synthetic horizo…

If you can play it, you can be it.
#Esports #RepresentationMatters
From: @…

The New York Times :press: (@nytimes@press.coop)
MLB The Show Will Include Women Players for the First Time MLB The Show 24 will feature a career mode that allows gamers to create a female player and steer her journey to the big leagues. The game draws on the experiences of female baseball players. #press https://www.nytimes.com/2024/03/07/sports/baseball/mlb-the-show-24-women-players.html?utm_source=press.coop

This https://arxiv.org/abs/2306.08347 has been replaced.
initial toot: https://mastoxiv.page/@a…

Superconductivity in unconventional metals
Based on first-principles calculations, we demonstrate that 1H/2H-phase transition metal dichalcogenides MX2 (M=Nb,Ta; X=S,Se,Te) are unconventional metals, which have an empty-site band of $A_1'@1e$ elementary band representation at the Fermi level. The computed phonon dispersions indicate the stability of the system at high temperatures, while the presence of the soft phonon mode suggests a phase transition to the charge density wave state at low temperatures. Based on the Bardeen-Cooper-Schr…

#CJEU:
«a harmonised standard, adopted on the basis of a directive [...] forms part of EU law»
«the rule of law, which requires free access to EU law for all natural or legal persons of the European Union»
«there is an overriding public interest [...] justifying the disclosure of the requested harmonised standards»
«As is apparent [...] the Commission should have acknowledged [...]…

When did Enriched mode come to #Emacs?? This is the first time I'm reading about it.

This https://arxiv.org/abs/2305.08401 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_nuc…

Resolving phase transition properties of dense matter through tidal-excited g-mode from inspiralling neutron stars
The investigation of the phase state of dense matter is hindered by complications of first-principle nonperturbative quantum chromodynamics. By performing the first consistent general-relativistic calculations of tidal-excited g-mode of neutron stars with a first-order strong interaction phase transition in the high-density core, we demonstrate that gravitational wave signal during binary neutron star inspiral probes their innermost hadron-quark transition and provides potent constraints from p…

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.

This https://arxiv.org/abs/2402.01060 has been replaced.
link: https://scholar.google.com/scholar?q=a

Demonstration of a high-volume tunable axion haloscope above 7 GHz
We present results from the first experimental demonstration of a tunable thin-shell axion haloscope. This novel geometry decouples the overall volume of the cavity-based resonator from its resonant frequency, thereby evading the steep sensitivity degradation at high-frequencies. An aluminum $2.6$ L ($41$ $λ^3$) prototype which tunes from $7.1$ to $8.0$ GHz was fabricated and characterized at room temperature. An axion-sensitive, straightforwardly tunable $\mathrm{TM}$$_{010}$ mode is clearly …

Magnetic-field driven evolution of zero-energy mode on Bi islands deposited on Fe(Te,Se)
Kailun Chen, Chuanhao Wen, Zhiyong Hou, Huan Yang, Hai-Hu Wen
https://arxiv.org/abs/2404.12708

Magnetic-field driven evolution of zero-energy mode on Bi islands deposited on Fe(Te,Se)
We investigate the magnetic-field dependent evolution of the zero-bias conductance peaks (ZBCPs) on the nanoscale bismuth islands grown on the FeTe$_{0.55}$Se$_{0.45}$ substrate. The ZBCPs can be observed throughout the entire region on these islands, and their characteristics align with the signatures of Majorana zero modes. Remarkably, the evolution of ZBCPs on these islands exhibits anomalous behavior under varying magnetic fields: The magnitude of ZBCPs is first enhanced at weak fields lowe…

Day 3 of attempting to daily drive postmarketOS Linux on a OnePlus 6T:
I had my first crash! I wanted to unlock the phone while waiting for some coffee to finish brewing, and after a few seconds of black screen I got this.
After a hard reset it booted up fine again.
#postmarketOS #Linux

A new launch pad failure mode: Analysis of fine particles from the launch of the first Starship orbital test flight
B. Dotson, P. Metzger, J. Hafner, A. Shackelford, K. Birkenfeld, D. Britt, A. Ford, R. Truscott, S. Truscott, J. Zavaleta, J. Zemke, K. Purvis, M. Scudder, C. Johnson, J. Galloway, J. DeShetler
https://arxiv.org/ab…

A new launch pad failure mode: Analysis of fine particles from the launch of the first Starship orbital test flight
This study examines the characteristics, composition, and origin of fine particle debris samples collected following the launch of the first Starship orbital test flight, which suggests a new launch pad failure mode previously unknown. Particle shapes, sizes, bulk densities, and VIS/NIR/MIR spectra, of collected fine particle material from Port Isabel, TX, were analyzed and compared to pulverized concrete, Fondag (high temperature concrete), limestone, and sand recovered from the area near the …

