Tootfinder

STM32MP2 update: seems like running components at Fmax using odd clock dividers is problematic, I'm measuring about a 45% duty cycle on MCO in some of my testing.
Was having a bit of instability that mostly seems to have gone away when I doubled the PLL multiplier and the output divider so I'm generating 400 MHz for the M33 as 2400/6 rather than 1200/3.

MaP: A Unified Framework for Reliable Evaluation of Pre-training Dynamics
Jiapeng Wang, Changxin Tian, Kunlong Chen, Ziqi Liu, Jiaxin Mao, Wayne Xin Zhao, Zhiqiang Zhang, Jun Zhou
https://arxiv.org/abs/2510.09295

MaP: A Unified Framework for Reliable Evaluation of Pre-training Dynamics
Reliable evaluation is fundamental to the progress of Large Language Models (LLMs), yet the evaluation process during pre-training is plagued by significant instability that obscures true learning dynamics. In this work, we systematically diagnose this instability, attributing it to two distinct sources: \textit{Parameter Instability} from training stochasticity and \textit{Evaluation Instability} from noisy measurement protocols. To counteract both sources of noise, we introduce \textbf{MaP}, …

Ergoregion instability in bosonic stars: scalar mode structure, universality, and weakly nonlinear effects
Nils Siemonsen
https://arxiv.org/abs/2510.07468 https://

Ergoregion instability in bosonic stars: scalar mode structure, universality, and weakly nonlinear effects
Ultracompact spinning horizonless spacetimes with ergoregions are subject to the ergoregion instability. We systematically investigate the instability of a massless scalar field in a variety of rapidly spinning Proca stars and boson stars using WKB-, frequency-, and time-domain methods. We find universal features in the mode structure: the onset of the instability is signaled by a zero-mode, the mode frequencies and growth rates are related by a simple scaling relation in the small-frequency li…

Nonlinear instability for the 3D MHD equations around the Taylor-Couette flow
V\'ictor Navarro-Fern\'andez, David Villringer
https://arxiv.org/abs/2510.12707 https://

Nonlinear instability for the 3D MHD equations around the Taylor-Couette flow
We study the 3D magnetohydrodynamics (MHD) equations in an annular cylinder, perturbed around the explicit steady state given by the 3D Taylor-Couette velocity field and zero magnetic field. Combining a recent linear instability result for the magnetic field with the framework of Friedlander, Pavlović and Shvydkoy [Comm. Math. Phys. 264 (2006), no. 2, 335-347], we prove nonlinear instability of the solution around this steady state in $L^p$, for any $p>1$. In particular, our results are, to th…

The ZZ Ceti Instability Strip for The Most Massive White Dwarf Pulsators
Gracyn Jewett, Mukremin Kilic, Adam Moss, Alejandro H. C\'orsico, Matthew J. Green, Murat Uzundag, Pierre Bergeron, Warren R. Brown, Francisco C. De Ger\'onimo, Alberto Rebassa-Mansergas, Alex J. Brown, Vikram S. Dhillon, Stuart Littlefair
https://arxiv.org/ab…

The ZZ Ceti Instability Strip for The Most Massive White Dwarf Pulsators
We present time-series photometry of 31 massive DA white dwarfs with $M\gtrsim 0.9~M_\odot$ within the ZZ Ceti instability strip from the Montreal White Dwarf Database 100 pc sample. The majority of the targets had no previous time-series photometry available, though several were classified as non-variable or potential pulsators in the literature. Out of the 31 candidates, we confirm 16 as pulsating. Our observations at three observatories have led us to discover the most massive pulsating whit…

Hydrodynamic properties in soliton field theory
Qian Chen
https://arxiv.org/abs/2510.11244 https://arxiv.org/pdf/2510.11244

Hydrodynamic properties in soliton field theory
The crucial role of hydrodynamic instabilities in soliton field theory is revealed. We demonstrate that the essential of soliton formation mechanism is the sound mode instability induced by thermodynamic instability. This instability triggers phase separation, where new thermal phases are generated to produce solitons. These solitons can be regarded as a coexistence state composed of a matter phase and a vacuum phase, with an interface proving surface tension to maintain dynamical equilibrium. …

Spin and Obliquity Distributions of Low-mass Planets Shaped by Dynamical Instability
Dieran Wang (TDLI), Jiaru Li (CIERA), Dong Lai (TDLI, Cornell)
https://arxiv.org/abs/2510.11785

