Tootfinder

You don't want to miss today's extra-packed Metacurity for the most critical infosec developments you should know today, including
--Microsoft enabled Israeli spy agency's mass surveillance of Palestinians' mobile calls,
--Cisco's registered web users disclosed in a likely Salesforce breach-related vishing attack,
--Google confirms customer theft in Salesforce breach-related incident,
--Broadcom chip flaw exposes millions of Dell laptops to attack, …

Microsoft enabled Israeli spy agency's mass surveillance of Palestinians' mobile calls
Cisco's registered web users disclosed in a likely Salesforce breach-related vishing attack, Google confirms customer theft in Salesforce breach-related incident, Broadcom chip flaw exposes millions of Dell laptops to attack, MSFT's Project Ire can ID malware with AI, much more

Peaking into the abyss: Characterizing the merger of equatorial-eccentric-geodesic plunges in rotating black holes
Guglielmo Faggioli, Maarten van de Meent, Alessandra Buonanno, Gaurav Khanna
https://arxiv.org/abs/2507.05870

Peaking into the abyss: Characterizing the merger of equatorial-eccentric-geodesic plunges in rotating black holes
We study the gravitational waveforms generated by critical, equatorial plunging geodesics of the Kerr metric that start from an unstable-circular-orbit, which describe the test-mass limit of spin-aligned eccentric black-hole mergers. The waveforms are generated employing a time-domain Teukolsky code. We span different values of the Kerr spin $-0.99 \le a \le 0.99 $ and of the critical eccentricity $e_c$, for bound ($0 \le e_c<1$) and unbound plunges ($e_c \ge 1$). We find that, contrary to expe…

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…

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

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

Quintessence-Chameleon transitions in anisotropic Kiselev model of neutron stars
M. V. Pradosh Keshav (Christ University, Bangalore), V. Jithesh (Christ University, Bangalore), Kenath Arun (Christ University, Bangalore)
https://arxiv.org/abs/2508.04744

Quintessence-Chameleon transitions in anisotropic Kiselev model of neutron stars
We investigate a chameleon scalar field dynamically interacting with a Kiselev-type metric, where the static anisotropic fluid part of the metric is replaced by a density-dependent scalar field non-minimally coupled to curvature. This construction enables a transition from screened behavior in high-density regions-where the scalar acquires an effective mass m_ϕ\proptoρ^1/2-to unscreened quintessence dynamics at large scales, characterized by a critical screening radius r_\rm crit\propto m_ϕ^…

Quark mass dependence of a QCD critical point and structure of the Columbia plot
Julian Bernhardt, Christian S. Fischer
https://arxiv.org/abs/2507.21680 https://

Quark mass dependence of a QCD critical point and structure of the Columbia plot
We study the quark-mass dependence of the QCD critical point at varying bare up/down quark masses with fixed strange quark mass. We explore the corresponding second-order critical surface in the three-dimensional Columbia plot and study the extension of the associated crossover hyperplane at real and imaginary baryon chemical potential. To this end, we employ a by now well-tested combination of lattice Yang--Mills theory and a (truncated) version of Dyson--Schwinger equations at $N_f=2+1$ quark…

Ukraine announced on June 13 that its short-range Sapsan ballistic missile would go into mass production
-- a major development in Kyiv's ongoing efforts to domestically produce the weapons it needs to fight Russia's full-scale invasion.
As Ukraine faces growing challenges in securing weapons from Western partners, and Russia continues launching drone and missile strikes on civilians, the development of Ukraine’s missile production is seen as a critical step toward strength…

Tired of military aid delays, Ukraine has designed its own ballistic missile — and it’s already in mass-production
Ukraine announced on June 13 that it's short-range Sapsan ballistic missile would go into mass production, a major development in Kyiv's ongoing efforts to domestically produce the weapons it needs to fight Russia's full-scale invasion. As Ukraine faces growing challenges in securing weapons from Western partners, and Russia continues launching drone and missile strikes on civilians, the development of Ukraine’s missile production is seen as a critical step toward strengthening its defense c…

Normalized ground states for NLS equations with mass critical nonlinearities
Silvia Cingolani, Marco Gallo, Norihisa Ikoma, Kazunaga Tanaka
https://arxiv.org/abs/2507.00639

