Tootfinder

Poll: 31% of US adults expect driverless cars to be common within five years, up from 19% in 2018, and 19% say they would own or lease one, the same as in 2018 (Mary Page James/Gallup)
https://news.gallup.com/poll/708683/americans-driverless-car-fut…

More Americans See Driverless Car Future; Few Show Interest
Expectations of widespread driverless car use are up sharply since 2018, yet personal interest is flat, safety confidence has declined, and relatively few Americans have tried one.

Janne Korhonen argues,
“When you hear the warnings beeping and flashing all the time,
it is only a natural reaction to lose focus
- and be paralysed by fear and despair.
That's why airplanes, for example, have toggles that turn the alarms off.
So that the pilots can concentrate better on working the problem.
Pilots and especially astronauts are trained to "work the problem."
Even, perhaps especially, if the situation seems truly hop…

Lingering Sweetness of Ethanol Clusters: Sensory Discovery and Objective Discrimination by Impedance-Based Electronic Tongue
Jiaxin Peng, Chaoyu Zhao, Xinyue Jiang, Yuqun Xie
https://arxiv.org/abs/2605.29530

I was watching a game via streaming on my browser, and my CPU was running at 78–80 °C (it's an old laptop).
If you inspect the page in Firefox and select the "Network" tab, you can find the video's URL. All you have to do is open that URL in mpv, and your computer will run much more smoothly and, in my case, with a CPU temperature 12 degrees lower.
#linux

A geometry aware framework enhances noninvasive mapping of whole human brain dynamics
Song Wang, Kexin Lou, Chen Wei, Zhiyuan Sheng, Jiahao Tang, Kaining Peng, Xinke Shen, Shuhao Mei, Liang Chen, Dongfeng Gu, Quanying Liu
https://arxiv.org/abs/2604.25592 https://arxiv.org/pdf/2604.25592 https://arxiv.org/html/2604.25592
arXiv:2604.25592v1 Announce Type: new
Abstract: Non-invasive electrophysiology lacks methods that accurately reconstruct whole-brain spatiotemporal dynamics while incorporating individual cortical geometry, leaving current electroencephalography and magnetoencephalography source imaging limited by simplistic or biologically implausible priors. Here, we show that embedding participant-specific Geometric Basis Functions (GBFs), eigenmodes derived from each individual's cortical surface, provides a powerful anatomic constraint that resolves the inverse problem and improves reconstruction fidelity. The method reconstructs neural sources as linear combinations of geometric basis functions, thereby aligning source estimates with the geometric organization of neural dynamics. We validate GBF across the Meta-Source Benchmark, task-evoked data, resting-state networks, intracranial stimulation, and epilepsy data. The results demonstrate that GBF yields high localization accuracy and captures fast spatiotemporal dynamics consistent with anatomical pathways. These findings suggest that both spontaneous and evoked whole-brain activity can be described by hundreds of geometric modes, providing a compact yet accurate representation of neural sources. By linking cortical geometry to electrophysiological dynamics, GBF offers a versatile source imaging tool for both scientific and clinical applications.
toXiv_bot_toot

Fortbildung #PalliativeCare am 09.10.2026 online vom Berufsverband #DBFK:
https://veranstaltunge…

Google launches Ask YouTube, a conversational AI search "experiment" that generates pages with videos and text summaries, for Premium users in the US aged 18 (Jay Peters/The Verge)
https://www.theverge.com/streaming/919441/google-ask-youtube-ai-chatb…

Google is testing AI chatbot search for YouTube
Google is trying out an AI Mode-like search experience for YouTube. With “Ask YouTube” button, YouTube will create a page with videos, Shorts, and text.

A groupoid approach to the equivariant coarse Baum--Connes conjecture
Liang Guo
https://arxiv.org/abs/2604.25595 https://arxiv.org/pdf/2604.25595

I just had to … ¯\_(ツ)_/¯
#shimmyshimmyya

inploid: Inploid: an online social Q&A platform
Inploid is a social question & answer website in Turkish. Users can follow others and see their questions and answers on the main page. Each user is associated with a reputability score which is influenced by feedback of others about questions and answers of the user. Each user can also specify interest in topics. The data is crawled in June 2017 and consist of 39,749 nodes and 57,276 directed links between them. In addition, for …

Apparently Google’s Modern Web Guidance accessibility megaskill believes it should only be called when a dev explicitly asks for accessibility in the output?
Which doesn’t quite track with the promise on the MWG home page.