Spin and Obliquity Distributions of Low-mass Planets Shaped by Dynamical Instability
Exoplanetary systems hosting multiple low-mass planets are thought to have experienced dynamical instability, during which planet-planet collisions and mergers occur; these collisions can impart substantial amount of angular momentum to the merger remnants, changing the obliquities of the resulting planets significantly. In this work, we carry out a series of $N$-body experiments to investigate the spin magnitude $(|\vec{S}|)$ and obliquity $(θ_{\rm SL})$ distributions of low-mass ex…

Luminous Fast Blue Optical Transients as "Failed" Gravitational Wave Sources: Helium Core$-$Black Hole Mergers Following Delayed Dynamical Instability
Jakub Klencki, Brian D. Metzger
https://arxiv.org/abs/2510.09745

Luminous Fast Blue Optical Transients as "Failed" Gravitational Wave Sources: Helium Core$-$Black Hole Mergers Following Delayed Dynamical Instability
Binaries in which a massive donor star undergoes an extended ($\gtrsim$ kyr) phase of stable mass transfer onto a black hole (BH) accretor offer a promising channel for creating LIGO gravitational wave sources. However, in many systems the mass transfer terminates prematurely in a dynamical instability at orbital periods of a few days, culminating in the BH plunging into the donor and potentially disrupting and accreting its helium core at highly super-Eddington rates. Combining a suite of bina…

The corruption was weird af tho
What the fuck?
I do have a journalctl log but I couldn’t really find the reason everything failed on it.

Transverse instability of hybrid solitons in the strong light-matter coupling regime
Alexey V. Yulin, Dmitry A. Zezyulin
https://arxiv.org/abs/2510.06977 https://

Transverse instability of hybrid solitons in the strong light-matter coupling regime
We investigate the transverse instability of two-component solitons forming in a planar waveguide operating in the regime of strong light-matter coupling. The instability emerges as a result of the coupling between transverse diffraction of the photonic component and nonlinearity of the material excitations. Solutions of three different forms are addressed which include bright, gray-dark, and gray-gray solitons. In the limit of long-wavelength transverse perturbations, the instability is descri…

"EU-US Data Transfers: Time to prepare for more trouble to come", #maxschrems…

EU-US Data Transfers: Time to prepare for more trouble to come
As instability in the US legal system becomes undeniable and the US shows open signs of hostility towards the EU, it is time to reconsider where our data is flowing

Investigating the Lower Hybrid Drift Instability in Reconnecting Current Sheets Using a Hybrid Kinetic Model (ssV Code)
S. Thatikonda, F. N. De Oliveira-Lopes, A. Mustonen, K. Pommois, D. Told, F. Jenko
https://arxiv.org/abs/2510.05912

Investigating the Lower Hybrid Drift Instability in Reconnecting Current Sheets Using a Hybrid Kinetic Model (ssV Code)
We investigate the nonlinear evolution of the lower hybrid drift instability (LHDI) in reconnecting current sheets using a hybrid kinetic simulation model implemented in the Super Simple Vlasov (ssV) code. The model treats ions kinetically and electrons with a drift-kinetic approximation, solving self-consistent coupled electrostatic and electromagnetic fields. A parametric study explores the effects of mass ratio, temperature ratio, plasma beta, and sheet thickness. In electrostatic cases, LHD…

Phase Transitions Without Instability: A Universal Mechanism from Non-Normal Dynamics
Virgile Troude, Didier Sornette
https://arxiv.org/abs/2510.07938 https://

Phase Transitions Without Instability: A Universal Mechanism from Non-Normal Dynamics
We identify a new universality class of phase transitions that arises in non-normal systems, challenging the classical view that transitions require eigenvalue instabilities. In traditional bifurcation theory, critical phenomena emerge when spectral stability is lost; here, we show that transitions can occur even when all equilibria are spectrally stable. The key mechanism is the transient amplification induced by non-orthogonal eigenvectors: noise-driven dynamics are enhanced not by lowering e…

Is the transition to unsteadiness in the wake of slender bodies an artefact of boundary conditions ?
David Fabre
https://arxiv.org/abs/2510.11880 https://a…

Is the transition to unsteadiness in the wake of slender bodies an artefact of boundary conditions ?
This work considers the transition to unsteadiness in the wake of 2D slender bodies, and questions the relevance of the generally accepted scenario involving a region of absolute instability within the near wake. The case of a thin plate at zero incidence is first considered. Despite the absence of absolute instability region, global stability analysis reveals the existence of numerous unstable eigenvalues organized along a characteristic "arc-branch" whose properties significantly depends upon…