Normalized ground states for NLS equations with mass critical nonlinearities
We study normalized solutions $(μ,u)\in \mathbb{R} \times H^1(\mathbb{R}^N)$ to nonlinear Schrödinger equations $$ -Δu + μu = g(u)\quad \hbox{in}\ \mathbb{R}^N, \qquad \frac{1}{2}\int_{\mathbb{R}^N} u^2 dx = m, $$ where $N\geq 2$ and the mass $m>0$ is given. Here $g$ has an $L^2$-critical growth, both in the origin and at infinity, that is $g(s)\sim |s|^{p-1}s$ as $s\sim 0$ and $s\sim\infty$, where $p=1+\frac{4}{N}$. We continue the analysis started in [Cingolani-Gallo-Ikoma-Tan…

Anomalous dimensions and critical exponents for the Gross-Neveu-Yukawa model at five loops
J. A. Gracey, A. Maier, P. Marquard, Y. Schr\"oder
https://arxiv.org/abs/2507.22594

Anomalous dimensions and critical exponents for the Gross-Neveu-Yukawa model at five loops
We renormalize the Gross-Neveu-Yukawa model with an $O(N)$ symmetry to $\mathcal{O}(ε^5)$ in $d=4-ε$ dimensions and determine the anomalous dimensions of the fermion and scalar fields, $β$-functions as well as the scalar field's mass operator. These are used to construct several $N$ dependent critical exponents relevant for quantum transitions in semi-metals and in particular those connected with graphene in three dimensions when $N=2$. Improved exponent estimates for scalar fermion transiti…

Measurement of Born Cross Sections and Effective Form Factors of $e^ e^-\to \Omega^{-}\bar{\Omega}^{ }$ from$\sqrt{s}$ = 3.7 to 4.7 GeV
BESIII Collaboration, et al.
https://arxiv.org/abs/2508.01359

Measurement of Born Cross Sections and Effective Form Factors of $e^+e^-\to Ω^{-}\barΩ^{+}$ from$\sqrt{s}$ = 3.7 to 4.7 GeV
Using $e^+e^-$ collision data corresponding to an integrated luminosity of 22.7 fb$^{-1}$, collected at center-of-mass energies between 3.7 and 4.7 GeV with the BESIII detector at the BEPCII storage ring, we measure the energy-dependent Born cross sections of $e^+e^-\to Ω^{-}\barΩ^+$ and the effective form factors of the $Ω^-$ baryon. The analysis employs a single baryon tagging method, and the results are consistent with theoretical predictions, providing critical constraints on the electro…

Does this company have a whacky sense of humour, or are they extremely opportunistic - or perhaps both?
This ad came up when I did a search on a medical term I was unfamiliar with:

An upper bound of the lower tail of the mass of balls under the critical $2d$ stochastic heat flow
Makoto Nakashima
https://arxiv.org/abs/2507.18080 https://

An upper bound of the lower tail of the mass of balls under the critical $2d$ stochastic heat flow
We study the critical two-dimensional stochastic heat flow $\mathscr{Z}_t^{\vartheta}$, recently constructed as the scaling limit of directed polymers in a random environment and as the limit of the solution to a mollified stochastic heat equation. Focusing on the mass of balls $\mathscr{Z}_t^{\vartheta}(B_r(0),B_r(a))$ ($a\in \mathbb{R}^2$, $r>0$), we establish an upper bound on its lower tail. As a consequence, we prove the integrability of the logarithm of $\mathscr{Z}_t^{\vartheta}(B_r(0),B…

Structure-preserving deflation of critical eigenvalues in quadratic eigenvalue problems associated with damped mass-spring systems
Rafikul Alam, Volker Mehrmann, Ninoslav Truhar
https://arxiv.org/abs/2507.16024

Structure-preserving deflation of critical eigenvalues in quadratic eigenvalue problems associated with damped mass-spring systems
For a quadratic matrix polynomial associated with a damped mass-spring system there are three types of critical eigenvalues, the eigenvalues $\infty$ and $0$ and the eigenvalues on the imaginary axis. All these are on the boundary of the set of (robustly) stable eigenvalues. For numerical methods, but also for (robust) stability analysis, it is desirable to deflate such eigenvalues by projecting the matrix polynomial to a lower dimensional subspace before computing the other eigenvalues and eig…

A Deep Learning Approach to Identify Rock Bolts in Complex 3D Point Clouds of Underground Mines Captured Using Mobile Laser Scanners
Dibyayan Patra, Pasindu Ranasinghe, Bikram Banerjee, Simit Raval
https://arxiv.org/abs/2506.20464