Emergent conservation in atmospheric chemical mechanisms
Beatriz Lucia G. Rodriguez, Patrick Obin Sturm, Daniel Getter, Sam J. Silva
https://arxiv.org/abs/2605.27271 https://

Algorithmic Barriers to Detecting and Repairing Structural Overspecification in Adaptive Data-Structure Selection
Faruk Alpay, Levent Sarioglu
https://arxiv.org/abs/2603.24597 h…

Meta quietly rolled out USDC stablecoin payouts on Solana and Polygon for select creators in Colombia and the Philippines (Fortune)
https://fortune.com/2026/04/29/meta-stablecoins-crypto-usdc-polygon-solana/

Meta quietly rolls out stablecoin payments four years after demise of controversial Libra project
Creators can receive payouts in the stablecoin USDC on the Solana and Polygon blockchains, according to a new page on Meta’s website.

Approximating Pareto Sum via Bounded Monotone Min-Plus Convolution
Geri Gokaj, Marvin K\"unnemann, Sabine Storandt, Carina Truschel
https://arxiv.org/abs/2603.25449 https:/…

Another research paper "Understanding Decentralized Social Feed Curation on Mastodon" https://arxiv.org/abs/2504.18817 mentioning @… @…

One-shot emergency psychiatric triage across 15 frontier AI chatbots
Veith Weilnhammer, Lennart Luettgau, Christopher Summerfield, Viknesh Sounderajah, Elise Wilkinson, Virginia Corno, Matthew M Nour
https://arxiv.org/abs/2604.25415 https://arxiv.org/pdf/2604.25415 https://arxiv.org/html/2604.25415
arXiv:2604.25415v1 Announce Type: new
Abstract: AI chatbots are increasingly used for health advice, but their performance in psychiatric triage remains undercharacterized. Psychiatric triage is particularly challenging because urgency must often be inferred from thoughts, behavior, and context rather than from objective findings.
We evaluated the performance of 15 frontier AI chatbots on psychiatric triage from realistic single-message disclosures using 112 clinical vignettes, each paired with 1 of 4 original benchmark triage labels: A, routine; B, assessment within 1 week; C, assessment within 24 to 48 hours; and D, emergency care now. Vignettes covered 9 psychiatric presentation clusters and 9 focal risk dimensions, organized into 28 presentation-by-risk groups. Each group contributed 4 distinct vignettes, with 1 vignette at each triage level. Each vignette was rendered as a realistic human-authored conversational query, and the AI chatbots were tasked with assigning a triage label from that disclosure.
Emergency under-triage occurred in 23 of 410 level D trials (5.6%), and all under-triaged emergencies were reassigned to level C urgency. Across target models, average accuracy ranged from 42.0% to 71.8%. Accuracy was highest for level D vignettes (94.3%) and lowest for level B vignettes (19.7%). Mean signed ordinal error was positive ( 0.47 triage levels), indicating net over-triage. Dispersion was highest around the middle triage levels. All results were confirmed relative to clinician consensus labels from 50 medical doctors.
When presented with user messages containing sufficient clinical information, frontier AI chatbots thus recognized psychiatric emergencies as requiring urgent medical assessment with near-zero error rates, yet showed marked over-triage for low and intermediate risk presentations.
toXiv_bot_toot

Uniformity and isotypic smallness for quantum-group representations
Alexandru Chirvasitu
https://arxiv.org/abs/2603.24855 https://arxiv.org/pdf/2603.24855 https://arxiv.org/html/2603.24855
arXiv:2603.24855v1 Announce Type: new
Abstract: Compact-group representations on Banach spaces are known to be norm-continuous precisely when they have finite spectra. For a quantum group with continuous-function algebra $\mathcal{C}(\mathbb{G})$ norm continuity can be cast analogously as the bounded weak$^*$-norm continuity of the representation's attached map $\mathcal{C}(\mathbb{G})^*\to \mathrm{End}(E)$. While the uniformity/isotypic finiteness equivalence no longer holds generally, it does for compact quantum groups either coamenable or having dimension-bounded irreducible representations. This generalizes the aforementioned classical variant, providing two independent quantum-specific mechanisms of recovering it.
toXiv_bot_toot