Light storage in wavy dielectric grating with Kerr nonlinearity
Ma Luo
https://arxiv.org/abs/2402.12020 https://arxiv.org/pdf/2402.12…

Light storage in wavy dielectric grating with Kerr nonlinearity
Periodical corrugation in dielectric slab transfers the two waveguide modes at zero Bloch wave number into a leaky resonant mode and a symmetry protected bound states in the continuum (BIC) with small frequency detune. The leaky resonant mode can be directly excited by weak linearly polarized normally incident optical field. In the presence of Kerr nonlinearity, the BIC can be indirectly excited by an optical bistable response. Two types of bistable operations are considered. For the first type…

@…
I first used Linux when a student loaned me a Red Hat 3.0.3 CD - version released 1 May 1996 according to Wikipedia - and I booted it and was soon able to get it doing useful stuff in text mode, including running some of my shell scripts developed on Solaris.
Have made much use of it since on all classes of device from embedded routers t…

The VELOCE Modulation Zoo I. Spectroscopic detection of non-radial modes in the first-overtone Cepheids BG Crucis, QZ Normae, V0391 Normae, and V0411 Lacertae
H. Netzel, R. I. Anderson, G. Viviani
https://arxiv.org/abs/2403.13796

The VELOCE Modulation Zoo I. Spectroscopic detection of non-radial modes in the first-overtone Cepheids BG Crucis, QZ Normae, V0391 Normae, and V0411 Lacertae
The photometric observations from the recent decade revolutionized our view on classical pulsators. Low-amplitude signals have been detected photometrically in addition to the dominant high-amplitude radial mode pulsations in many RR Lyrae stars and classical Cepheids. First overtone (1O) pulsators with an additional low-amplitude signal at a period ratio of around 0.61 with the main mode, the so-called 0.61 stars, form the most populous group among these stars. The nature of this signal has be…

Search of CP violation in baryons with the LHCb detector
Chiara Mancuso
https://arxiv.org/abs/2404.01793 https://arxiv.org/pdf/2404.0…

Search of CP violation in baryons with the LHCb detector
The latest results from the LHCb collaboration for the search for $CP$ violation in $b$-baryon decays are reported here. The first article presented is the search conducted in the $Λ_b^0 \rightarrow p π^- π^+ π^- $ decay, and the subsequent observation of $P$ violation. The following paper describes the search and the first observation of the $Λ_b^0 \rightarrow D^0 p K^-$ decay, with $D^0 \rightarrow K π$, Cabibbo-favoured and doubly suppressed mode. This proceeding concludes with the fir…

Experimental analysis of the TRC benchmark system
Arati Bhattu, Svenja Hermann, Nidhal Jamia, Florian M\"uller, Maren Scheel, Christoph Schwingshackl, H. Nevzat \"Ozg\"uven, Malte Krack
https://arxiv.org/abs/2403.07438

Experimental analysis of the TRC benchmark system
The Tribomechadynamics Research Challenge (TRC) was a blind prediction of the vibration behavior of a thin plate clamped on two sides using bolted joints. The first bending mode's natural frequency and damping ratio were requested as function of the amplitude, starting from the linear regime until high levels, where both frictional contact and nonlinear bending-stretching coupling become relevant. The predictions were confronted with experimental results in a companion paper; the present articl…

Boosted four-top production at the LHC : a window to Randall-Sundrum or extended color symmetry
Debajyoti Choudhury, Kuldeep Deka, Lalit Kumar Saini
https://arxiv.org/abs/2404.04409

Boosted four-top production at the LHC : a window to Randall-Sundrum or extended color symmetry
Scenarios seeking to address the issue of electroweak symmetry breaking often have heavy colored gauge bosons coupling preferentially to the top quark. Considering the bulk Randall-Sundrum as a typical example, we consider the prospects of the first Kaluza-Klein mode ($G^{(1)}$) of the gluon being produced at the LHC in association with a $t \bar{t}$ pair. The enhanced coupling not only dictates that the dominant decay mode would be to a $t \bar{t}$ pair, but also to a very large $G^{(1)}$ widt…

The first high-redshift cavity power measurements of cool-core galaxy clusters with the International LOFAR Telescope
R. Timmerman, R. J. van Weeren, A. Botteon, H. J. A. R\"ottgering, L. K. Morabito, F. Sweijen
https://arxiv.org/abs/2403.03242

The first high-redshift cavity power measurements of cool-core galaxy clusters with the International LOFAR Telescope
Radio-mode feedback associated with the active galactic nuclei (AGN) at the cores of galaxy clusters injects large amount of energy into the intracluster medium (ICM), offsetting radiative losses through X-ray emission. This mechanism prevents the ICM from rapidly cooling down and fueling extreme starburst activity as it accretes onto the central galaxies, and is therefore a key ingredient in the evolution of galaxy clusters. However, the influence and mode of feedback at high redshifts (z~1) r…

