Tootfinder

eben noch bei einer Critical Mass durch Zagreb mitgeradelt. :-)
#CriticalMass #Zagreb #CycloCamp

Normalized solutions to Kirchhoff equation with the Sobolev critical exponent in high dimensional spaces
Ruikang Lu, Qilin Xie, Jianshe Yu
https://arxiv.org/abs/2509.13663 https…

Normalized solutions to Kirchhoff equation with the Sobolev critical exponent in high dimensional spaces
The following well-known Kirchhoff equation with the Sobolev critical exponent has been extensively studied, \begin{equation*} -\Big(a+b\int_{\mathbb R^N} | \nabla u|^2dx\Big) Δu+λu=μ|u|^{q-2}u+|u|^{2^*-2}u \ \ {\rm in}\ \ \mathbb{R}^N, \ \ N\geq4, \end{equation*} having prescribed mass $\int_{\mathbb R^N}|u|^2dx=c$, where $a$, $c$ are two positive constants, $b,μ$ are two parameters, $λ$ appears as a real Lagrange multiplier and $2

Image Profile (IMPRO) Fitting of Massive Protostars. I. Method Development and Test Cases of Cepheus A and G35.20-0.74N
Yao-Lun Yang, Jonathan C. Tan, Rub\'en Fedriani, Yichen Zhang
https://arxiv.org/abs/2508.12625

Image Profile (IMPRO) Fitting of Massive Protostars. I. Method Development and Test Cases of Cepheus A and G35.20-0.74N
Massive stars play a critical role in the evolution of galaxies, but their formation remains poorly understood. One challenge is accurate measurement of the physical properties of massive protostars, such as current stellar mass, envelope mass, outflow cavity properties, and system orientation. Spectral energy distribution (SED) fitting is widely-used to test models against observations. The far-infrared SED traces cold dust in envelopes, while the near- and mid-infrared (MIR) probes emission f…

Phases of 2d Gauge Theories and Symmetric Mass Generation
Rishi Mouland, David Tong, Bernardo Zan
https://arxiv.org/abs/2509.12305 https://arxiv.org/pdf/25…

Phases of 2d Gauge Theories and Symmetric Mass Generation
We study the dynamics and phase structure of Abelian gauge theories in $d=1+1$ dimensions. These include $U(1)$ gauge theory coupled to a scalar and a fermion, as well as the two-flavour Schwinger model with different charges. Both theories exhibit a surprisingly rich phase diagram as masses are varied, with both $c=1$ and $c=1/2$ critical lines or points. We build up to the study of 2d chiral gauge theories, which hold particular interest because they provide a mechanism for symmetric mass gen…

Polycyclic aromatic hydrocarbons destruction in star-forming regions across 42 nearby galaxies
Oleg V. Egorov, Adam K. Leroy, Karin Sandstrom, Kathryn Kreckel, Dalya Baron, Francesco Belfiore, Ryan Chown, Jessica Sutter, M\'ed\'eric Boquien, Mar Canal i Saguer, Enrico Congiu, Daniel A. Dale, Evgeniya Egorova, Michael Huber, Jing Li, Thomas G. Williams, J\'er\'emy Chastenet, I-Da Chiang, Ivan Gerasimov, Hamid Hassani, Hwihyun Kim, Hannah Koziol, Janice C. Lee, Rebecca L.…

Polycyclic aromatic hydrocarbons destruction in star-forming regions across 42 nearby galaxies
Polycyclic aromatic hydrocarbons (PAHs) are widespread in the interstellar medium (ISM) of Solar metallicity galaxies, where they play a critical role in ISM heating, cooling, and reprocessing stellar radiation. The PAH fraction, the abundance of PAHs relative to total dust mass, is a key parameter in ISM physics. Using JWST and MUSE observations of 42 galaxies from the PHANGS survey, we analyze the PAH fraction in over 17 000 H II regions spanning a gas-phase oxygen abundance of 12+log(O/H) = …

Dynamical Mass Generation in QED: Miransky scaling and Schr\"odinger-like infinite well and barrier potentials supporting a bound state
Juan D. Garc\'ia-Mu\~noz, A. Alfaro, L. X. Guti\'errez-Guerrero, A. Raya
https://arxiv.org/abs/2509.12366

Dynamical Mass Generation in QED: Miransky scaling and Schrödinger-like infinite well and barrier potentials supporting a bound state
In this study, we revisit the Schwinger-Dyson equation for the electron propagator in QED in three and four space-time dimensions. Our analysis addresses the non-perturbative phenomenon of dynamical chiral symmetry breaking, which requires a critical value of the coupling for the dynamical generation of electron masses, encoded in the infrared behavior of the corresponding Green function. With a minimalistic truncation of the infinite tower of equations and adopting standard assumptions, the re…

Modular, On-Site Solutions with Lightweight Anomaly Detection for Sustainable Nutrient Management in Agriculture
Abigail R. Cohen, Yuming Sun, Zhihao Qin, Harsh S. Muriki, Zihao Xiao, Yeonju Lee, Matthew Housley, Andrew F. Sharkey, Rhuanito S. Ferrarezi, Jing Li, Lu Gan, Yongsheng Chen
https://arxiv.org/abs/2509.12247