New examples of non-unique enhancements for triangulated categories
Alice Rizzardo, Julie Symons, Michel Van den Bergh
https://arxiv.org/abs/2603.25117 https://arxiv.org/pdf/2603.25117 https://arxiv.org/html/2603.25117
arXiv:2603.25117v1 Announce Type: new
Abstract: We present a general procedure for constructing triangulated categories, linear over a field, with distinct enhancements. Some of our examples can be equipped with a (non-degenerate) t-structure, thereby showing that the existence of a t-structure does not imply uniqueness of enhancements, whether in the strong or weak sense (depending on the example).
toXiv_bot_toot

[2026-03-27 Fri (UTC), no new articles found for nlin.AO Adaptation and Self-Organizing Systems]
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[2026-03-27 Fri (UTC), no new articles found for math.SG Symplectic Geometry]
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Role of Metastable Dicationic Intermediates in the Breakup of CH$_4^{2 }$
Samiksha Dehru, Evan Munaro-Langlo\"ys, Aditya Yadav, Siddhanta Barnowal, Manojit Das, Harpreet Singh, Jibak Mukherjee, Rajarshi Sinha-Roy, Victor Despr\'e, Deepankar Misra, Arnab Khan
https://arxiv.org/abs/2605.28628

This from Stockhausen is remarkable in a couple of ways.. First it closes his book and clearly he felt it was important, but as far as I know 'social dancing' is completely absent from computer music/electroacoustic education institutions that otherwise laud Stockhausen. Secondly for the subtle dogwhistling - e.g. dance music from African continent and diaspora is first slated and then ignored.

Deep learning of committor and explainable artificial intelligence analysis for identifying reaction coordinates
Toshifumi Mori, Kei-ichi Okazaki, Kang Kim, Nobuyuki Matubayasi
https://arxiv.org/abs/2603.25237 https://arxiv.org/pdf/2603.25237 https://arxiv.org/html/2603.25237
arXiv:2603.25237v1 Announce Type: new
Abstract: In complex molecular systems, the reaction coordinate (RC) that characterizes transition pathways is essential to understand underlying molecular mechanisms. This review surveys a framework for identifying the RC by applying deep learning to the committor, which provides the most reliable measure of the progress along a transition path. The inputs to the neural network are collective variables (CVs) expressed as functions of atomic coordinates of the system, and the corresponding RC is predicted as the output by training the network on the committor as the learning target. Because deep learning models typically operate in a black-box manner, it is difficult to determine which input variables govern the predictions. The incorporation of eXplainable Artificial Intelligence (XAI) techniques enables quantitative assessment of the contributions of individual input variables to the predictions. This approach allows the identification of CVs that play dominant roles and demonstrates that the committor distribution on the surface using important CVs is separated by well-defined boundaries. The framework provides an explainable deep learning strategy for assigning a molecular mechanism from the RC and is applicable to a wide range of complex molecular systems.
toXiv_bot_toot

📰 Informiert zu sein, schützt uns vor Gefahren und finanziellen Risiken. Ich suche täglich nach wissenswerten #Nachrichten aus #Forschung, #Medizin,

KlimaCrew
Ich informiere über Zukunftsthemen, um Menschen vor Risiken zu warnen und Fortschritte sichtbar zu machen.

RE: https://mastodon.social/@arstechnica/116618619694373891
“‘To cut and paste page by page, the text from each page would have been an hour’s worth of work, of mindless cutting and pasting. ChatGPT did it in about four seconds.’
To which the obv…

I know that CQ WPX CW really starts at midnight Saturday UTC, but it's easier for me to think of it as starting at 8PM US/Eastern this coming Friday.
I definitely need to make sure I have not1mm ready to go for the contest.
Also, I have to stabilize my key. My key has been sliding on the desk a bit. I switched out the feet that Kent sent because they were too slippery, and it still wasn't right, and today I …

Games for Degrowth by Carolyn Kagan and Mark Burton, Steady Stage Manchester.
2 page spread in Red Pepper magazine.
#games #BoardGames #conscientisation