A Deep Learning Approach to Identify Rock Bolts in Complex 3D Point Clouds of Underground Mines Captured Using Mobile Laser Scanners
Rock bolts are crucial components of the subterranean support systems in underground mines that provide adequate structural reinforcement to the rock mass to prevent unforeseen hazards like rockfalls. This makes frequent assessments of such bolts critical for maintaining rock mass stability and minimising risks in underground mining operations. Where manual surveying of rock bolts is challenging due to the low light conditions in the underground mines and the time-intensive nature of the proces…

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…

Is there any new critical mass in Tampere? #KriittinenPyöräretki #CriticalMass #Tampere

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…

Here we go.
1- thoughts and prayers
2- not the time to talk about gun control
3- teachers should be armed
4- wait for next distracting headline event
5- nothing.
https://mastodon.archive.org/@tv/115101806412344977

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…

Dynamics of low-mass black hole seeds in the BRAHMA simulations using subgrid-dynamical friction: Impact on merger-driven black hole growth in the high redshift Universe
Aklant K. Bhowmick, Laura Blecha, Luke Z. Kelley, Aneesh Sivasankaran, Paul Torrey, Rainer Weinberger, Nianyi Chen, Mark Vogelsberger, Lars Hernquist, Priyamvada Natarajan
https://…

Dynamics of low-mass black hole seeds in the BRAHMA simulations using subgrid-dynamical friction: Impact on merger-driven black hole growth in the high redshift Universe
We analyze the dynamics of low-mass black hole (BH) seeds in the high-redshift ($z\gtrsim5$) Universe using a suite of $[4.5~\mathrm{Mpc}]^3$ and $[9~\mathrm{Mpc}]^3$ BRAHMA cosmological hydrodynamic simulations. The simulations form seeds with mass $M_{\mathrm{seed}}=2.2\times10^3~M_{\odot}$ in halos that exceed critical thresholds of dense & metal-poor gas mass ($5-150~M_{\mathrm{seed}}$) and the halo mass ($1000-10000~M_{\mathrm{seed}}$). While the initial BRAHMA boxes pinned the BHs to the …

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…

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…

Today I rode with the Critical Mass. #bicycle

Multiple solutions for Schr{\"o}dinger-Poisson-Slater equations with critical growth
Shibo Liu
https://arxiv.org/abs/2507.00295 https://

Multiple solutions for Schr{ö}dinger-Poisson-Slater equations with critical growth
We obtain multiple solutions for the zero mass Schr{ö}dinger-Poisson-Slater equation \[ - Δu + \left( \frac{1}{4 π| x |} \ast u^2 \right) u = λg (x) | u |^{p - 2} u + | u |^{6 - 2} u \text{, \ \ \ \ } u \in \mathcal{D}^{1, 2} (\mathbb{R}^3) \text{} \] for $λ\gg 1$, where $p \in (4, 6)$ and $g \in L^{6 / (6 - p)} (\mathbb{R}^3)$. The crucial (PS)$_c$ condition is verified using a simpler method. Similar multiplicity result is also obtained for related equation …

Locating the QCD critical point with neutron-star observations
Christian Ecker, Niko Jokela, Matti J\"arvinen
https://arxiv.org/abs/2506.10065 https:/…

Locating the QCD critical point with neutron-star observations
We present a probabilistic model for the QCD critical endpoint (CEP) and the equation of state (EOS) at $β$-equilibrium, constrained by neutron-star observations. Using a hybrid framework that combines the holographic V-QCD model with an effective van der Waals description of nuclear matter, we generate a large ensemble of EOSs incorporating nuclear theory uncertainties. Constraining this ensemble with neutron-star mass-radius data and tidal deformability measurements from gravitational waves,…

An elementary method to determine the critical mass of a sphere of fissile material based on a separation of neutron transport and nuclear reaction processes
Steven K. Lamoreaux
https://arxiv.org/abs/2506.06927

An elementary method to determine the critical mass of a sphere of fissile material based on a separation of neutron transport and nuclear reaction processes
A simplified method to calculate the critical mass of a fissile material sphere is presented. This is a purely pedagogical study, in part to elucidate the historical evolution of criticality calculations. This method employs only elementary calculus and straightforward statistical arguments by formulating the problem in terms of the threshold condition that the number of neutrons in the sphere does not change with time; the average neutron path length in the material must be long enough to prod…

Heute abend #CriticalMass Fahrraddemo in #BietigheimBissingen Treffpunkt Festplatz am Viadukt.
https://www.