Modular, On-Site Solutions with Lightweight Anomaly Detection for Sustainable Nutrient Management in Agriculture
Efficient nutrient management is critical for crop growth and sustainable resource consumption (e.g., nitrogen, energy). Current approaches require lengthy analyses, preventing real-time optimization; similarly, imaging facilitates rapid phenotyping but can be computationally intensive, preventing deployment under resource constraints. This study proposes a flexible, tiered pipeline for anomaly detection and status estimation (fresh weight, dry mass, and tissue nutrients), including a comprehen…

Primordial Black Hole Formation in a Scalar Field Dominated Universe: Investigation of the Critical nature of the Collapse
Luis E. Padilla, Ethan Milligan, David J. Mulryne, Juan Carlos Hidalgo
https://arxiv.org/abs/2509.10431

Primordial Black Hole Formation in a Scalar Field Dominated Universe: Investigation of the Critical nature of the Collapse
In this paper, we investigate the critical collapse leading to primordial black hole (PBH) formation in a universe dominated by a self-interacting scalar field with a quartic potential, comparing it to the well-known radiation-dominated case. Using fully relativistic nonlinear numerical simulations in spherical symmetry, based on the Misner--Sharp formalism, we analyze the dynamics near the collapse threshold and track the scaling of the black hole mass. Our results confirm that both the scalar…

@… Wouldn’t hurt to add the synonyms and see if they get critical mass IMO.

Testing and Enhancing Multi-Agent Systems for Robust Code Generation
Zongyi Lyu, Songqiang Chen, Zhenlan Ji, Liwen Wang, Shuai Wang, Daoyuan Wu, Wenxuan Wang, Shing-Chi Cheung
https://arxiv.org/abs/2510.10460

Testing and Enhancing Multi-Agent Systems for Robust Code Generation
Multi-agent systems (MASs) have emerged as a promising paradigm for automated code generation, demonstrating impressive performance on established benchmarks by decomposing complex coding tasks across specialized agents with different roles. Despite their prosperous development and adoption, their robustness remains pressingly under-explored, raising critical concerns for real-world deployment. This paper presents the first comprehensive study examining the robustness of MASs for code generatio…

Angle-dependent hardening of the reprocessed spectra in ULXs powered by accretion onto neutron stars
Sricheta Karmakar, Alexander A. Mushtukov, Matthew Middleton
https://arxiv.org/abs/2509.11682

Angle-dependent hardening of the reprocessed spectra in ULXs powered by accretion onto neutron stars
It is anticipated that mass accretion rates exceeding approximately $10^{19}\,{\rm g\,s^{-1}}$ in X-ray pulsars lead to radiation-driven outflows from super-critical accretion discs. The outflows launched from the disc influence the angular distribution of X-ray radiation, resulting in geometrical beaming. The beaming, in turn, impacts the apparent luminosity of the X-ray pulsar, detectability of pulsations, and the spectral composition of the X-ray flux. We employ a straightforward geometrical…

Trying to get more details on those mass firings at CISA but remember that Russell Vought’s Project 2025 called for demolishing CISA and moving it into the Department of Transportation.
https://www.csoonline.com/article/3477366/

Project 2025 could escalate US cybersecurity risks, endanger more Americans
The conservative think tank blueprint for how Donald Trump should govern the US if he wins in November calls for dismantling CISA, among many cyber-related measures. Experts say this would increase cybersecurity risks, undermine critical infrastructure, and put more Americans in danger.

eben noch eine schickte Critical Mass hier in Stuttgart gefahren. Und trotz ca. 2⁰C waren etwa 500 Personen dabei. Einige Musikanlagen (wann habe ich denn zuletzt Darude's Sandstorm gehört?), natürlich viel Licht, zwei Tandems und das Hexabike mit mir. ;-)
#CriticalMass #Stuttgart

Which Rope Breaks? A Study of Tension Distribution in Multi-Rope Systems
Amir Eskandari-asl, Roberto De Luca
https://arxiv.org/abs/2509.09973 https://arxiv…

Which Rope Breaks? A Study of Tension Distribution in Multi-Rope Systems
We investigate the tension distribution in systems of mass-less ropes under different loading conditions. For a two-rope system, we demonstrate how the breaking scenario depends on the applied force dynamics: rapid pulling causes the lower rope to break, while gradual pulling leads to upper rope failure. Extending to a three-rope Y-shaped configuration, we identify a critical angle theta_C=60° that determines which rope breaks first. When the angle between the upper ropes exceeds this critical…

Critical Masses and Numerical Computation of Massive Scalar Quasinormal Modes in Schwarzschild Black Holes
Matheus F. S. Alves, Bruno P. P\^onquio, L. G. Medeiros
https://arxiv.org/abs/2509.07235

Critical Masses and Numerical Computation of Massive Scalar Quasinormal Modes in Schwarzschild Black Holes
We present a comprehensive analysis of the quasinormal modes (QNMs) of a massive scalar field in Schwarzschild spacetime using two complementary numerical techniques: the Hill-determinant method and Leaver continued-fraction method. Our study systematically compares the performance, convergence, and consistency of the two approaches across a wide range of field masses and angular momenta. We identify three critical mass thresholds, $m_{\rm lim}$, $m_{\rm max}$, and $m_{zd}$, which govern qualit…