Neuronal electricality founded in murburn-thermodynamic principles: 1. Background and basic theoretical formulation
Kelath Murali Manoj, Nagamani Sukumar
https://arxiv.org/abs/2604.24772 https://arxiv.org/pdf/2604.24772 https://arxiv.org/html/2604.24772
arXiv:2604.24772v1 Announce Type: new
Abstract: Trans-membrane gradients and fluxes of cations (H , Na , K , etc.) were deemed to be the rationale of electrical activities of aerobic cells/organelles, as per classical perceptions. Murburn concept (an umbrella of theorization based in stochastic redox processes) has afforded novel models for various metabolic, bioenergetic and electrophysiological outcomes. Herein, the foundational mechanistic formalisms for the electrical activities of neurons that lead signal relay along the axonal length are provided. Electron Holding potential (EHP), a dimensionless field/state variable (related logarithmically to electron chemical potential) is used to explain neuronal activity. By combining local redox relaxation dynamics with spatial transport driven by thermodynamic gradients, we derive a unified reaction-transport-relaxation equation that captures resting potential, excitability, waveform generation, and signal propagation within a single framework. Nonlinear local redox kinetics naturally give rise to threshold behavior, all-or-none responses, and stable spike waveforms. The framework accommodates known physiological variability and provides a direct bridge between metabolic/redox state and electrophysiological behavior. This work establishes a chemically grounded, non-circular alternative to ion-centric models and offers testable predictions for neuronal dynamics across biological systems. In the second part of this work, we compare the new theory with existing systems, provide further evidence, simulations and describe elaborate agendas for falsification and validation.
toXiv_bot_toot

Optical cycling on thorium monoxide (ThO) for an improved test of fundamental symmetries
Alexander Frenett, Dorothy Gan, Nicholas Emtage, Monika Fouad, Sebastian Miki-Silva
https://arxiv.org/abs/2605.28509

OK, what the actual fuck?
I’m not signed in and, to the best of my knowledge, I don’t even have a Guardian account. And this is within the web view in Mona.
CC @…
#theGuardian

[2026-03-27 Fri (UTC), 2 new articles found for q-bio.PE Populations and Evolution]
toXiv_bot_toot

A Comparative Analysis of Clustering Algorithms for Characterizing Surface Ocean Variability in the Western Mediterranean
Victor Rodriguez-Mendez, Enrico Ser-Giacomi, Jose J. Ramasco, Cristobal Lopez, Emilio Hernandez-Garcia
https://arxiv.org/abs/2605.26666

From the Page to the Street: Guerilla Poetry, Poetry at Rallies & Protests, Community Poetry
https://ift.tt/duxT9sK
updated: Monday, May 25, 2026 - 10:06amfull name / name of organization: Addie Hopes Vincent contact…
via Input 4 RELCFP

[2026-03-27 Fri (UTC), 1 new article found for cs.CC Computational Complexity]
toXiv_bot_toot

Shortest Paths in Geodesic Unit-Disk Graphs
Bruce W. Brewer, Haitao Wang
https://arxiv.org/abs/2603.24872 https://arxiv.org/pdf/2603.24872

Cool, #PhanpySocial mentioned here: "Decentralized Social Media Platforms as a Path to a More Resilient Information Ecosystem" https://www.bertelsmann-stiftung.de/doi/10.11586/…

[2026-03-27 Fri (UTC), 1 new article found for math.OA Operator Algebras]
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[2026-03-27 Fri (UTC), 2 new articles found for math.CT Category Theory]
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[2026-04-29 Wed (UTC), 3 new articles found for q-bio.NC Neurons and Cognition]
toXiv_bot_toot

Electron spectra from strong-field enhanced ionization in heavy water
Eleanor Weckwerth, Chuan Cheng, Ian Gabalski, Andrew J. Howard, Mathew Britton, Aaron M. Ghrist, Haoran Ma, Salma A. Mohideen, Philip H. Bucksbaum
https://arxiv.org/abs/2605.27612

Deep learning of committor and explainable artificial intelligence analysis for identifying reaction coordinates
Toshifumi Mori, Kei-ichi Okazaki, Kang Kim, Nobuyuki Matubayasi
https://arxiv.org/abs/2603.25237