JUNO 20-inch PMT and electronics system characterization using large pulses of PMT dark counts at the Pan-Asia testing platform
Caimei Liu, Min Li, Narongkiat Rodphai, Zhimin Wang, Jun Hu, Nikolay Anfimov, Lei Fan, Alberto Garfagnini, Guanghua Gong, Shaojing Hou, Xiaolu Ji, Xiaoshan Jiang, Denis Korablev, Tobias Lachenmaier, Si Ma, Xiaoyan Ma, Zhe Ning, Alexander G. Olshevskiy, Zhaoyuan Peng, Zhonghua Qin, Tobias Sterr, Yunhua Sun, Alexander Felix Tietzsch, Jun Wang, Wei Wang, Yangfu W…

JUNO 20-inch PMT and electronics system characterization using large pulses of PMT dark counts at the Pan-Asia testing platform
The main goal of the JUNO experiment is to determine the neutrino mass ordering with a 20kt liquid-scintillator detector. The 20-inch PMT and its 1F3 (one for three) electronics are crucial to realize the excellent energy resolution of at least 3% at 1MeV. The knowledge on the PMT and 1F3 electronics response is critical for detector performance understanding. A study of the JUNO 20-inch PMT and 1F3 electronics system characterization is presented using large pulses of PMT dark count at the Pan…

Asymptotic behavior of mass-critical Schr\"odinger equation in $ \mathbb{R}$
Fanfei Meng, Yilin Song, Ruixiao Zhang
https://arxiv.org/abs/2507.17463 https://

Asymptotic behavior of mass-critical Schrödinger equation in $ \mathbb{R}$
In this paper, we study the long-time behavior for the mass-critical nonlinear Schrödinger equation on the line \[ i\partial_t u + \partial_x^2 u = |u|^4 u, u(0, x) = u_0 \in L_x^2(\Bbb R). \] The global well-posedness and scattering for this equation was solved in Dodson [Amer. J. Math. (2016)]. Inspired by the pioneering work of Killip-Visan-Zhang [Amer. J. Math. (2021)], we show that solution can be approximated by a finite-dimensional Hamiltonian system. This system is th…

Efficient rare event estimation for multimodal and high-dimensional system reliability via subset adaptive importance sampling
Sara Helal, Victor Elvira
https://arxiv.org/abs/2508.00210

Efficient rare event estimation for multimodal and high-dimensional system reliability via subset adaptive importance sampling
Estimating rare events in complex systems is a key challenge in reliability analysis. The challenge grows in multimodal problems, where traditional methods often rely on a small set of design points and risk overlooking critical failure modes. Further, higher dimensions make the probability mass harder to capture and demand substantially larger sample sizes to estimate failures. In this work, we propose a new sampling strategy, subset adaptive importance sampling (SAIS), that combines the stren…

CECILIA: Ultra-Deep Rest-Optical Spectra of Faint Galaxies at Cosmic Noon
Menelaos Raptis, Ryan F. Trainor, Allison L. Strom, Gwen C. Rudie, Noah S. J. Rogers, Charles C. Steidel, Michael V. Maseda, Caroline von Raesfeld, Nathalie A. Korhonen Cuestas
https://arxiv.org/abs/2507.22237

CECILIA: Ultra-Deep Rest-Optical Spectra of Faint Galaxies at Cosmic Noon
Intrinsically faint galaxies at $z\sim2-3$ offer critical insights into early galaxy formation, tracing low-metallicity, low-mass systems during Cosmic Noon and serving as analogs to reionization-era galaxies. We present ultra-deep JWST/NIRSpec spectroscopy of nine low-luminosity galaxies ($-17 \lesssim M_{\rm UV} \lesssim -20$, $M_\star \lesssim 10^9\,M_\odot$) at $z\sim2.5$ from the CECILIA program, with $\sim$29.5 hr in G235M/F170LP and 1 hr in G395M/F290LP. Our sample includes four LAEs, th…

Refining Tc Prediction in Hydrides via Symbolic-Regression-Enhanced Electron-Localization-Function-Based Descriptors
Francesco Belli, Sean Torres, Julia Contreras-Garc\`ia, Eva Zurek
https://arxiv.org/abs/2506.17456

Refining Tc Prediction in Hydrides via Symbolic-Regression-Enhanced Electron-Localization-Function-Based Descriptors
Hydrogen-based materials are able to possess extremely high superconducting critical temperatures, \tc s, due to hydrogen's low atomic mass and strong electron-phonon interaction. Recently, a descriptor based on the Electron Localization Function (ELF) has enabled the rapid estimation of the \tc\ of hydrogen-containing compounds from electronic networking properties, but its applicability has been limited by the small size and homogeneity of the training dataset used. Herein, the model is re-ex…