Ultrafast dynamics of a fermion chain in a terahertz field-driven optical cavity
Mohsen Yarmohammadi, John Sous, Marin Bukov, Michael H. Kolodrubetz
https://arxiv.org/abs/2402.12591

Ultrafast dynamics of a fermion chain in a terahertz field-driven optical cavity
We study the effect of a terahertz field-driven single cavity mode for ultrafast control of a fermion chain with dissipation-induced nonlinearity and quadratic coupling to an infrared-active phonon mode. Without photon loss from the cavity, we uncover a first-order phase transition in the nonequilibrium steady state only for the lower phonon-polariton, accompanied by polaritons whose frequency response is asymmetric with respect to the photon frequency due to the direct laser-induced dressing e…

Sliding Mode Observers for Set-valued Lur'e Systems with Uncertainties Beyond Observational Range
Samir Adly, Jun Huang, Ba Khiet Le
https://arxiv.org/abs/2402.06139

Sliding Mode Observers for Set-valued Lur'e Systems with Uncertainties Beyond Observational Range
In this paper, we introduce a new approximate sliding mode observer for Lur'e set-valued dynamical systems, particularly addressing challenges posed by uncertainties not within the standard range of observation. Traditionally, Luenberger-like observers and sliding mode observer have been designed only for uncertainties in the range of observation. Central to our approach is the treatment of the uncertainty term which we decompose into two components: the first part in the observation subspace a…

This https://arxiv.org/abs/2306.08347 has been replaced.
initial toot: https://mastoxiv.page/@a…

Superconductivity in unconventional metals
Based on first-principles calculations, we demonstrate that 1H/2H-phase transition metal dichalcogenides MX2 (M=Nb,Ta; X=S,Se,Te) are unconventional metals, which have an empty-site band of $A_1'@1e$ elementary band representation at the Fermi level. The computed phonon dispersions indicate the stability of the system at high temperatures, while the presence of the soft phonon mode suggests a phase transition to the charge density wave state at low temperatures. Based on the Bardeen-Cooper-Schr…

Dynamic Mode Decomposition with Non-uniform Sampling
Ramachandran Anantharaman, Alexandre Mauroy
https://arxiv.org/abs/2404.07133 https://

Dynamic Mode Decomposition with Non-uniform Sampling
Dynamic Mode Decomposition (DMD) and its extensions (EDMD) have been at the forefront of data-based approaches to Koopman operators. Most (E)DMD algorithms assume that the entire state is sampled at a uniform sampling rate. In this paper, we provide an algorithm where the entire state is not uniformly sampled, with individual components of the states measured at individual (but known) sampling rates. We propose a two-step DMD algorithm where the first step performs Hankel DMD on individual stat…

This https://arxiv.org/abs/2310.19044 has been replaced.
initial toot: https://mastoxiv.page/@ar…

Wall modes and the transition to bulk convection in rotating Rayleigh-Bénard convection
We investigate states of rapidly rotating Rayleigh-Bénard convection in a cylindrical cell over a range of Rayleigh number $3\times10^5\leq Ra \leq 5\times10^{9}$ and Ekman number $10^{-6} \leq Ek \leq 10^{-4}$ for Prandtl number $Pr = 0.8$ and aspect ratios $1/5 \leq Γ\leq 5$ using direct numerical simulations. We characterize, for perfectly insulating sidewall boundary conditions, the first transition to convection via wall mode instability and the nonlinear growth and instability of the re…

23.8 GHz Acoustic Filter in Periodically Poled Piezoelectric Film Lithium Niobate with 1.52 dB IL and 19.4% FBW
Sinwoo Cho, Omar Barrera, Jack Kramer, Vakhtang Chulukhadze, Tzu-Hsuan Hsu, Joshua Campbell, Ian Anderson, Ruochen Lu
https://arxiv.org/abs/2402.12194

23.8 GHz Acoustic Filter in Periodically Poled Piezoelectric Film Lithium Niobate with 1.52 dB IL and 19.4% FBW
This paper reports the first piezoelectric acoustic filter in periodically poled piezoelectric film (P3F) lithium niobate (LiNbO3) at 23.8 GHz with low insertion loss (IL) of 1.52 dB and 3-dB fractional bandwidth (FBW) of 19.4%. The filter features a compact footprint of 0.64 mm2. The third-order ladder filter is implemented with electrically coupled resonators in 150 nm bi-layer P3F 128 rotated Y-cut LiNbO3 thin film, operating in second-order symmetric (S2) Lamb mode. The record-breaking perf…

This https://arxiv.org/abs/2308.15886 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_grqc_…