[2026-05-27 Wed (UTC), 2 new articles found for physics.ao-ph Atmospheric and Oceanic Physics]
toXiv_bot_toot

Vision as looking and seeing through a bottleneck
Li Zhaoping
https://arxiv.org/abs/2604.23030 https://arxiv.org/pdf/2604.23030 https://arxiv.org/html/2604.23030
arXiv:2604.23030v1 Announce Type: new
Abstract: Progress in vision research has been slower downstream than upstream of primary visual cortex (V1). Traditional frameworks have largely overlooked a central constraint: only a tiny fraction of retinal input is recognized. Thus, to a first approximation, vision is better formulated as looking and seeing through a bottleneck. Looking, mainly by the peripheral visual field, selects visual information to enter this bottleneck, largely via gaze shifts that center selected contents at fovea. Seeing, mainly by the central visual field, recognizes this content. Converging evidence suggests that V1 initiates the bottleneck and contributes to looking by generating a bottom-up saliency map that guides saccades exogenously, and that top-down feedback along the visual pathway, targeting mainly the representation of the central visual field, refines seeing. Progress will accelerate through falsifiable theories that explicitly link behavior with neural substrates, and by experimental designs that avoid forced fixation and precisely track gaze.
toXiv_bot_toot

Strong-field Photoionization: Analysis of Overlapping Above-Threshold Ionization and Laser-Assisted Photoemission Structures
Candelaria Migliaro, Juan Martin Randazzo, Renata Della Picca
https://arxiv.org/abs/2605.27603

You don’t need to sign up to NBC to listen to articles, even if you use Firefox on Android.
I updated this post with the steps shown in the video (since Firefox has to rely on Android, versus its swell UI on Windows):
https://adrianroselli.com/2026/03/your-b…

Persistence-based topological optimization: a survey
Mathieu Carriere (DATASHAPE), Yuichi Ike (LIGM), Th\'eo Lacombe (LIGM), Naoki Nishikawa (UTokyo | IST)
https://arxiv.org/abs/2603.24613

[2026-03-26 Thu (UTC), no new articles found for math.SG Symplectic Geometry]
toXiv_bot_toot

Radiative Response of Atomic Systems Illuminated with Approximate Spherical Vector Waves
F. Camas-Aquino, R. J\'auregui
https://arxiv.org/abs/2605.27558 https://

[2026-03-26 Thu (UTC), 2 new articles found for nlin.AO Adaptation and Self-Organizing Systems]
toXiv_bot_toot

Quantum Graph Theory by Example
Gian Luca Spitzer, Ion Nechita
https://arxiv.org/abs/2603.23651 https://arxiv.org/pdf/2603.23651 https://arxiv.org/html/2603.23651
arXiv:2603.23651v1 Announce Type: new
Abstract: Quantum graphs have been introduced by Duan, Severini, and Winter to describe the zero-error behaviour of quantum channels. Since then, quantum graph theory has become a field of study in its own right. A substantial source of difficulty in working with quantum graphs compared to classical graphs stems from the fact that they are no longer discrete objects. This makes it generally difficult to construct insightful, non-trivial examples. We present a collection of non-trivial quantum graphs that can be thought of in discrete terms, and that can be expressed in the diagrammatic formalism introduced by Musto, Reutter, and Verdon. The examples arise as the quantum graphs acted on by increasingly smaller classical matrix groups, and are parametrised by triples of matrices $(A, B, C)$. The parametrisation reveals a clean decomposition of quantum graph structure into classical and genuinely quantum components: $A$ and $C$ are described by a classical weighted graph called the strange graph, while $B$ provides a purely quantum contribution with no classical analogue. Based on this model, we give exact formulas or establish bounds for quantum graph parameters, such as the number of connected components, the chromatic number, the independence number, and the clique number. Our results provide the first large, parametric families of quantum graphs for which standard graph parameters can be computed analytically.
toXiv_bot_toot