Weakly turbulent saturation of the nonlinear scalar ergoregion instability
Nils Siemonsen
https://arxiv.org/abs/2510.07467 https://arxiv.org/pdf/2510.07467…

Weakly turbulent saturation of the nonlinear scalar ergoregion instability
We perform time-domain evolutions of the ergoregion instability on a horizonless spinning ultracompact spacetime in scalar theories with potential-type and derivative self-interactions mimicking the nonlinear structure of the Einstein equations. We find that the instability saturates by triggering a weakly turbulent direct cascade, which transfers energy from the most unstable and large-scale modes to small scales. The cascade's nonlinear timescales of each mode are orders of magnitude shorter …

When men drink, women and children pay the price #health

When men drink, women and children pay the price
Men’s heavy drinking is fueling a hidden crisis affecting millions of women and children worldwide. The harms, from violence to financial instability, are especially severe where gender inequality is high. Experts warn that alcohol policies must include gender-responsive strategies to protect vulnerable families. They call for reforms combining regulation, prevention, and community action.

Higher-order epitaxy: A pathway to suppressing structural instability and emergent superconductivity
Yuki Sato, Soma Nagahama, Shunsuke Kitou, Hajime Sagayama, Ilya Belopolski, Ryutaro Yoshimi, Minoru Kawamura, Atsushi Tsukazaki, Naoya Kanazawa, Takuya Nomoto, Ryotaro Arita, Taka-hisa Arima, Masashi Kawasaki, Yoshinori Tokura
https://arxiv…

Higher-order epitaxy: A pathway to suppressing structural instability and emergent superconductivity
Molecular beam epitaxy enables the growth of thin film materials with novel properties and functionalities. Typically, the lattice constants of films and substrates are designed to match to minimise disorders and strains. However, significant lattice mismatches can result in higher-order epitaxy, where commensurate growth occurs with a period defined by integer multiples of the lattice constants. Despite its potential, higher-order epitaxy is rarely used to enhance material properties or induce…

Active Rosensweig Patterns
Carlo Rigoni, Max Philipp Holl, Alberto Scacchi, Emil Str{\aa}ka, Fereshteh Sohrabi, Mikko P. Haataja, Maria Sammalkorpi, Jaakko V. I. Timonen
https://arxiv.org/abs/2510.09099

Active Rosensweig Patterns
Ferrofluids, colloidal dispersions of magnetic nanoparticles, are renowned for pattern formation like few other materials. The Rosensweig instability of a horizontal ferrofluid-air interface in perpendicular magnetic field is especially well known classically, this instability sets the air-ferrofluid interface into an array of spikes that correspond to a new free energy minimum of the system. However, once the pattern is formed, it does not exhibit any notable thermal or non-equilibrium fluctua…

A laser with instability reaching $4 \times 10^{-17}$ based on a 10-cm-long silicon cavity at sub-5-K temperatures
Zhi-Ang Chen, Hao-Ran Zeng, Wen-Wei Wang, Han Zhang, Run-Qi Lei, Jian-Zhang Li, Cai-Yin Pang, She-Song Huang, Xibo Zhang
https://arxiv.org/abs/2510.06636

A laser with instability reaching $4 \times 10^{-17}$ based on a 10-cm-long silicon cavity at sub-5-K temperatures
The realization of ultra-stable lasers with $10^{-17}$-level frequency stability has enabled a wide range of researches on precision metrology and fundamental science, where cryogenic single-crystalline cavities constitute the heart of such ultra-stable lasers. For further improvements in stability, increasing the cavity length at few-kelvin temperatures provides a promising alternative to utilizing relatively short cavities with novel coating, but has yet to be demonstrated with state-of-the-a…

Saldanha said
his brain? WACK
his eyes? WACK
his arms? WACK
me? I'm tight as FUCK
#fedifc

Spin-spiral instability of the Nagaoka ferromagnet in the crossover between square and triangular lattices
Darren Pereira, Erich J. Mueller
https://arxiv.org/abs/2510.05226 http…