Mass threshold for global existence in chemotaxis systems with critical flux limitation
Xuan Mao, Hengling Wang, Jianlu Yan
https://arxiv.org/abs/2507.19866 https://

Mass threshold for global existence in chemotaxis systems with critical flux limitation
This paper investigates the flux-limited chemotaxis system, proposed by Kohatsu and Senba~(2025), \begin{equation*} \begin{cases} u_t = Δu -\nabla\cdot(u|\nabla v|^{α-2}\nabla v),\\ \:\:0=Δv + u, \end{cases} \end{equation*} posed in the unit ball of $\mathbb{R}^N$ for some $N\geq2$, subject to no-flux and homogeneous Dirichlet boundary conditions. Due to precedents, e.g., Tello (2022) and Winkler (2022), the exponent $α= \frac{N}{N-1}$ is the threshold for finite-time blow-up …

Anomalous scaling of linear power corrections
Casey Farren-Colloty, Jack Helliwell, Rtvik Patel, Gavin P. Salam, Silvia Zanoli
https://arxiv.org/abs/2507.18696 https://

Anomalous scaling of linear power corrections
Non-perturbative corrections to hadronic observables represent a critical obstacle to increasing accuracy at colliders. Long taken to scale simply as $1/Q$, where $Q$ is the centre-of-mass scattering energy, recent work has opened the path towards calculating the anomalous dimension that modifies that scaling. A priori, the problem is complex, requiring a resummation involving arbitrary numbers of large-angle and low-energy gluons. Within a specific framework for kinematic recoil, we show that …

A generalized semi-analytic model for the combined outflow from a cluster of stars with strong stellar winds
Stan Owocki
https://arxiv.org/abs/2507.18721 https://

A generalized semi-analytic model for the combined outflow from a cluster of stars with strong stellar winds
We derive semi-analytic solutions for the thermally driven cumulative outflow from a dense stellar cluster that consists of a large number of stars with strong stellar winds, under the key assumption that their mass and energy deposition can be treated as a continuous source of thermalized wind material. Our approach provides explicit analytic forms for the flow critical radius and sound speed, which then allows for full solution by inward/outward integration from this critical radius. Applicat…

Blow-up construction and instability for mass-critical half-wave equation with slightly superthreshold mass
Jeongheon Park, Soonsik Kwon, Taegyu Kim
https://arxiv.org/abs/2508.07787

Blow-up construction and instability for mass-critical half-wave equation with slightly superthreshold mass
We study the blow-up dynamics for the $L^2$-critical focusing half-wave equation on the real line, a nonlocal dispersive PDE arising in various physical models. As in other mass-critical models, the ground state solution becomes a threshold between the global well-posedness and the existence of a blow-up. The first blow-up construction is due to Krieger, Lenzmann and Raphaël, in which they constructed the minimal mass blow-up solution at the threshold mass. In this paper, we construct finite-t…

Optics design of the Super Tau-Charm Facility collider rings
Ye Zou, Linhao Zhang, Tao Liu, Penghui Yang, Weiwei Li, Tianlong He, Demin Zhou, Kazuhito Ohmi, Sangya Li, Ze Yu, Yihao Mo, Hangzhou Li, Hao Zhou, Jiajun Gao, Zeyuan Meng, Qing Luo, Lei Wang, Youjin Yuan, Jingyu Tang
https://arxiv.org/abs/2507.18924…

Optics design of the Super Tau-Charm Facility collider rings
The Super Tau-Charm Facility (STCF), China's next-generation electron-positron collider, targets an unprecedented luminosity exceeding 5x10^34 cm^-2 s^-1 at a center-of-mass energy of 4 GeV. The implementation of a submillimeter vertical beta function at interaction point (< 1 mm) and crab-waist collision scheme in this low-energy regime introduces critical challenges through severe nonlinear effects that constrain dynamic aperture and degrade Touschek lifetime. To address these constraints, we…

Modeling Uncertainties on the Z Boson Background in the Context of High Precision W Boson Mass Measurements
Maarten Boonekamp, Matthias Schott, Chen Wang
https://arxiv.org/abs/2507.07835

Modeling Uncertainties on the Z Boson Background in the Context of High Precision W Boson Mass Measurements
The precise determination of the $W$ boson mass, $m_W$, is a cornerstone of electroweak precision tests and a critical input to global fits of the Standard Model (SM). While most existing measurements of $m_W$ are in agreement with SM predictions, the recent result from the CDF collaboration exhibits a significant deviation from the SM prediction but also exceeding $4σ$ from the global average of all other high precision measurements. This prompts renewed scrutiny of potential sources of syste…