[2026-03-26 Thu (UTC), 2 new articles found for math.CT Category Theory]
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[2026-05-28 Thu (UTC), 5 new articles found for physics.atom-ph Atomic Physics]
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[2026-03-26 Thu (UTC), no new articles found for cs.CC Computational Complexity]
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[2026-03-27 Fri (UTC), 3 new articles found for cs.CG Computational Geometry]
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Restoring Velocity Immunity via Dynamic Mirror Compensation in a Large-Area Dual-Atom-Interferometer Gyroscope
Jie Gu, Yin-fei Mao, Zhan-Wei Yao, An-qing Zhang, Si-Bin Lu, Shao-kang Li, Min Jiang, Xiao-Li Chen, Min Ke, Xi Chen, Run-Bing Li, Jin Wang, Ming-Sheng Zhan
https://arxiv.org/abs/2605.29929…

Isotope shifts and hyperfine splitting of the ${}^{1}S_{0}\rightarrow{}^{3}P_{1}$ transition in zinc
Felix Waldherr, Lukas M\"oller, Simon Stellmer
https://arxiv.org/abs/2605.29574

Universal response of Rydberg manifolds to standing light waves from the microwave to the X-ray regime
Homar Rivera-Rodr\'iguez, Matthew T. Eiles, Jan M. Rost
https://arxiv.org/abs/2605.29024

[2026-05-29 Fri (UTC), 5 new articles found for physics.atom-ph Atomic Physics]
toXiv_bot_toot

Bounded modular functionals and operators on Hilbert C*-modules are regular
Michael Frank, Cristian Ivanescu
https://arxiv.org/abs/2603.24042 https://arxiv.org/pdf/2603.24042 https://arxiv.org/html/2603.24042
arXiv:2603.24042v1 Announce Type: new
Abstract: We prove that for any C*-algebra $A$ and Hilbert $A$-modules $M\subseteq N$ with $M^\perp=\{0\}$, every bounded $A$-linear map $N\to A$ (or $N\to N)$ vanishing on $M$ is the zero map. This verifies the conjectures of the first author and settles the regularity problem for bounded modular functionals and operators on Hilbert C*-modules. As a consequence, kernels of bounded C*-linear operators on Hilbert C*-modules are shown to be biorthogonally complemented, which gives a correct proof of Lemma 2.4 in ``On Hahn-Banach type theorems for Hilbert C*-modules'', Internat. J. Math. 13(2002), 1--19, in full generality.
toXiv_bot_toot

Enhanced left triangulated categories
Xiaofa Chen
https://arxiv.org/abs/2603.24300 https://arxiv.org/pdf/2603.24300 https://arxiv.org/html/2603.24300
arXiv:2603.24300v1 Announce Type: new
Abstract: In this short note, we study dg categories with homotopy kernels, whose homotopy categories are known to admit a natural left triangulated structure. Prototypical examples of such dg categories arise as dg quotients of exact dg categories. We demonstrate that the stablization of the homotopy category of such a dg category admits a canonical dg enhancement via its bounded derived dg category.
toXiv_bot_toot

On bound state spectra of the one-electron diatomic ions
Alexei M. Frolov
https://arxiv.org/abs/2604.23411 https://arxiv.org/pdf/2604.23411

Lagged sea-surface-temperature precursors of the leading PM2.5 mode in China
Yuan Chen, Dan Zhao, Xu Li
https://arxiv.org/abs/2605.25436 https://arxiv.org/pdf/2605.25436 https://arxiv.org/html/2605.25436
arXiv:2605.25436v1 Announce Type: new
Abstract: Fine particulate matter(PM2.5) pollution in China is strongly modulated bymeteorological variability, yet its seasonal predictability from oceanic signals remains unclear. Here we identify the leading PM2.5 variability mode over China and show that it is preceded by coherent sea-surface-temperature anomaly clusters by more than one season. These oceanic precursors influence summer PM2.5 mainly by altering precipitation and lowlevel ventilation, and winter PM2.5 by modulating boundary-layer height and near-surface stagnation. Using the four largest precursor regions, a simple regression model achieves significant independent prediction skill for both summer and winter PM2.5 variability. Our results reveal a physical pathway linking sea-surface-temperature memory to regional aerosol pollution and provide a basis for seasonal air-quality risk assessment.
toXiv_bot_toot

Enhanced Atom Capture via Multi-Frequency Magneto-Optical Trapping
Benjamin Hopton, Alexander Abbey, David Johnson, Daniele Baldolini, Matt Overton, Nathan Cooper, Joseph Aziz, Richard Howl, Lucia Hackermuller
https://arxiv.org/abs/2604.23221