Chirality reversal at finite magnetic impurity strength and local signatures of a topological phase transition
Ruiqi Xu, Arnab Seth, Itamar Kimchi
https://arxiv.org/abs/2510.11707

Chirality reversal at finite magnetic impurity strength and local signatures of a topological phase transition
We study the honeycomb lattice with a single magnetic impurity modeled by adding imaginary next-nearest-neighbor hopping ih on a single hexagon. This Haldane defect gives a topological mass term to the gapless Dirac cones and generates chirality. For a small density of defects Neehus et al [arXiv:2405.19289] found that the system's chirality reverses at a critical hc ~ 0.95 associated with an unexpected tri-critical point of Dirac fermions at zero defect density. We investigate this zero-densit…

FeNOMS: Enhancing Open Modification Spectral Library Search with In-Storage Processing on Ferroelectric NAND (FeNAND) Flash
Sumukh Pinge, Ashkan Moradifirouzabadi, Keming Fan, Prasanna Venkatesan Ravindran, Tanvir H. Pantha, Po-Kai Hsu, Zheyu Li, Weihong Xu, Zihan Xia, Flavio Ponzina, Winston Chern, Taeyoung Song, Priyankka Ravikumar, Mengkun Tian, Lance Fernandes, Huy Tran, Hari Jayasankar, Hang Chen, Chinsung Park, Amrit Garlapati, Kijoon Kim, Jongho Woo, Suhwan Lim, Kwangsoo Kim, Wa…

FeNOMS: Enhancing Open Modification Spectral Library Search with In-Storage Processing on Ferroelectric NAND (FeNAND) Flash
The rapid expansion of mass spectrometry (MS) data, now exceeding hundreds of terabytes, poses significant challenges for efficient, large-scale library search - a critical component for drug discovery. Traditional processors struggle to handle this data volume efficiently, making in-storage computing (ISP) a promising alternative. This work introduces an ISP architecture leveraging a 3D Ferroelectric NAND (FeNAND) structure, providing significantly higher density, faster speeds, and lower volt…

LIPM-Guided Reinforcement Learning for Stable and Perceptive Locomotion in Bipedal Robots
Haokai Su, Haoxiang Luo, Shunpeng Yang, Kaiwen Jiang, Wei Zhang, Hua Chen
https://arxiv.org/abs/2509.09106

LIPM-Guided Reinforcement Learning for Stable and Perceptive Locomotion in Bipedal Robots
Achieving stable and robust perceptive locomotion for bipedal robots in unstructured outdoor environments remains a critical challenge due to complex terrain geometry and susceptibility to external disturbances. In this work, we propose a novel reward design inspired by the Linear Inverted Pendulum Model (LIPM) to enable perceptive and stable locomotion in the wild. The LIPM provides theoretical guidance for dynamic balance by regulating the center of mass (CoM) height and the torso orientation…

Verification of Convergent-Divergent Nozzle Designs in Propulsion Aerospace Applications
Noah L. Estrada, Marc A. Cantu, Arturo Rodriguez, Andrew R. Ybarra, Jeffrey H. Farris, Francisco O. Aguirre Ortega, Vineeth Vijaya Kumar, Vinod Kumar
https://arxiv.org/abs/2510.11667

Verification of Convergent-Divergent Nozzle Designs in Propulsion Aerospace Applications
The performance of convergent divergent nozzles plays a critical role in aerospace propulsion systems, where efficient expansion of high-temperature, high-pressure gases directly impacts thrust generation. In this study, we investigate a series of nozzle geometries using numerical simulations performed in ANSYS Fluent, with design parameters guided by classical compressible flow theory, initially developed by Ludwig Prandtl. The governing equations of conservation of mass, momentum, and energy …

Searching for Stellar-Feedback-Driven Outflow Signatures: A Deep Dive into NGC 3741
Lexi N. Gault, Liese van Zee, Elizabeth A. K. Adams, James M. Wells, Laura Congreve Hunter, Kristen B. W. McQuinn, Roger E. Cohen, O. Grace Telford
https://arxiv.org/abs/2510.12645

Searching for Stellar-Feedback-Driven Outflow Signatures: A Deep Dive into NGC 3741
Stellar feedback drives winds and outflows critical to the baryon cycles of low-mass galaxies whose shallow gravitational potential wells make them particularly susceptible to mass and metal loss through outflows. However, spatially resolved observations of stellar-feedback-driven outflows are limited due to their low-surface brightness and transient nature. We present the pilot of a larger multi-wavelength study searching for and quantifying stellar-feedback-driven winds and outflows on both s…

Persuasion Gains and Losses from Peer Communication
Toygar T. Kerman, Anastas P. Tenev, Konstantin Zabarnyi
https://arxiv.org/abs/2509.09099 https://arxiv.…

Persuasion Gains and Losses from Peer Communication
We study a Bayesian persuasion setting in which a sender wants to persuade a critical mass of receivers by revealing partial information about the state to them. The homogeneous binary-action receivers are located on a communication network, and each observes the private messages sent to them and their immediate neighbors. We examine how the sender's expected utility varies with increased communication among receivers. We show that for general families of networks, extending the network can str…