Non-linear Black Hole Ringdowns: an Analytical Approach
Due to the nature of gravity, non-linear effects are left imprinted in the quasi-normal modes generated in the ringdown phase of the merger of two black holes. We offer an analytical treatment of the quasi-normal modes at second-order in black hole perturbation theory which takes advantage from the fact that the non-linear sources are peaked around the light ring. As a byproduct, we describe why the amplitude of the second-order mode relative to the square of the first-order amplitude depends o…

Tokamak H-mode edge-SOL global turbulence simulations with an electromagnetic, transcollisional drift-fluid model
W. Zholobenko, K. Zhang, A. Stegmeir, J. Pfennig, K. Eder, C. Pitzal, P. Ulbl, M. Griener, L. Radovanovic, U. Plank, ASDEX Upgrade Team
https://arxiv.org/abs/2403.10113

Tokamak H-mode edge-SOL global turbulence simulations with an electromagnetic, transcollisional drift-fluid model
The design of commercially feasible magnetic confinement fusion reactors strongly relies on the reduced turbulent transport in the plasma edge during operation in the high confinement mode (H-mode). We present first global turbulence simulations of the ASDEX Upgrade tokamak edge and scrape-off layer (SOL) in ITER baseline H-mode conditions. Reasonable agreement with the experiment is obtained for outboard mid-plane measurements of plasma density, electron and ion temperature, as well as the rad…

Magnetic-field driven evolution of zero-energy mode on Bi islands deposited on Fe(Te,Se)
Kailun Chen, Chuanhao Wen, Zhiyong Hou, Huan Yang, Hai-Hu Wen
https://arxiv.org/abs/2404.12708

Magnetic-field driven evolution of zero-energy mode on Bi islands deposited on Fe(Te,Se)
We investigate the magnetic-field dependent evolution of the zero-bias conductance peaks (ZBCPs) on the nanoscale bismuth islands grown on the FeTe$_{0.55}$Se$_{0.45}$ substrate. The ZBCPs can be observed throughout the entire region on these islands, and their characteristics align with the signatures of Majorana zero modes. Remarkably, the evolution of ZBCPs on these islands exhibits anomalous behavior under varying magnetic fields: The magnitude of ZBCPs is first enhanced at weak fields lowe…

Using Bright-Point Shapes to Constrain Wave-Heating of the Solar Corona: Predictions for DKIST
Samuel J. Van Kooten, Steven R. Cranmer
https://arxiv.org/abs/2402.10915

Using Bright-Point Shapes to Constrain Wave-Heating of the Solar Corona: Predictions for DKIST
Magnetic bright points on the solar photosphere mark the footpoints of kilogauss magnetic flux tubes extending toward the corona. Convective buffeting of these tubes is believed to excite magnetohydrodynamic waves, which can propagate to the corona and there deposit heat. Measuring wave excitation via bright-point motion can thus constrain coronal and heliospheric models, and this has been done extensively with centroid tracking, which can estimate kink-mode wave excitation. DKIST is the first …

Mode Consensus Algorithms With Finite Convergence Time
Chao Huang, Hyungbo Shim, Siliang Yu, Brian D. O. Anderson
https://arxiv.org/abs/2403.00221 https://…

Mode Consensus Algorithms With Finite Convergence Time
This paper studies the distributed mode consensus problem in a multi-agent system, in which the agents each possess a certain attribute and they aim to agree upon the mode (the most frequent attribute owned by the agents) via distributed computation. Three algorithms are proposed. The first one directly calculates the frequency of all attributes at every agent, with protocols based on blended dynamics, and then returns the most frequent attribute as the mode. Assuming knowledge at each agent of…

This https://arxiv.org/abs/2310.06729 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_…

CMB-S4: Iterative Internal Delensing and $r$ Constraints
The tightest constraints on the tensor-to-scalar ratio $r$ can only be obtained after removing a substantial fraction of the lensing $B$-mode sample variance. The planned CMB-S4 experiment will remove the lensing $B$-mode signal internally by reconstructing the gravitational lenses from high-resolution observations. We document here a first lensing reconstruction pipeline able to achieve this optimally for arbitrary sky coverage. We make it part of a map-based framework to test CMB-S4 delensing…

This https://arxiv.org/abs/2308.15886 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_grqc_…

Non-linear Black Hole Ringdowns: an Analytical Approach
Due to the nature of gravity, non-linear effects are left imprinted in the quasi-normal modes generated in the ringdown phase of the merger of two black holes. We offer an analytical treatment of the quasi-normal modes at second-order in black hole perturbation theory which takes advantage from the fact that the non-linear sources are peaked around the light ring. As a byproduct, we describe why the amplitude of the second-order mode relative to the square of the first-order amplitude depends o…

Correlation and Spectral Density Functions in Mode-Stirred Reverberation -- I. Theory
Luk R. Arnaut
https://arxiv.org/abs/2404.02347 https://