Spin-spiral instability of the Nagaoka ferromagnet in the crossover between square and triangular lattices
We study the hard-core Fermi-Hubbard model in the crossover between square and triangular lattices near half-filling. As was recognized by Nagaoka in the 1960s, on the square lattice the presence of a single hole leads to ferromagnetic spin ordering. On the triangular lattice, geometric frustration instead leads to a spin-singlet ground state, which can be associated with a 120-degree spiral order. On lattices which interpolate between square and triangular, there is a phase transition at which…

D$^2$GS: Depth-and-Density Guided Gaussian Splatting for Stable and Accurate Sparse-View Reconstruction
Meixi Song, Xin Lin, Dizhe Zhang, Haodong Li, Xiangtai Li, Bo Du, Lu Qi
https://arxiv.org/abs/2510.08566

D$^2$GS: Depth-and-Density Guided Gaussian Splatting for Stable and Accurate Sparse-View Reconstruction
Recent advances in 3D Gaussian Splatting (3DGS) enable real-time, high-fidelity novel view synthesis (NVS) with explicit 3D representations. However, performance degradation and instability remain significant under sparse-view conditions. In this work, we identify two key failure modes under sparse-view conditions: overfitting in regions with excessive Gaussian density near the camera, and underfitting in distant areas with insufficient Gaussian coverage. To address these challenges, we propose…

Stabilizing the Staking Rate, Dynamically Distributed Inflation and Delay Induced Oscillations
Carlo Brunetta, Amit Chaudhary, Stefano Galatolo, Massimiliano Sala
https://arxiv.org/abs/2510.11065

Stabilizing the Staking Rate, Dynamically Distributed Inflation and Delay Induced Oscillations
Dynamically distributed inflation is a common mechanism used to guide a blockchain's staking rate towards a desired equilibrium between network security and token liquidity. However, the high sensitivity of the annual percentage yield to changes in the staking rate, coupled with the inherent feedback delays in staker responses, can induce undesirable oscillations around this equilibrium. This paper investigates this instability phenomenon. We analyze the dynamics of inflation-based reward s…

LATTA: Langevin-Anchored Test-Time Adaptation for Enhanced Robustness and Stability
Harshil Vejendla
https://arxiv.org/abs/2510.05530 https://arxiv.org/pdf…

LATTA: Langevin-Anchored Test-Time Adaptation for Enhanced Robustness and Stability
Test-time adaptation (TTA) aims to adapt a pretrained model to distribution shifts using only unlabeled test data. While promising, existing methods like Tent suffer from instability and can catastrophically forget the source knowledge, especially with small batch sizes or challenging corruptions. We argue that this arises from overly deterministic updates on a complex loss surface. In this paper, we introduce Langevin-Anchored Test-Time Adaptation (LATTA), a novel approach that regularizes ada…

General real-valued theories with the Schr\"oder-Bernstein property are stable
Alexander Berenstein, Nicol\'as Cuervo Ovalle, Isaac Goldbring
https://arxiv.org/abs/2510.11858

General real-valued theories with the Schröder-Bernstein property are stable
We show that every general theory à la Keisler with the Schröder-Bernstein property is stable. This generalizes the corresponding result from classical logic due to John Goodrick. Our proof uses the classical result (generalized to the case that the instability is witnessed by an infinitary formula) together with a discretization technique introduced by Keisler and the third-named author. We speculate on how our techniques could be adapted to show that every continuous theory with the Schröd…

Breakdown of Non-Bloch Bulk-Boundary Correspondence and Emergent Topology in Floquet Non-Hermitian Systems
Hong Wu, Xue-Min Yang, Hui Liu
https://arxiv.org/abs/2510.09193 https:…

Breakdown of Non-Bloch Bulk-Boundary Correspondence and Emergent Topology in Floquet Non-Hermitian Systems
Topological edge states in gaps of non-Hermitian systems are robust due to topological protection. Using the non-Hermitian Floquet Su-Schrieffer-Heeger model, we show that this robustness can break down: edge states may be suppressed by infinitesimal perturbations that preserve sublattice symmetry. We identify this fragility to the instability of the quasienergy spectrum in finite-size systems, leading to a breakdown of the non-Bloch bulk-boundary correspondence defined on the generalized Brill…

Accelerated Aggregated D-Optimal Designs for Estimating Main Effects in Black-Box Models
Chih-Yu Chang, Ming-Chung Chang
https://arxiv.org/abs/2510.08465 https://