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 $…

Critical Phenomena in Gravitational Collapse
Carsten Gundlach, David Hilditch, Jos\'e M. Mart\'in-Garc\'ia
https://arxiv.org/abs/2507.07636 htt…

Critical Phenomena in Gravitational Collapse
As first discovered by Choptuik, the black hole threshold in the space of initial data for general relativity shows both surprising structure and surprising simplicity. Universality, power-law scaling of the black hole mass, and scale echoing have given rise to the term ``critical phenomena''. They are explained by the existence of exact solutions which are attractors within the black hole threshold, that is, attractors of codimension one in phase space, and which are typically self-similar. Cr…

I think we are very near critical mass. The pump bay is only barely emptying itself
now. And the pond is gradually overtopping the main part of the weir.
Now to line the top edge of the pond so surface debris only goes through the little inlet.
#poolpond #diy #portalberni #backyardproject

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…

Oscillations of hypothetical strange stars as an efficient source ultra-high-energy particles
Joanna Ja{\l}ocha, {\L}ukasz Bratek
https://arxiv.org/abs/2507.10617

Oscillations of hypothetical strange stars as an efficient source ultra-high-energy particles
We investigate the dynamical behavior of strange quark matter (SQM) objects, such as stars and planets, when subjected to radial oscillations induced by tidal interactions in stellar systems. Our study demonstrates that SQM objects can efficiently convert mechanical energy into hadronic energy due to the critical mass density at their surfaces of 4.7*10^{14} g/cm^3, below which SQM becomes unstable and decays into photons, hadrons, and leptons. We show that even small-amplitude radial oscillati…

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…

Unusually High Gas-to-Dust Ratios Observed in High-Redshift Quiescent Galaxies
Justin S. Spilker, Katherine E. Whitaker, Desika Narayanan, Rachel Bezanson, Sarah Bodansky, Vincenzo R. D'Onofrio, Robert Feldmann, Andy D. Goulding, Jenny E. Greene, Mariska Kriek, Yuanze Luo, David J. Setton, Katherine A. Suess, Arjen van der Wel, Margaret E. Verrico, Christina C. Williams, Charity Woodrum, Po-Feng Wu

Unusually High Gas-to-Dust Ratios Observed in High-Redshift Quiescent Galaxies
Tracking the cold molecular gas contents of galaxies is critical to understand the interplay between star formation and galaxy growth across cosmic time. Observations of the long-wavelength dust continuum, a proxy for the cold gas, are widely used in the high-redshift community because of their ease and efficiency. These measurements rely on the assumption of a molecular gas-to-dust mass ratio, typically taken to be GDR ~ 100 in massive, metal-rich systems. We present Atacama Large Millimeter/s…

MatBYIB: A Matlab-based code for Bayesian inference of extreme mass-ratio inspiral binary with arbitrary eccentricity
Gen-Liang Li, Shu-Jie Zhao, Huai-Ke Guo, Jing-Yu Su, Zhen-Heng Lin
https://arxiv.org/abs/2506.05954

MatBYIB: A Matlab-based code for Bayesian inference of extreme mass-ratio inspiral binary with arbitrary eccentricity
Accurate parameter estimation(PE) of gravitational waves(GW) is essential for GW data analysis. In extreme mass-ratio inspiral binary(EMRI) systems, orbital eccentricity is a critical parameter for PE. However, current software for for PE of GW often neglects the direct estimation of orbital eccentricity. To fill this gap, we have developed the MatBYIB, a MATLAB-based software package for PE of GW with arbitrary eccentricity. The MatBYIB employs the Analytical Kludge (AK) waveform as a computat…

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…

Normalized solutions of coupled Sobolev critical Schrodinger equations with mass subcritical couplings
Zhang Jianjun, Zhong Xuexiu, Zhou Jinfang
https://arxiv.org/abs/2507.13163

Normalized solutions of coupled Sobolev critical Schrodinger equations with mass subcritical couplings
We are concerned with qualitative properties of positive solutions to the following coupled Sobolev critical Schrödinger equations $$ \begin{cases} -Δu+λ_1 u=μ_1|u|^{2^*-2}u+να|u|^{α-2}|v|^βu ~\hbox{in}~ \R^N,\\ -Δv+λ_2 v=μ_2|v|^{2^*-2}v+νβ|u|^α|v|^{β-2}v ~\hbox{in}~ \R^N \end{cases} $$ subject to the mass constraints $\int_{\mathbb{R}^N}|u|^2 \ud x=a^2$ and $\int_{\mathbb{R}^N}|v|^2 \ud x=b^2$, where…