Correlation and Spectral Density Functions in Mode-Stirred Reverberation -- I. Theory
Auto- and cross-spectral density functions for dynamic {random} fields and power are derived. These are based on first- and second-order Padé approximants of correlation functions expanded in terms of spectral moments. The second-order approximant permits a characterization of stir noise observable {at high stir frequencies in the autospectral density}. A relationship between stir imperfection and spectral kurtosis is established. For the latter, lower bounds are established. A novel alternati…

Radiative loss and ion-neutral collisional effects in astrophysical plasmas
Beatrice Popescu Braileanu, Rony Keppens
https://arxiv.org/abs/2403.11900 https…

Radiative loss and ion-neutral collisional effects in astrophysical plasmas
In this paper we study the role of radiative cooling in a two-fluid model consisting of coupled neutrals and charged particles. We first analyze the linearized two-fluid equations where we include radiative losses in the energy equation for the charged particles. In a 1D geometry for parallel propagation and in the limiting cases of weak and strong coupling, it can be shown analytically that the instability conditions for the thermal mode and the sound waves, the isobaric and isentropic criteri…

J/psi-pair production at NLL in TMD factorisation at the LHC
Alice Colpani Serri, Jelle Bor, Daniel Boer, Jean-Philippe Lansberg
https://arxiv.org/abs/2403.00640

J/psi-pair production at NLL in TMD factorisation at the LHC
J/psi-pair production at the LHC is currently one of the few tools available to probe gluon transverse momentum distributions (TMDs). In this context, data from LHCb in the collider mode have the potential to probe the evolution of the unpolarised-gluon TMDs and to measure the distribution of the linearly-polarised gluon in unpolarised protons for the first time. In this proceedings contribution, improved predictions obtained for the LHC (at sqrt(s) = 13 TeV) up to next-to-leading logarithm (NL…

User Localization with HRIS and Backscatter Modulation for Next-Generation Networks
Mattia Piana, Stefano Tomasin
https://arxiv.org/abs/2403.00568 https://…

User Localization with HRIS and Backscatter Modulation for Next-Generation Networks
Hybrid reflective intelligent surfaces (HRISs) can support localization in sixth-generation (6G) networks thanks to their ability to generate narrow beams and at the same time receive and process locally the impinging signals. In this paper, we propose a novel protocol for user localization in a network with an HRIS. The protocol includes two steps. In the first step, the HRIS operates in full absorption mode and the user equipment (UE) transmits a signal that is locally processed at the HRIS t…

This https://arxiv.org/abs/2309.17331 has been replaced.
initial toot: https://mastoxiv.page/@ar…

Identifiability Study of Lithium-Ion Battery Capacity Fade Using Degradation Mode Sensitivity for a Minimally and Intuitively Parametrized Electrode-Specific Cell Open-Circuit Voltage Model
When two electrode open-circuit potentials form a full-cell OCV (open-circuit voltage) model, cell-level SOH (state of health) parameters related to LLI (loss of lithium inventory) and LAM (loss of active materials) naturally appear. Such models have been used to interpret experimental OCV measurements and infer these SOH parameters associated with capacity fade. In this work, we first re-parametrize a popular OCV model formulation by the N/P (negative-to-positive) ratio and Li/P (lithium-to-po…

Global gyrokinetic analysis of Wendelstein 7-X discharge: unveiling the importance of trapped-electron-mode and electron-temperature-gradient turbulence
Felix Wilms, Alejandro Ba\~n\'on Navarro, Thomas Windisch, Sergey Bozhenkov, Felix Warmer, Golo Fuchert, Oliver Ford, Daihong Zhang, Torsten Stange, Frank Jenko, the W7-X Team
https://

Global gyrokinetic analysis of Wendelstein 7-X discharge: unveiling the importance of trapped-electron-mode and electron-temperature-gradient turbulence
We present the first nonlinear, gyrokinetic, radially global simulation of a discharge of the Wendelstein 7-X-like stellarator (W7-X), including kinetic electrons, an equilibrium radial electric field, as well as electromagnetic and collisional effects. By comparison against flux-tube and full-flux-surface simulations, we assess the impact of the equilibrium ExB-flow and flow shear on the stabilisation of turbulence. In contrast to the existing literature, we further provide substantial evidenc…

Realization of Planar Optical Tweezer (2D-LOT) Powered by Light Sheet
Neptune Baro, Partha Pratim Mondal
https://arxiv.org/abs/2404.10265 https://

Realization of Planar Optical Tweezer (2D-LOT) Powered by Light Sheet
We report the realization of the first planar optical tweezer trap system by a sheet of light. To visualize the trapping of the target object (dielectric bead or live cell) in a plane, an orthogonal widefield detection is employed. The planar / two-dimensional lightsheet optical tweezer (2D-LOT) sub-system is realized in an inverted microscopy mode with illumination from the bottom. A 1064 nm laser (power $\sim 500 mW$) is expanded and directed to a combination of cylindrical lens and high NA o…