Accelerated Aggregated D-Optimal Designs for Estimating Main Effects in Black-Box Models
Recent advances in supervised learning have driven growing interest in explaining black-box models, particularly by estimating the effects of input variables on model predictions. However, existing approaches often face key limitations, including poor scalability, sensitivity to out-of-distribution sampling, and instability under correlated features. To address these issues, we propose A2D2E, an $\textbf{E}$stimator based on $\textbf{A}$ccelerated $\textbf{A}$ggregated $\textbf{D}$-Optimal $\te…

Is Milky Way stable all the way ? A TNG50 view from cosmic noon to the present day
K. Aditya, Sandeep Kataria
https://arxiv.org/abs/2510.12263 https://arxi…

Is Milky Way stable all the way ? A TNG50 view from cosmic noon to the present day
We investigate the stability of Milky Way analogs (MWAs) in the \texttt{TNG50} simulation against the growth of local axisymmetric instabilities, tracing their evolution from cosmic noon ($z=2.5$) to the present day ($z=0$). Using a two-component stability criterion that accounts for stars, gas, and the force field of the dark matter halo, we compute the net stability parameter ($Q_{T}$), the critical gas surface density ($Σ_{c}$), and the instability timescale ($τ$) for 10 barred and 10 unba…

Hubbard-like Interactions and Emergent Dynamical Regimes Between Modulational Instability and Self-Trapping
L. J. R. Bezerra Jr., W. S. Dias
https://arxiv.org/abs/2510.08781 htt…

Hubbard-like Interactions and Emergent Dynamical Regimes Between Modulational Instability and Self-Trapping
We investigate the modulational instability of uniform wave packets governed by a discrete third-order nonlinear Schrödinger equation in finite square lattices, modeling light propagation in two-dimensional nonlinear waveguide arrays. We analyze how initially stable uniform distributions evolve into self-trapped (localized) regimes and the influence of a refractive index detuning selectively applied along the diagonal waveguides on this transition. This detuning effectively emulates the effect…

IntMeanFlow: Few-step Speech Generation with Integral Velocity Distillation
Wei Wang, Rong Cao, Yi Guo, Zhengyang Chen, Kuan Chen, Yuanyuan Huo
https://arxiv.org/abs/2510.07979 …

IntMeanFlow: Few-step Speech Generation with Integral Velocity Distillation
Flow-based generative models have greatly improved text-to-speech (TTS) synthesis quality, but inference speed remains limited by the iterative sampling process and multiple function evaluations (NFE). The recent MeanFlow model accelerates generation by modeling average velocity instead of instantaneous velocity. However, its direct application to TTS encounters challenges, including GPU memory overhead from Jacobian-vector products (JVP) and training instability due to self-bootstrap processes…

Infall Explains the Disk Kinematics of AB Aur Without Gravitational Instability
Josh Calcino, Daniel J. Price, Chris W. Ormel
https://arxiv.org/abs/2510.05601 https://

Infall Explains the Disk Kinematics of AB Aur Without Gravitational Instability
Late-stage infall onto protoplanetary disks can produce large scale spiral arms. In this paper we used 3D smoothed particle hydrodynamics and radiative transfer simulations to study the kinematic perturbations induced in disks by infalling material. We found that deviations from Keplerian rotation are predominantly in the radial and vertical velocity components, spatially correlated with spiral arms in the gas surface density. The infall produces observable wiggles in the channel maps, analogou…

A Stable, Accurate and Well-Conditioned Time-Domain PMCHWT Formulation
Van Chien Le, Cedric Munger, Francesco P. Andriulli, Kristof Cools
https://arxiv.org/abs/2510.07989 https:…

A Stable, Accurate and Well-Conditioned Time-Domain PMCHWT Formulation
This paper introduces a new boundary element formulation for transient electromagnetic scattering by homogeneous dielectric objects based on the time-domain PMCHWT equation. To address dense-mesh breakdown, a multiplicative Calderon preconditioner utilizing a modified static electric field integral operator is employed. Large-timestep breakdown and late-time instability are simultaneously resolved by rescaling the Helmholtz components leveraging the quasi-Helmholtz projectors and using temporal…

(Non-Parametric) Bootstrap Robust Optimization for Portfolios and Trading Strategies
Daniel Cunha Oliveira, Grover Guzman, Nick Firoozye
https://arxiv.org/abs/2510.12725 https:/…