The PGPUC horizontal branch evolutionary tracks
A. A. R. Valcarce (UTA), M. Catelan (PUC-Chile, MAS), S. Alves (UTA), F. Gonzalez-Bordon (UTA)
https://arxiv.org/abs/2506.16562

The PGPUC horizontal branch evolutionary tracks
The horizontal branch (HB) phase of stellar evolution plays a critical role in understanding the life cycle of stars, particularly in the context of low-mass stars. However, generating theoretical evolutionary tracks for HB stars is computationally intensive, especially when attempting to match a wide range of observational data. This work presents an extensive grid of HB evolutionary tracks computed using the PGPUC code, covering a broad range of chemical compositions, progenitor masses, and a…

On the sharp critical mass threshold for the 3D Patlak-Keller-Segel-Navier-Stokes system via Couette flow
Shikun Cui, Lili Wang, Wendong Wang, Juncheng Wei
https://arxiv.org/abs/2506.10578

On the sharp critical mass threshold for the 3D Patlak-Keller-Segel-Navier-Stokes system via Couette flow
As is well-known, the solution of the Patlak-Keller-Segel system in 3D may blow up in finite time regardless of any initial cell mass. In this paper, we are interested in the suppression of blow-up and the critical mass threshold for the 3D Patlak-Keller-Segel-Navier-Stokes system via the Couette flow $(Ay, 0, 0)$. It is proved that if the Couette flow is sufficiently strong ($A$ is large enough), then the solutions for the system are global in time in the periodic domain $(x,y,z)\in\mathbb{T}^…

Light Dark Matter Detection with Sub-eV Transition-Edge Sensors
Muping Chen, Volodymyr Takhistov, Kazunori Nakayama, Kaori Hattori
https://arxiv.org/abs/2506.10070

Light Dark Matter Detection with Sub-eV Transition-Edge Sensors
We present a comprehensive analysis of high-resolution transition-edge sensors (TESs) as a quantum sensing platform for detecting dark matter (DM). Operating near the thermodynamic noise limit with sub-eV energy resolution, TESs offer a powerful approach for probing light DM in the sub-GeV mass range. Optical TESs, realized on superconducting films with critical temperatures below 150 mK, achieve energy thresholds below 100 meV and enable precise calorimetric detection of individual energy depo…

Bar-driven Streaming Motions Mimic a Massive Bulge in the Inner Milky Way
Junichi Baba (Kagoshima U./NAOJ)
https://arxiv.org/abs/2507.12702 https://…

Bar-driven Streaming Motions Mimic a Massive Bulge in the Inner Milky Way
The circular speed curve of the Milky Way provides a key constraint on its mass distribution, reflecting the axisymmetric component of the gravitational potential. This is especially critical in the inner Galaxy ($R \lesssim 4$ kpc), where non-axisymmetric structures such as the stellar bar and nuclear stellar disk strongly influence dynamics. However, significant discrepancies remain between circular speed curves inferred from stellar dynamical modeling and those derived from the terminal-velo…

Radio Killed the Axion Star: Constraining Axion Properties with Radio Telescopes
Patrick J. Fox, Neal Weiner, Huangyu Xiao
https://arxiv.org/abs/2508.08371 https://

Radio Killed the Axion Star: Constraining Axion Properties with Radio Telescopes
Axion dark matter or any ultralight bosonic dark matter can go through Bose-Einstein condensation due to the large phase density, leading to the formation of axion stars or solitons in dark matter halo centers. The formation rate is enhanced in the presence of the substructures expected in the post-inflationary scenario for the QCD axion or axion-like particles. An axion star will continue to grow until a critical mass is reached, after which it collapses and then explodes, with the emission of…

Deflection of light and time delay in hyperbolic Einstein-Straus--de Sitter solution
Mourad Guenouche
https://arxiv.org/abs/2507.11792 https://

Deflection of light and time delay in hyperbolic Einstein-Straus--de Sitter solution
We analyze strong gravitational lensing by a spherically symmetric mass distribution within the Einstein-Straus-de Sitter framework in a spatially open Universe with negative curvature ($k = -1$). Applying the theory to the lensed quasar SDSS J1004+4112, we identify a critical threshold for the current scale factor $a_0$ of approximately $2.6 \times 10^{27}$ m, below which the effects of negative spatial curvature on lensing observables become significant, corresponding to a current curvature d…