Variable stars in galactic globular Clusters I. The population of RR Lyrae stars
Mauricio Cruz Reyes, Richard I. Anderson, Lucas Johansson, Henryka Netzel, Zo\'e Medaric
https://arxiv.org/abs/2402.08843

Variable stars in galactic globular Clusters I. The population of RR Lyrae stars
We present a comprehensive catalog of 2824 RR Lyrae stars (RRLs) residing in 115 Galactic globular clusters (GCs). Our catalog includes 1594 fundamental-mode (RRab), 824 first-overtone (RRc), and 28 double-mode (RRd) RRLs, as well as 378 RRLs of an unknown pulsation mode. We cross-matched 481349 RRLs reported in the third data release (DR3) of the ESA mission Gaia and the literature to 170 known GCs. Membership probabilities were computed as the products of a position and shape-dependent prior …

This https://arxiv.org/abs/2403.18673 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_grqc_…

Unveiling the inconsistency of the Proca theory with non-minimal coupling to gravity
We study the degrees of freedom of the Proca theory, non-minimally coupled to gravity. In the Minkowski background, this theory propagates five degrees of freedom - a massive longitudinal mode, two massive vector ones, and two massless tensor modes. At first sight, the non-linear coupling between the metric perturbations and the vector field indicates that both longitudinal and tensor modes become strongly coupled, at the same scale. This would imply that no matter how small the photon mass is …

Incompleteness of Sinclair-type continuum flexible boundary conditions for atomistic fracture simulations
Julian Braun, Maciej Buze
https://arxiv.org/abs/2403.05462

Incompleteness of Sinclair-type continuum flexible boundary conditions for atomistic fracture simulations
The elastic field around a crack opening is known to be described by continuum linearised elasticity in leading order. In this work, we explicitly develop the next term in the atomistic asymptotic expansion in the case of a Mode III crack in anti-plane geometry. The aim of such an expansion is twofold. First, we show that the well-known flexible boundary condition ansatz due to Sinclair is incomplete, meaning that, in principle, employing it in atomistic fracture simulations is no better than u…

Reaching Curzon-Ahlborn limit in linear response and Whitney limit in nonlinear response in edge mode quantum thermoelectrics and refrigeration
Sachiraj Mishra, Colin Benjamin
https://arxiv.org/abs/2404.02118

Reaching Curzon-Ahlborn limit in linear response and Whitney limit in nonlinear response in edge mode quantum thermoelectrics and refrigeration
Quantum heat engines and quantum refrigerators are proposed in three-terminal quantum Hall (QH) and quantum spin Hall (QSH) setups with a voltage-temperature probe in linear and nonlinear transport regimes. In the linear response regime, we find that efficiency at maximum power approaches the Curzon-Ahlborn limit in both QH and QSH setups. Similarly, in nonlinear response, we find that efficiency at maximum power reaches the Whitney bounds. For the first time, we see that the thermoelectric eff…

Effect of electron-phonon coupling on thermal transport in metals: a Monte Carlo approach for solving the coupled electron-phonon Boltzmann transport equations
Jie Peng, W. Ryan Deskins, Maria Helena Braga, Anter El-Azab
https://arxiv.org/abs/2402.08150

Effect of electron-phonon coupling on thermal transport in metals: a Monte Carlo approach for solving the coupled electron-phonon Boltzmann transport equations
In this work, the effect of electron-phonon (e-ph) coupling on both electron and phonon transport of metals is investigated via first principles calculations. A Monte-Carlo (MC) approach for solving the coupled electron-phonon Boltzmann transport equations is developed to investigate thermal conductivity of metals. In this approach, the anisotropic electron band structure, phonon dispersion in the full Brillouin zone, and mode-dependent thermal relaxation time of electrons and phonons are calcu…

Stellar Variability and Distance Indicators in the Near-infrared in Nearby Galaxies. I. RR Lyrae and Anomalous Cepheids in Draco dwarf spheroidal
Anupam Bhardwaj, Marina Rejkuba, Chow-Choong Ngeow, Marcella Marconi, Vincenzo Ripepi, Abhinna Sundar Samantaray, Harinder P. Singh
https://arxiv.org/abs/2404.01394

Stellar Variability and Distance Indicators in the Near-infrared in Nearby Galaxies. I. RR Lyrae and Anomalous Cepheids in Draco dwarf spheroidal
Draco dwarf Spheroidal galaxy (dSph) is one of the nearest and the most dark matter dominated satellites of the Milky Way. We obtained multi-epoch near-infrared (NIR, $JHK_s$) observations of the central region of Draco dSph covering a sky area of $\sim 21'\times21'$ using the WIRCam instrument at the 3.6-m Canada-France-Hawaii Telescope. Homogeneous $JHK_s$ time-series photometry for 212 RR Lyrae (173 fundamental-mode, 24 first-overtone, and 15 mixed-mode variables) and 5 Anomalous Cepheids in…