(Non-Parametric) Bootstrap Robust Optimization for Portfolios and Trading Strategies
Robust optimization provides a principled framework for decision-making under uncertainty, with broad applications in finance, engineering, and operations research. In portfolio optimization, uncertainty in expected returns and covariances demands methods that mitigate estimation error, parameter instability, and model misspecification. Traditional approaches, including parametric, bootstrap-based, and Bayesian methods, enhance stability by relying on confidence intervals or probabilistic prior…

Nonlinear Stability of the Rayleigh-Taylor Problem in Quantum Navier-Stokes Equations
Fei Jiang, Yajie Zhang, Zhipeng Zhang, Youyi Zhao
https://arxiv.org/abs/2510.07695 https://…

Nonlinear Stability of the Rayleigh-Taylor Problem in Quantum Navier-Stokes Equations
It is well-known that the Rayleigh--Taylor (abbr. RT) instability can be completely inhibited by the quantum effect stabilization in proper circumstances leading to a cutoff wavelength in the \emph{linear} motion equations. Motivated by the linear theory, we further investigate the {stability} for the \emph{nonlinear} RT problem of quantum Navier--Stokes equations in a slab with Navier boundary condition, and rigorously prove the inhibition of RT instability by the quantum effect under a proper…

Project Severe Weather Archive of the Philippines (SWAP) Part 2: Baseline Climatology of Close Proximity Soundings in Hailstorm Environments across Luzon, Philippines
Generich H. Capuli
https://arxiv.org/abs/2510.09530

Project Severe Weather Archive of the Philippines (SWAP) Part 2: Baseline Climatology of Close Proximity Soundings in Hailstorm Environments across Luzon, Philippines
The environments of severe thunderstorms that produced hail were examined using 171 proximity soundings (2005-2024) archived in the 3rd Data Release of Project SWAP. These soundings were categorized based on their geographical occurrence into three hail-prone environments across Luzon, Philippines. For each case, key parameters describing instability, vertical wind structure, and moisture were calculated to assess their relationship to hail formation. The probability of hail occurrence, express…

Stabilizing MoE Reinforcement Learning by Aligning Training and Inference Routers
Wenhan Ma, Hailin Zhang, Liang Zhao, Yifan Song, Yudong Wang, Zhifang Sui, Fuli Luo
https://arxiv.org/abs/2510.11370

Stabilizing MoE Reinforcement Learning by Aligning Training and Inference Routers
Reinforcement learning (RL) has emerged as a crucial approach for enhancing the capabilities of large language models. However, in Mixture-of-Experts (MoE) models, the routing mechanism often introduces instability, even leading to catastrophic RL training collapse. We analyze the training-inference consistency of MoE models and identify a notable discrepancy in routing behaviors between the two phases. Moreover, even under identical conditions, the routing framework can yield divergent expert …

Intelligent Prediction and Optimization of Open-Hole Wellbore Multiphysics Stability: A Synergistic PINN-DRL Approach
Yu Song, Zehua Song, Jin Yang, Kejin Chen, Kun Jiang, Jizhou Tang
https://arxiv.org/abs/2510.09638

Intelligent Prediction and Optimization of Open-Hole Wellbore Multiphysics Stability: A Synergistic PINN-DRL Approach
To address the dual challenge of predicting multiphysics-induced instability and optimizing drilling fluid parameters for open-hole wellbores under long-term exposure, a high-fidelity system of coupled governing equations was developed. This system integrates seepage, hydration-induced softening, thermal diffusion, and elasto-plastic response to capture the nonlinear dynamics of wellbore stability evolution. A two-dimensional numerical model in a polar coordinate system was established using CO…

Optical clocks with accuracy validated at the 19th digit
K. J. Arnold, M. D. K. Lee, Zhao Qi, Qichen Qin, Zhang Zhao, N. Jayjong, M. D. Barrett
https://arxiv.org/abs/2512.07346 https://arxiv.org/pdf/2512.07346 https://arxiv.org/html/2512.07346
arXiv:2512.07346v1 Announce Type: new
Abstract: We report a comprehensive evaluation of all known sources of systematic uncertainty for two independent $^{176}$Lu$^ $ single-ion optical references, finding total systematic uncertainty of $1.1\times10^{-19}$ and $1.4\times10^{-19}$ for the two individual systems and $9.6\times10^{-20}$ for the difference. Through direct comparison via correlation spectroscopy, we demonstrate a relative frequency agreement of $-2.4\pm(5.7)_\mathrm{stat}\pm(1.0)_\mathrm{sys}\times10^{-19}$, where `stat' and `sys' indicate the statistical and systematic uncertainty, respectively. The comparison uncertainty is statistically limited after approximately 200 hours of averaging with a measurement instability of $4.8\times10^{-16}(\tau/\mathrm{s})^{-1/2}$.
toXiv_bot_toot