The EU is pushing to scan ALL private messages, even encrypted ones, endangering privacy, security, and fundamental freedoms across 450 million people.
This is mass surveillance disguised as child protection, and it breaks encryption, risks false accusations, and threatens democracy worldwide.
Learn more & act NOW: https://fightchatcontrol…

Effect of stochastic kicks on primordial black hole abundance and mass via the compaction function
Sami Raatikainen, Syksy Rasanen, Eemeli Tomberg
https://arxiv.org/abs/2510.09303

Effect of stochastic kicks on primordial black hole abundance and mass via the compaction function
We study stochastic effects in viable ultra-slow-roll inflation models that produce primordial black holes. We consider asteroid, solar, and supermassive black hole seed masses. In each case, we simulate $10^8$ patches of the universe that may collapse into PBHs. In every patch, we follow $4\times10^4$ momentum shells to construct its spherically symmetric profile from first principles, without introducing a window function. We include the effects of critical collapse and the radiation era tran…

Short GRB 090510: a magnetized neutron star binary merger leading to a black hole
J. A. Rueda, R. Ruffini, Yu Wang
https://arxiv.org/abs/2509.08172 https://

Short GRB 090510: a magnetized neutron star binary merger leading to a black hole
We model the short gamma-ray bursts (GRB) 090510 as the product of a magnetized neutron star (NS) binary merger. Accounting for the NS critical mass constraint given by the mass of PSR J0952--0607, we infer that GRB 090510 was a highly-magnetized NS-NS merger that left as remnant a Kerr black hole (BH) of $2.4 M_\odot$ with a low-mass accretion disk. The gamma-ray precursor is powered by the magnetic energy released during the merger of the NSs. The prompt emission originates at the transparenc…

Generalized eigenvalue stabilization for immersed explicit dynamics
Tim B\"urchner, Lars Radtke, Sascha Eisentr\"ager, Alexander D\"uster, Ernst Rank, Stefan Kollmannsberger, Philipp Kopp
https://arxiv.org/abs/2509.07632

Generalized eigenvalue stabilization for immersed explicit dynamics
Explicit time integration for immersed finite element discretizations severely suffers from the influence of poorly cut elements. In this contribution, we propose a generalized eigenvalue stabilization (GEVS) strategy for the element mass matrices of cut elements to cure their adverse impact on the critical time step size of the global system. We use spectral basis functions, specifically $C^0$ continuous Lagrangian interpolation polynomials defined on Gauss-Lobatto-Legendre (GLL) points, which…

Non-spherical minimizers in the generalized liquid drop model for Yukawa and truncated Coulomb potentials
Lia Bronsard, Beno\^it Merlet, Marc Pegon
https://arxiv.org/abs/2510.11893

Non-spherical minimizers in the generalized liquid drop model for Yukawa and truncated Coulomb potentials
We investigate generalized liquid drop models with screened Riesz-type interactions, focusing in particular on truncated Coulomb and Yukawa potentials in three dimensions. While the classical Gamow model with Coulomb interaction is conjectured to admit only spherical minimizers below a critical mass and no minimizer above, we show that this conjecture fails if the interaction is screened. In the case of truncated Coulomb and Yukawa potentials, we establish the existence of non-spherical minimiz…

Revising core powered mass loss: A critical assessment of the "energy limited" argument
Darius Modirrousta-Galian, Jun Korenaga
https://arxiv.org/abs/2509.16046 https:…

Revising core powered mass loss: A critical assessment of the "energy limited" argument
The extreme conditions in the early stages of planetary evolution are thought to shape its subsequent development. High internal temperatures from giant impacts can provide sufficient energy to drive extreme volatile loss, with hydrogen being most readily lost. However, the conditions required for maintaining a primordial atmosphere over geological timescales remain enigmatic. This paper revisits the core powered mass loss model for hydrogen removal from planetary atmospheres. One popular appro…

Theory of superconductivity and mass enhancement near CDW critical point based on Bethe-Salpeter equation method: application to cuprates
Youichi Yamakawa, Hiroshi Kontani
https://arxiv.org/abs/2508.19536

Theory of superconductivity and mass enhancement near CDW critical point based on Bethe-Salpeter equation method: application to cuprates
In recent years, charge-channel orders in strongly correlated metals have attracted great attention. Famous examples are the electronic nematic orders in cuprates and iron-based superconductors, and Star-of-David order in kagome metals. Critical phenomena and unconventional superconductivity arising from fluctuations of such charge-channel orders are central issues today; however, the essential role is played by the vertex corrections, which are the many-body effects that are dropped in convent…

High-order staggered Lagrangian hydrodynamics (I): framework of the discretization scheme
Zhiyuan Sun, Jun Liu, Pei Wanga
https://arxiv.org/abs/2509.05944 https://

High-order staggered Lagrangian hydrodynamics (I): framework of the discretization scheme
This paper presents a discretization framework for high-order staggered Lagrangian hydrodynamics, bridging two well-established algorithms algorithms: high-order curvilinear finite element Lagrangian hydrodynamics [Dobrev et al. 2012] and compatible hydrodynamics methods[Caramana et al.1998]. We emphasizes the critical relationship between the degrees of freedom (DOFs) associated with the density variable and the choice of numerical quadrature rules which is employed in the mass conservation la…