This https://arxiv.org/abs/2312.11048 has been replaced.
link: https://scholar.google.com/scholar?q=a

Quasinormal Mode Expansion Method for Resonators with Partial-fraction Material Dispersion
In this paper, we first establish a Quasinormal Mode (QNM) solver for open resonators made of materials with general dispersion which can be modeled by partial fractions, and develop the corresponding analytical QNM expansion method (QNMEM) for both discrete and periodic resonant structures. When the response of the resonators is dominant by several leading QNMs, a simplified QNMEM can be used to analyze their spectra in a reasonable accuracy. The simplified QNMEM is used to analyze the spectra…

Light-driven interlayer propagation of collective-mode excitations in layered superconductors
Niklas Ziereis, Kazuaki Takasan, Naoto Tsuji
https://arxiv.org/abs/2403.08734

Light-driven interlayer propagation of collective-mode excitations in layered superconductors
Superconductors exhibit a nonlinear interaction with an applied light, which can resonantly excite the collective amplitude (Higgs) mode. Here we study light-induced dynamics of layered superconductors, where each layer is coupled to adjacent layers via the Josephson coupling and the first few layers near the surface are driven by an in-plane-polarized light. We study the system under the assumption that the interlayer Coulomb interactions are sufficiently screened out and that the phase-differ…

This https://arxiv.org/abs/2403.18673 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_grqc_…

Unveiling the inconsistency of the Proca theory with non-minimal coupling to gravity
We study the degrees of freedom of the Proca theory, non-minimally coupled to gravity. In the Minkowski background, this theory propagates five degrees of freedom - a massive longitudinal mode, two massive vector ones, and two massless tensor modes. At first sight, the non-linear coupling between the metric perturbations and the vector field indicates that both longitudinal and tensor modes become strongly coupled, at the same scale. This would imply that no matter how small the photon mass is …

This https://arxiv.org/abs/2403.02250 has been replaced.
link: https://scholar.google.com/scholar?q=a

Direct Imaging of Magnetohydrodynamic Wave Mode Conversion Near a 3D Null Point on the Sun
Mutual conversion of various kinds of magnetohydrodynamic (MHD) waves can have profound impacts on wave propagation, energy transfer, and heating of the solar chromosphere and corona. Mode conversion occurs when an MHD wave travels through a region where the Alfvén and sound speeds are equal (e.g., a 3D magnetic null point). Here we report the first EUV imaging of mode conversion from a fast-mode to a slow-mode MHD wave near a 3D null point using Solar Dynamics Observatory/Atmospheric Imaging …

This https://arxiv.org/abs/2309.17331 has been replaced.
initial toot: https://mastoxiv.page/@ar…

Identifiability Study of Lithium-Ion Battery Capacity Fade Using Degradation Mode Sensitivity for a Minimally and Intuitively Parametrized Electrode-Specific Cell Open-Circuit Voltage Model
When two electrode open-circuit potentials form a full-cell OCV (open-circuit voltage) model, cell-level SOH (state of health) parameters related to LLI (loss of lithium inventory) and LAM (loss of active materials) naturally appear. Such models have been used to interpret experimental OCV measurements and infer these SOH parameters associated with capacity fade. In this work, we first re-parametrize a popular OCV model formulation by the N/P (negative-to-positive) ratio and Li/P (lithium-to-po…

This https://arxiv.org/abs/2312.05216 has been replaced.
initial toot: https://mastoxiv.page/@a…

Kinetic-Ballooning-Bifurcation in Tokamak Pedestals Across Shaping and Aspect-Ratio
We use a new gyrokinetic threshold model to predict a bifurcation in tokamak pedestal width-height scalings that depends strongly on plasma shaping and aspect-ratio. The bifurcation arises from the first and second stability properties of kinetic-ballooning-modes that yields wide and narrow pedestal branches, expanding the space of accessible pedestal widths and heights. The wide branch offers potential for edge-localized-mode-free pedestals with high core pressure. For negative triangularity, …

Kaleidoscope of irradiated disks: MUSE observations of proplyds in the Orion Nebula Cluster. I. Sample presentation and ionization front sizes
Mari-Liis Aru, K. Mauco, C. F. Manara, T. J. Haworth, S. Facchini, A. F. McLeod, A. Miotello, M. G. Petr-Gotzens, M. Robberto, G. P. Rosotti, S. Vicente, A. Winter, M. Ansdell
https://arx…

Kaleidoscope of irradiated disks: MUSE observations of proplyds in the Orion Nebula Cluster. I. Sample presentation and ionization front sizes
In the Orion Nebula Cluster (ONC), protoplanetary disks exhibit ionized gas clouds in the form of a striking teardrop shape as massive stars irradiate the disk material. We present the first spatially and spectrally resolved observations of 12 proplyds, using Integral Field Spectroscopy observations performed with the MUSE instrument in Narrow Field Mode (NFM) on the VLT. We present the morphology of the proplyds in seven emission lines and measure the radius of the ionization front of the targ…