DecompGAIL: Learning Realistic Traffic Behaviors with Decomposed Multi-Agent Generative Adversarial Imitation Learning
Ke Guo, Haochen Liu, Xiaojun Wu, Chen Lv
https://arxiv.org/abs/2510.06913

DecompGAIL: Learning Realistic Traffic Behaviors with Decomposed Multi-Agent Generative Adversarial Imitation Learning
Realistic traffic simulation is critical for the development of autonomous driving systems and urban mobility planning, yet existing imitation learning approaches often fail to model realistic traffic behaviors. Behavior cloning suffers from covariate shift, while Generative Adversarial Imitation Learning (GAIL) is notoriously unstable in multi-agent settings. We identify a key source of this instability: irrelevant interaction misguidance, where a discriminator penalizes an ego vehicle's reali…

Crosslisted article(s) found for cond-mat.quant-gas. https://arxiv.org/list/cond-mat.quant-gas/new
[1/1]:
- Spin-spiral instability of the Nagaoka ferromagnet in the crossover between square and triangular...
Darren Pereira, Erich J. Mueller

Magnetic Decay Index Profile and Coronal Mass Ejection Speed
Bernhard Kliem, Georgios Chintzoglou, Tibor T\"or\"ok, Jie Zhang
https://arxiv.org/abs/2510.11889 https://…

Magnetic Decay Index Profile and Coronal Mass Ejection Speed
We study the relationship between the speed of coronal mass ejections (CMEs) and the height profile of the ambient magnetic field, quantified by its decay index, n(h). Our sample is composed of 15 very fast CMEs (Vcme > 1500 km/s; all halo CMEs) and 22 halo CMEs below this speed limit from Solar Cycle 23. The very fast CMEs yield a high correlation of 0.81 between Vcme and the slope of n(h) in a height range above the onset height of the torus instability if one extremely fast outlier, which cl…

Non-Normal Eigenvector Amplification in Multi-Dimensional Kesten Processes
Virgile Troude, Didier Sornette
https://arxiv.org/abs/2510.11763 https://arxiv.o…

Non-Normal Eigenvector Amplification in Multi-Dimensional Kesten Processes
Heavy-tailed fluctuations and power law statistics pervade physics, finance, and economics, yet their origin is often ascribed to systems poised near criticality. Here we show that such behavior can emerge far from instability through a universal mechanism of non-normal eigenvector amplification in multidimensional Kesten processes $x_{t+1}=A_t x_t+η_t$, where $A_t$ are random interaction matrices and $η_t$ represents external inputs, capturing the evolving interdependence among $N$ coupled c…

Emergence of advection-diffusion transport structure and nonlinear amplitude evolution of strongly driven instabilities
Emma G. Devin, Vin\'icius N. Duarte
https://arxiv.org/abs/2510.08735

Emergence of advection-diffusion transport structure and nonlinear amplitude evolution of strongly driven instabilities
Instabilities driven by strong gradients appear in a wide variety of physical systems, including plasmas, neutral fluids, and self-gravitating systems. This work develops an analytic formulation to describe the transport structure and nonlinear amplitude evolution of a discrete, strongly driven instability in the presence of energy sources and sinks. Initially, the mode is found to evolve linearly until the gradient in the distribution has been exhausted. It then transitions to a nonlinear phas…

On the Formation of GW231123 in Population III Star Clusters
Shuai Liu, Long Wang, Ataru Tanikawa, Weiwei Wu, Michiko S. Fujii
https://arxiv.org/abs/2510.05634 https://

On the Formation of GW231123 in Population III Star Clusters
GW231123 is a binary black hole merger whose primary component lies within or above the pair-instability mass gap, while the secondary component falls within this gap. The standard theory of stellar evolution is significantly challenged by this event. We investigate the formation of candidate progenitors of GW231123 in Population III (Pop3) star clusters. We find that they could form through stellar mergers, binary black hole mergers, and mixed mergers. The mass distribution of these candidate …

Confinement-Controlled Morphology and Stability of One-Dimensional CrI3 Nanotubes
Ihsan Caha, Aqrab ul Ahmad, Francis Leonard Deepak
https://arxiv.org/abs/2510.05889 https://