Probing the Physics of Dusty Outflows through Complex Organic Molecules in the Early Universe
Andrey Vayner, Tanio D\'iaz-Santos, Carl D. Ferkinhoff, Peter R. M. Eisenhardt, Daniel Stern, Lee Armus, Brandon S. Hensley, Daniel Angl\'es-Alc\'azar, Roberto J. Assef, Rom\'an Fern\'andez Aranda, Andrew W. Blain, Hyunsung D. Jun, Norman W. Murray, Shelley Wright, Chao-Wei Tsai, Thomas Lai, Niranjan Chandra Roy, Drew Brisbin, Manuel Aravena, Jorge Gonz\'alez-L\'ope…

Probing the Physics of Dusty Outflows through Complex Organic Molecules in the Early Universe
Galaxy-scale outflows are of critical importance for galaxy formation and evolution. Dust grains are the main sites for the formation of molecules needed for star formation but are also important for the acceleration of outflows that can remove the gas reservoir critical for stellar mass growth. Using the MIRI medium-resolution integral field spectrograph aboard the James Webb Space Telescope (JWST), we detect the 3.28 $μ$m aromatic and the 3.4 $μ$m aliphatic hydrocarbon dust features in abso…

Once again Congress chickens out and lets El Presidente Naranja steal resources that have been allocated for a distinct purpose (and paid for with taxpayer dollars appropriated for that purpose).
This is our money - yours and mine - that is being stolen.
https://www.theguardian.com/us-news…

CEPC Technical Design Report -- Reference Detector
The CEPC Study Group
https://arxiv.org/abs/2510.05260 https://arxiv.org/pdf/2510.05260

CEPC Technical Design Report -- Reference Detector
The Circular Electron Positron Collider (CEPC) is a large international scientific project initiated by China's particle physicists to study the Higgs boson and perform critical tests of the Standard Model. Housed in a 100-km circumference tunnel in China, the CEPC will primarily operate as a Higgs factory, producing electron-positron collisions at a center-of-mass energy of 240 GeV. It will also function as a Z factory at 91.2 GeV and operate at the WW production threshold (around 160 GeV). In…

From Earthbound to Stars: Analyzing Humanity's Path to a Type II Civilization
Jonathan H. Jiang, Prithwis Das
https://arxiv.org/abs/2510.03249 https://…

From Earthbound to Stars: Analyzing Humanity's Path to a Type II Civilization
Humanity is at a critical juncture, marked by rapid technological advances and the pursuit of higher civilization stages on the Kardashev scale. This study explores humanity's potential progression toward Type I and Type II civilizations, defined by planetary and stellar-scale energy utilization. Building on Kardashev's framework, we propose refinements that integrate energy consumption, information processing, construction mass, and population dynamics. Using machine learning, we analyze globa…

A controllable anti-P-pseudo-Hermitian mechanical system and its application
Yanzheng Wang (Huanjiang Laboratory, Zhejiang University, Department of Mechanical and Aerospace Engineering, University of Missouri), Jianlei Zhao (Department of Mechanics and Engineering Science, Peking University), Qian Wu (Department of Mechanical and Aerospace Engineering, University of Missouri), Xiaoming Zhou (Key Laboratory of Dynamics and Control of Flight Vehicle of Ministry of Education, School of A…

A controllable anti-P-pseudo-Hermitian mechanical system and its application
A novel anti-P-pseudo-Hermitian mechanical system that integrates piezoelectric actuators and sensors with non-reciprocal coupling into mechanical beams is proposed. This configuration enables the system to exhibit programmable exceptional points (EPs), which are critical for enhancing sensitivity in sensing applications. Our theoretical analysis, supported by numerical simulations and experimental validation, demonstrates the system's capability to detect minute mass variations and identify su…

Pep2Prob Benchmark: Predicting Fragment Ion Probability for MS$^2$-based Proteomics
Hao Xu, Zhichao Wang, Shengqi Sang, Pisit Wajanasara, Nuno Bandeira
https://arxiv.org/abs/2508.21076

Pep2Prob Benchmark: Predicting Fragment Ion Probability for MS$^2$-based Proteomics
Proteins perform nearly all cellular functions and constitute most drug targets, making their analysis fundamental to understanding human biology in health and disease. Tandem mass spectrometry (MS$^2$) is the major analytical technique in proteomics that identifies peptides by ionizing them, fragmenting them, and using the resulting mass spectra to identify and quantify proteins in biological samples. In MS$^2$ analysis, peptide fragment ion probability prediction plays a critical role, enhanc…

$T \times \mu$ phase diagram from a fractal NJL model
E. Megias, A. Deppman, V. S. Tim\'oteo
https://arxiv.org/abs/2509.08396 https://arxiv.org/pdf/250…

$T \times μ$ phase diagram from a fractal NJL model
We propose a $μ$-dependent coupling for a fractal effective model (FNJL) to make the results for the phase diagram compatible with the experimental data and lattice QCD calculations. The $μ$-dependence of the coupling, which accounts for gluon effects, is obtained by fitting the lattice QCD results for the pseudo-critical temperature with the fractal model. We then use the new effective coupling in order to compute the dynamical mass, the quark condensate, the thermal susceptibility and, fina…