The role of young and evolved stars in the heating of dust in local galaxies
Vidhi Tailor, Viviana Casasola, Francesca Pozzi, Francesco Calura, Simone Bianchi, Monica Relano, Jacopo Fritz, Fr\'ed\'eric Galliano, Matteo Bonato, Maritza A. Lara-L\'opez, Evangelos Dimitrios Paspaliaris, Alberto Traina
https://arxiv.org/…

The role of young and evolved stars in the heating of dust in local galaxies
Context. Dust is a fundamental component of the interstellar medium (ISM) and plays a critical role in galaxy evolution. Dust grains influence the ISM by cooling the gas, altering its chemistry, and absorbing stellar radiation, re-emitting it at longer wavelengths in the far-infrared (FIR) and sub-millimeter regimes. The cold dust component, which dominates the dust mass, is primarily heated by stellar radiation, including both young, massive stars and the diffuse emission from older stars. Und…

Normalized solutions for a Sobolev critical quasilinear Schr\"odinger equation
Yuxin Li, Meijie Yang, Xiaojun Chang
https://arxiv.org/abs/2506.10870 h…

Normalized solutions for a Sobolev critical quasilinear Schrödinger equation
In this paper, we study the existence of normalized solutions for the following quasilinear Schrödinger equation with critical exponent: \begin{equation*} -Δu-uΔ(u^2)+λu=τ|u|^{q-2}u+|u|^{2\cdot2^*-2}u,~~~~x\in\R^N, \end{equation*} under the mass constraint $\int_{\R^N}|u|^2dx=c$ for some prescribed $c>0$. Here $τ\in \mathbb{R}$ is a parameter, $λ\in\R$ appears as a Lagrange multiplier, $N\ge3$, $2^*:=\frac{2N}{N-2}$ and $2

The Evolution Of Rotating Supermassive Pop III Stars On The Main Sequence
Devesh Nandal, Ga\"el Buldgen, Daniel J. Whalen, John Regan, Tyrone E. Woods, Jonathan C. Tan
https://arxiv.org/abs/2506.08268

The Evolution Of Rotating Supermassive Pop III Stars On The Main Sequence
The detection of billion-solar-mass supermassive black holes (SMBHs) within the first billion years of cosmic history challenges conventional theories of black hole formation and growth. Simultaneously, recent JWST observations revealing exceptionally high nitrogen-to-oxygen abundance ratios in galaxies at high redshifts raise critical questions about rapid chemical enrichment mechanisms operating in the early universe. Supermassive stars (SMSs) with masses of 1000 to 10000 M$_{\odot}$ are prom…

Multiple normalized solutions for two coupled Gross-Pitaevskii equations with attractive interactions and mass constriants
Zhang Jianjun, Zhong Xuexiu, Zhou Jinfang
https://arxiv.org/abs/2507.13172

Multiple normalized solutions for two coupled Gross-Pitaevskii equations with attractive interactions and mass constriants
We are concerned with the following system of two coupled time-independent Gross-Pitaevskii equations $$ \begin{cases} -Δu+λ_1 u=μ_1|u|^{p-2}u+να|u|^{α-2}|v|^βu ~\hbox{in}~ \R^N,\\ -Δv+λ_2 v=μ_2|v|^{q-2}v+νβ|u|^α|v|^{β-2}v ~\hbox{in}~ \R^N, \end{cases} $$ which arises in two-components Bose-Einstein condensates and involve attractive Sobolev subcritical or critical interactions, i. e., $ν>0$ and $α+β\leq 2^*$. This sys…

Mode stability for self-similar blowup of slightly supercritical NLS: II. high-energy spectrum
Zexing Li
https://arxiv.org/abs/2507.11259 https://

Mode stability for self-similar blowup of slightly supercritical NLS: II. high-energy spectrum
In continuation of the study of the companion work, we prove the high-energy mode stability for linearized operator around self-similar profiles in [Bahri-Martel-Raphaël, 2021] for slightly mass-supercritical NLS in $1 \le d \le 10$. This concludes the asymptotic stability of such self-similar blowup, and answers the question from [Bahri-Martel-Raphaël, 2021] and [Merle-Raphaël-Szeftel, 2010]. As a byproduct, we characterize the spectrum for linearized operator around mass-critical ground st…

Replaced article(s) found for math.AP. https://arxiv.org/list/math.AP/new/
[1/1]:
Non-radial Blow-up for a mass-critical fourth-order inhomogeneous nonlinear Schr\"odinger equation