Confinement-Controlled Morphology and Stability of One-Dimensional CrI3 Nanotubes
Integrating monolayers derived from 2D van der Waals (vdW) magnetic materials into next-generation technological applications remains a significant challenge due to their structural and magnetic instability issues. Template-assisted encapsulation is a potential route for the growth of stable 2D monolayers aimed at designing novel 1D heterostructures, opening new avenues for studying low-dimensional quantum effects and spin-related phenomena. In this study, we explored the diameter-dependent enc…

Coexistence of Spectrally Stable and Unstable Modes in Black Hole Ringdowns
Peng Wang, Tianshu Wu
https://arxiv.org/abs/2510.12135 https://arxiv.org/pdf/25…

Coexistence of Spectrally Stable and Unstable Modes in Black Hole Ringdowns
Recent studies have shown that a secondary potential barrier, forming a potential well outside the event horizon, can destabilize the Quasinormal Mode (QNM) spectrum of black holes. We find that spectral instability may persist even after the potential well vanishes, giving rise to a distinct family of spectrally unstable QNMs that differ from the spectrally stable modes localized near the potential peak and associated with the photon sphere. Nevertheless, time-domain simulations reveal that ea…

Vestigial $d$-wave charge-$4e$ Superconductivity from Bidirectional Pair Density Waves
Ethan Huecker, Yuxuan Wang
https://arxiv.org/abs/2510.05209 https://…

Vestigial $d$-wave charge-$4e$ Superconductivity from Bidirectional Pair Density Waves
We analyze the leading vestigial instability due to the melting of a bidirectional pair-density-wave state in two dimensions. In a previous work by one of the authors, it was found that the interplay between pair-density-wave fluctuations with ordering momenta along the $x$ and $y$ directions can provide a strong attractive interaction for charge-$4e$ superconductivity in the $d$-wave channel. In this work, we go beyond the artificial large-$M$ mean-field theory previously adopted and compute t…

On The Orbital Evolution of Multiple Wide Super-Jupiters: How Disk Migration and Dispersal Shape the Stability of The PDS 70 System
Clarissa R. Do \'O, Jaehan Bae, Quinn M. Konopacky, Jayke S. Nguyen, Patrick Diamond, Krzysztof Go\'zdziewski, Dawid Jankowski
https://arxiv.org/abs/2510.11021…

On The Orbital Evolution of Multiple Wide Super-Jupiters: How Disk Migration and Dispersal Shape the Stability of The PDS 70 System
Direct imaging has revealed exoplanet systems hosting multiple wide-orbit Super-Jupiters, where planet-planet interactions can shape their long-term dynamical evolution. These strong perturbations may lead to orbital instability, raising questions about the long-term survival of such systems. Shortly after formation, planet-disk interactions can shepherd planets into mean-motion resonances, which may promote long-term stability as seen in HR 8799. However, early-stage processes such as disk pho…

Crosslisted article(s) found for physics.atom-ph. https://arxiv.org/list/physics.atom-ph/new
[1/1]:
- A laser with instability reaching $4 \times 10^{-17}$ based on a 10-cm-long silicon cavity at sub...
Chen, Zeng, Wang, Zhang, Lei, Li, Pang, Huang, Zhang

Charged wormholes can be long-lived
Jose Luis Bl\'azquez-Salcedo, Luis Manuel Gonz\'alez-Romero, Fech Scen Khoo, Jutta Kunz, Pablo Navarro Moreno
https://arxiv.org/abs/2510.11406

Charged wormholes can be long-lived
Ellis-Bronnikov wormholes suffer from an unstable radial mode. Here we investigate the evolution of the unstable mode(s) for charged wormholes. We show that the instability remains in the presence of charge, but exhibits a very fast decrease to zero, suggesting that wormholes that approach a near-extremal metric could be long-lived. For so-called supercritical wormholes, two purely imaginary unstable modes merge and continue with degenerate imaginary parts and opposite real parts. By analogy, w…

Replaced article(s) found for physics.plasm-ph. https://arxiv.org/list/physics.plasm-ph/new
[1/1]:
- Unveiling a New $\beta$-Scaling of the Tearing Instability in Weakly Collisional Plasmas
Gabriel L. Ferreira-Santos, Grzegorz Kowal, Diego A. Falceta-Gon\c{c}alves
…