MEMS chip-based single proof-mass triaxial fiber-optic accelerometer with ultra-low noise level
Chaoyue Liu, Ping Lu
https://arxiv.org/abs/2508.18981 https://

MEMS chip-based single proof-mass triaxial fiber-optic accelerometer with ultra-low noise level
High-precision triaxial acceleration detection holds critical applications in seismic wave detection, geological resource exploration, and aerospace systems. Fabry-Perot (FP) optical sensors have gained widespread adoption in these domains due to their compact footprint and immunity to electromagnetic interference. Nevertheless, conventional three-axis measurements predominantly rely on assembling multiple single-axis transducers, introducing limitations such as increased device volume and misa…

The Small Magellanic Cloud through the lens of the James Webb Space Telescope : binaries and mass function within the galaxy outskirts
M. V. Legnardi, F. Muratore, A. P. Milone, G. Cordoni, T. Ziliotto, E. Dondoglio, A. F. Marino, A. Mastrobuono-Battisti, E. Bortolan, E. P. Lagioia, M. Tailo
https://arxiv.org/abs/2509.08687

The Small Magellanic Cloud through the lens of the James Webb Space Telescope : binaries and mass function within the galaxy outskirts
The stellar initial mass function (IMF) and the fraction of binary systems are fundamental ingredients that govern the formation and evolution of galaxies. Whether the IMF is universal or varies with environment remains one of the central open questions in astrophysics. Dwarf galaxies such as the Small Magellanic Cloud (SMC), with their low metallicity and diffuse star-forming regions, offer critical laboratories to address this issue. In this work, we exploit ultra-deep photometry from the Jam…

wir hatten heute bei der Critical Mass in Stuttgart Besuch von einer Giraffe und einem Bären. 🤩 🐻🦒
#CriticalMass #Stuttgart #Nebeneinandem

Extremely diverse coronal jets accompanying an erupting filament captured by Solar Orbiter
Song Tan, Alexander Warmuth, Fr\'ed\'eric Schuller, Yuandeng Shen, Jake A. J. Mitchell, Fanpeng Shi
https://arxiv.org/abs/2509.04741

Extremely diverse coronal jets accompanying an erupting filament captured by Solar Orbiter
Solar jets are collimated plasma ejections driven by magnetic reconnection, which play a critical role in the energy release and mass transport in the solar atmosphere. Using Solar Orbiter's Extreme Ultraviolet Imager (EUI) with its unprecedented spatiotemporal resolution, we report the discovery of nine transient coronal jets associated with a filament eruption on September 30, 2024. These jets, with a median lifetime of only 22 seconds, have significantly shorter timescales than previously ob…

How many more is different?
Jacob Calvert, Andr\'ea W. Richa, Dana Randall
https://arxiv.org/abs/2510.06011 https://arxiv.org/pdf/2510.06011

How many more is different?
From the formation of ice in small clusters of water molecules to the mass raids of army ant colonies, the emergent behavior of collectives depends critically on their size. At the same time, common wisdom holds that such behaviors are robust to the loss of individuals. This tension points to the need for a more systematic study of how number influences collective behavior. We initiate this study by focusing on collective behaviors that change abruptly at certain critical numbers of individuals…

Amplified magnetic catalysis in non-Hermitian Euclidean and hyperbolic Dirac liquids
Christopher A. Leong, Bitan Roy
https://arxiv.org/abs/2510.02304 https://

Amplified magnetic catalysis in non-Hermitian Euclidean and hyperbolic Dirac liquids
Due to their iconic linearly vanishing density of states near the zero-energy, half-filled two-dimensional Dirac materials in flat Euclidean and negatively-curved hyperbolic spaces exhibit dynamic mass generation only once a critical interaction strength is surpassed. Application of external magnetic fields onto these systems can, however, trigger the formation of such ordered phases yielding isotropic insulation near the band-center at arbitrarily weak coupling, a phenomenon known as magnetic …

A critical analysis of the recent OGLE limits on stellar mass primordial black holes in the halo of the Milky Way
M. R. S. Hawkins, J. Garc\'ia-Bellido
https://arxiv.org/abs/2509.05400

A critical analysis of the recent OGLE limits on stellar mass primordial black holes in the halo of the Milky Way
This paper is a response to recent claims that a population of primordial black holes in the Galactic halo has been ruled out by the OGLE collaboration. This claim was based on the latest results from the OGLE microlensing survey towards the Large Magellanic Cloud which failed to detect even the number of events expected from known stellar populations. In particular, their results are completely inconsistent with the results of the MACHO survey which detected a population of compact bodies in t…

heute mit drei Tallbikes auf der Critical Mass in Stuttgart mitgefahren. :-)
Die "normalen" Räder sind aber immer noch deutlich in der Überzahl.
#Tallbike #Hexabike #CriticalMass

Revising the Giant Planet Mass-Metallicity Relation: Deciphering the Formation Sequence of Giant Planets
Yayaati Chachan, Jonathan J. Fortney, Kazumasa Ohno, Daniel Thorngren, Ruth Murray-Clay
https://arxiv.org/abs/2509.20428