This https://arxiv.org/abs/2312.11048 has been replaced.
link: https://scholar.google.com/scholar?q=a

Quasinormal Mode Expansion Method for Resonators with Partial-fraction Material Dispersion
In this paper, we first establish a Quasinormal Mode (QNM) solver for open resonators made of materials with general dispersion which can be modeled by partial fractions, and develop the corresponding analytical QNM expansion method (QNMEM) for both discrete and periodic resonant structures. When the response of the resonators is dominant by several leading QNMs, a simplified QNMEM can be used to analyze their spectra in a reasonable accuracy. The simplified QNMEM is used to analyze the spectra…

Determining stellar accretion rates from $Pa_{\alpha}$ and $Br_{\beta}$ emission lines with JWST NIRSpec
Ciar\`an Rogers, Guido de Marchi, Bernhard Brandl
https://arxiv.org/abs/2403.09568

Determining stellar accretion rates from $Pa_α$ and $Br_β$ emission lines with JWST NIRSpec
In this letter we present the first systematic spectroscopic measurements of the Near-InfraRed (NIR) hydrogen recombination lines $Pa_α$ ($λ= 1.875 μm$) and $Br_β$ ($λ= 2.626 μm$), produced by pre-main sequence (PMS) stars. These stars, consisting of T Tauri and Herbig AeBe stars are located in the massive Galactic star-formation region NGC 3603. The measurements were obtained from JWST NIRSpec, using multi-object spectroscopy (MOS) mode. Utilising existing empirical relations between $L_…

Observation of Replica Symmetry Breaking in Standard Mode-Locked Fiber Laser
Nicolas P. Alves, Wesley F. Alves, Andr\'e C. A. Siqueira, Naudson L. L. Matias, Anderson S. L. Gomes, Ernesto P. Raposo, Marcio H. G. de Miranda
https://arxiv.org/abs/2403.02477

Observation of Replica Symmetry Breaking in Standard Mode-Locked Fiber Laser
We report the first experimental demonstration of the replica symmetry breaking (RSB) phenomenon in a fiber laser system supporting standard mode-locking (SML) regime. Though theoretically predicted, this photonic glassy phase remained experimentally undisclosed so far. We employ an ytterbium-based mode-locked fiber laser with a very rich phase diagram. Two phase transitions are observed separating three different regimes: cw, quasi-mode-locking (QML), and SML. The regimes are intrinsically rel…

Analytic solutions for the linearized first-order magnetohydrodynamics and implications for causality and stability
Zhe Fang, Koichi Hattori, Jin Hu
https://arxiv.org/abs/2402.18601

Analytic solutions for the linearized first-order magnetohydrodynamics and implications for causality and stability
We solve the first-order relativistic magnetohydrodynamics (MHD) within the linear-mode analysis performed near an equilibrium configuration in the fluid rest frame. We find two complete sets of analytic solutions for the four and two coupled modes with seven dissipative transport coefficients. The former set has been missing in the literature for a long time. Our method provides a simple and general algorithm for the solution search on an order-by-order basis in the derivative expansion, and c…

The influence of different coronal hole geometries on simulations of coronal wave - coronal hole interaction
I. Piantschitsch, J. Terradas, E. Soubrie, S. G. Heinemann, S. J. Hofmeister, R. Soler, M. Temmer
https://arxiv.org/abs/2403.06614

The influence of different coronal hole geometries on simulations of coronal wave - coronal hole interaction
The geometry of a coronal hole (CH) affects the density profile of the reflected part of an incoming global coronal wave (CW). In this study, we perform for the first time magnetohydrodynamic (MHD) simulations of fast-mode MHD waves interacting with CHs of different geometries, such as circular, elliptic, convex, and concave shapes. We analyse the influence these geometries have on the density profiles of the reflected waves and we generate the corresponding simulation-based time-distance plots…

The influence of different coronal hole geometries on simulations of coronal wave - coronal hole interaction
I. Piantschitsch, J. Terradas, E. Soubrie, S. G. Heinemann, S. J. Hofmeister, R. Soler, M. Temmer
https://arxiv.org/abs/2403.06614

The influence of different coronal hole geometries on simulations of coronal wave - coronal hole interaction
The geometry of a coronal hole (CH) affects the density profile of the reflected part of an incoming global coronal wave (CW). In this study, we perform for the first time magnetohydrodynamic (MHD) simulations of fast-mode MHD waves interacting with CHs of different geometries, such as circular, elliptic, convex, and concave shapes. We analyse the influence these geometries have on the density profiles of the reflected waves and we generate the corresponding simulation-based time-distance plots…