Revising the Giant Planet Mass-Metallicity Relation: Deciphering the Formation Sequence of Giant Planets
The rate at which giant planets accumulate solids and gas is a critical component of planet formation models, yet it is extremely challenging to predict from first principles. Characterizing the heavy element (everything other than hydrogen and helium) content of giant planets provides important clues about their provenance. Using thermal evolution models with updated H-He EOS and atmospheric boundary condition that varies with envelope metallicity, we quantify the bulk heavy element content of…

Construction of blow-up solution with minimal mass for 2D cubic Zakharov--Kuznetsov equation
Yang Lan, Xu Yuan
https://arxiv.org/abs/2508.16960 https://arx…

Construction of blow-up solution with minimal mass for 2D cubic Zakharov--Kuznetsov equation
In this article, we construct a minimal mass blow-up solution of the two-dimensional cubic (mass-critical) Zakharov--Kuznetsov equation: \begin{equation*} \partial_t ϕ+\partial_{x_1}(Δϕ+ϕ^3)=0,\quad (t,x)\in [0,\infty)\times \mathbb{R}^2. \end{equation*} Let $s>\frac{3}{4}$. Bhattacharya-Farah-Roudenko [2] show that $H^{s}$ solutions with $\|ϕ\|_{L^{2}}<\|Q\|_{L^{2}}$ are global in time. For such low regularity solutions, we study the dynamics at the threshold $…

Crosslisted article(s) found for astro-ph.CO. https://arxiv.org/list/astro-ph.CO/new
[1/1]:
- A critical analysis of the recent OGLE limits on stellar mass primordial black holes in the halo ...
M. R. S. Hawkins, J. Garc\'ia-Bellido

Constraining the Neutron-Star Equation of State via Short Gamma-Ray Burst X-ray Afterglows
R. Moradi, Y. Wang, F. Rastegarnia, E. S. Yorgancioglu, Shu-Xu Yi, B. Eslam Panah, S. N. Zhang
https://arxiv.org/abs/2510.01872

Constraining the Neutron-Star Equation of State via Short Gamma-Ray Burst X-ray Afterglows
Recent observations from NICER in X-rays and LIGO/Virgo in gravitational waves have provided critical constraints on the mass, radius, and tidal deformability of neutron stars, imposing stringent limits on the equation of state (EOS) and the behavior of ultra-dense matter. However, several key parameters influencing the EOS, such as the maximum mass of neutron stars, spin-down rates, and the potential role of exotic matter in their cores, remain subject of ongoing debate. Here we present a new …

An InAsSb surface quantum well with in-situ deposited Nb as a platform for semiconductor-superconductor hybrid devices
Sjoerd Telkamp, Zijin Lei, Tommaso Antonelli, Christian Reichl, Ilya Besedin, Georg Jakobs, Stefan F\"alt, Christian Marty, R\"udiger Schott, Werner Wegscheider
https://arxiv.org/abs/2510.00711

An InAsSb surface quantum well with in-situ deposited Nb as a platform for semiconductor-superconductor hybrid devices
We present a novel semiconductor-superconductor hybrid material based on a molecular beam epitaxially grown InAsSb surface quantum well with an in-situ deposited Nb top layer. Relative to conventional Al-InAs based systems, the InAsSb surface quantum well offers a lower effective mass and stronger spin-orbit interaction, while the Nb layer has a higher critical temperature and a larger critical magnetic field. The in-situ deposition of the Nb results in a high-quality interface that enables str…

A Framework for Optimal Ankle Design of Humanoid Robots
Guglielmo Cervettini, Roberto Mauceri, Alex Coppola, Fabio Bergonti, Luca Fiorio, Marco Maggiali, Daniele Pucci
https://arxiv.org/abs/2509.16469 …

A Framework for Optimal Ankle Design of Humanoid Robots
The design of the humanoid ankle is critical for safe and efficient ground interaction. Key factors such as mechanical compliance and motor mass distribution have driven the adoption of parallel mechanism architectures. However, selecting the optimal configuration depends on both actuator availability and task requirements. We propose a unified methodology for the design and evaluation of parallel ankle mechanisms. A multi-objective optimization synthesizes the mechanism geometry, the resulting…

Hydrogen-deficient binary stars with magnetic braking
David A. Bour, Avishai Gilkis, Christopher A. Tout
https://arxiv.org/abs/2509.03412 https://arxiv.org…

Hydrogen-deficient binary stars with magnetic braking
Hydrogen-deficient binary stars comprise one star which has been stripped of its hydrogen through mass transfer to a binary companion. Observations show that the companion is able to accrete several solar masses without spinning up to critical rotation, and so there must be a mechanism to drain spin angular momentum from the accretor. We test magnetically coupled winds and magnetic star-disc coupling as possible mechanisms and find that, while the disc coupling is negligible, the winds are suff…

Euler's elastica functional as a large mass limit of a two-dimensional non-local isoperimetric problem
Cyrill B. Muratov, Matteo Novaga, Theresa M. Simon
https://arxiv.org/abs/2508.18894

Euler's elastica functional as a large mass limit of a two-dimensional non-local isoperimetric problem
We consider a large mass limit of the non-local isoperimetric problem with a repulsive Yukawa potential in two space dimensions. In this limit, the non-local term concentrates on the boundary, resulting in the existence of a critical regime in which the perimeter and the non-local terms cancel each other out to leading order. We show that under appropriate scaling assumptions the next-order $Γ$-limit of the energy with respect to the $L^1$ convergence of the rescaled sets is given by a weighte…

Measuring the Central Dark Mass in NGC 4258 with JWST/NIRSpec Stellar Kinematics
Dieu D. Nguyen, Hai N. Ngo, Michele Cappellari, Tinh Q. T. Le, Tien H. T. Ho, Tuan N. Le, Elena Gallo, Niranjan Thatte, Fan Zou, Michele Perna, Miguel Pereira-Santaella
https://arxiv.org/abs/2509.20519

Measuring the Central Dark Mass in NGC 4258 with JWST/NIRSpec Stellar Kinematics
We present a new stellar dynamical measurement of the supermassive black hole (SMBH) mass in the nearby spiral galaxy NGC 4258, a critical benchmark for extragalactic mass measurements. We use archival JWST/NIRSpec IFU data (G235H/F170LP grating) to extract high-resolution two-dimensional stellar kinematics from the CO bandhead absorption features within the central $3'' \times 3''$. We extract the stellar kinematics after correcting for instrumental artifacts and separating the stellar light f…

Quantum oscillations in two-dimensional hole gases with competing cyclotron and Zeeman energy
Davide Costa, Lucas E. A. Stehouwer, Davide Degli Esposti, Giordano Scappucci
https://arxiv.org/abs/2509.15268

Quantum oscillations in two-dimensional hole gases with competing cyclotron and Zeeman energy
Evaluation of critical bandstructure and quantum transport parameters in two-dimensional systems is challenging when competition emerges among different energy scales shaping quantum oscillations in a magnetic field. Here we overcome this challenge in low-disorder strained germanium quantum wells by evaluating self-consistently effective mass, g-factor, and quantum lifetime. As a result, we estimate a quantum mobility of 133(3)$\times$10$^3$ cm$^2$/Vs, setting a benchmark for 2D holes in group …

On dispersive decay for the generalized Korteweg--de Vries equation
Matthew Kowalski, Minjie Shan
https://arxiv.org/abs/2510.01728 https://arxiv.org/pdf/25…

On dispersive decay for the generalized Korteweg--de Vries equation
We prove pointwise-in-time dispersive estimates for solutions to the generalized Korteweg--de Vries (gKdV) equation. In particular, for solutions to the mass-critical model, we assume only that initial data lie in $\dot{H}^{\frac{1}{4}} \cap \dot{H}^{-\frac{1}{12}}$ and show that solutions decay in $L^\infty$ like $|t|^{-\frac{1}{3}}$. To accomplish this, we develop a persistence of negative regularity for solutions to gKdV and extend Lorentz--Strichartz estimates to the mixed norm ca…

Properties of Chromospheric Fibrils Around a Quiescent Filament
Qifan Dong, Xiaoli Yan, Zhike Xue, Jincheng Wang, Zhe Xu, Liheng Yang, Yian Zhou, Xinsheng Zhang, Zongyin Wu, Guotang Wu
https://arxiv.org/abs/2509.18646

Properties of Chromospheric Fibrils Around a Quiescent Filament
Fibrils are dynamic plasma structures in the solar chromosphere. Studying these structures is critical for understanding solar atmospheric heating and mass transportation. The purpose of this study is to obtain the characteristics of fibrils surrounding the filament. By employing high-resolution H-alpha data obtained from the New Vacuum Solar Telescope (NVST), we undertake a detailed analysis of the properties of 63 fibrils situated in the vicinity of the filament. Comparing the fibrils on both…

Dynamical Masses for 23 Pre-Main Sequence Stars in Upper Scorpius: A Critical Test of Stellar Evolutionary Models
A. P. M. Towner, J. A. Eisner, P. D. Sheehan, L. A. Hillenbrand, Y. -L. Wu
https://arxiv.org/abs/2509.23001

Dynamical Masses for 23 Pre-Main Sequence Stars in Upper Scorpius: A Critical Test of Stellar Evolutionary Models
We present dynamical masses for 23 pre-main sequence K- and M-type stars in the Upper Scorpius star-forming region. These masses were derived from the Keplerian rotation of CO disk gas using the MCMC radiative-transfer package pdspy and a flared-disk model with 15 free parameters. We compare our dynamical masses to those derived from five pre-main sequence evolutionary models, and find that most models consistently underestimate stellar mass by $\gtrsim$25%. Models with updated treatment of ste…

A numerical study of stability for solitary waves of a quasi-linear Schr{\"o}dinger equation
Meriem Bahhi (LJAD), Jonas Lampart (ICB), Christian Klein (IUF), Simona Rota Nodari (LJAD, IUF)
https://arxiv.org/abs/2509.02236

A numerical study of stability for solitary waves of a quasi-linear Schr{ö}dinger equation
We discuss the (in)stability of solitary waves for a quasi-linear Schr{ö}dinger equation. The equation contains a quasi-linear term, responsible for a saturation effect, as well as a power nonlinearity. For different exponents of the nonlinearity, we determine analytically the asymptotic behavior of the $L^2$-mass of the solution as a function of the frequency close to the critical frequencies, which leads to natural conjectures concerning their stability. Depending on the exponent and the dim…