[2026-03-26 Thu (UTC), no new articles found for cs.CG Computational Geometry]
toXiv_bot_toot

[2026-04-28 Tue (UTC), 5 new articles found for physics.atom-ph Atomic Physics]
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[2026-03-26 Thu (UTC), 2 new articles found for math.OA Operator Algebras]
toXiv_bot_toot

A pretorsion theory for right groups
Alberto Facchini, Carmelo Antonio Finocchiaro
https://arxiv.org/abs/2603.23982 https://arxiv.org/pdf/2603.23982 https://arxiv.org/html/2603.23982
arXiv:2603.23982v1 Announce Type: new
Abstract: Let $S$ be a right group. Then there exist two congruences $\sim$ and $\equiv$ on $S$ such that $S$ is the product of its quotient semigroups $S/{\sim}$ and $S/{\equiv}$, where $S/{\sim}$ is a group and $S/{\equiv}$ is a right zero semigroup. If $E$ is the set of all idempotents of $S$ and we fix an element $e_0\in E$, then the pointed right group $(S,e_0)$ is the coproduct of its pointed subsemigroups $(Se_0,e_0)$ and $(E,e_0)$ in the category of pointed right groups. In general, there is a pretorsion theory in the category of right groups in which the torsion objects are right zero semigroups and the torsion-free objects are groups.
toXiv_bot_toot

Ultrafast electron vortex produced by a grating made of light
Zichen Li, Hao Liang, Yuan Gu, Jiaye Zhang, Aofan Lin, Juan Du, Sina Jacob, Maksim Kunitski, Till Jahnke, Sebastian Eckart, Reinhard D\"orner, Kang Lin
https://arxiv.org/abs/2604.25546

JAX-SCM v1.0: a modern atmospheric single-column model for boundary layer research
Maximilian Pierzyna
https://arxiv.org/abs/2605.24544 https://arxiv.org/pdf/2605.24544 https://arxiv.org/html/2605.24544
arXiv:2605.24544v1 Announce Type: new
Abstract: We present JAX-SCM v1.0, an open-source atmospheric single-column model for boundary layer research, implemented in Python using the JAX computing library. The model solves for horizontal wind, potential temperature, and specific humidity, combined with prognostic turbulent kinetic energy and turbulent statistics parameterized by the Mellor-Yamada-Nakanishi-Niino level-2.5 (MYNN-2.5) turbulence closure. We verify the implementation against three well-established benchmark cases covering neutral (turbulent Ekman layer), stable (GABLS1), and convective (Wangara Day 33) conditions. Close agreement with reference solutions is demonstrated across all regimes. By building on JAX, the model benefits from just-in-time compilation and native GPU support. While JAX-SCM is not yet fully differentiable, basing it on JAX also lays the foundation for future integration with machine learning components. The model is designed for simplicity and modularity, lowering the barrier to entry for users and developers alike.
toXiv_bot_toot

The critical role of negative-energy states in the Land\'{e} $g$-factor of lithium-like ions
Chang-Xian Song, Yong-Bo Tang
https://arxiv.org/abs/2604.25515 https://

[2026-04-29 Wed (UTC), 2 new articles found for physics.atom-ph Atomic Physics]
toXiv_bot_toot

Seeing Inside the Storm: Improving Nowcasting by Integrating Meteorological Drivers
Minghui Qiu, Jun Chen, Lin Chen, Weifeng Chen, Shuxin Zhong, Zhidan Liu, Yu Zhang, Kaishun Wu
https://arxiv.org/abs/2605.24067 https://arxiv.org/pdf/2605.24067 https://arxiv.org/html/2605.24067
arXiv:2605.24067v1 Announce Type: new
Abstract: Most nowcasting systems, built on radar reflectivity, focus on current precipitation, ignoring the atmospheric precursors -- such as low-level convergence, turbulent eddies, and latent heating -- that offer a fleeting window to foresee storm birth. We introduce MeteoLogist, a physics-inspired radar intelligence framework that models the full life cycle of convection -- from its precursors to organized storm evolution. However, exploiting these precursors is non-trivial: they originate from multiple meteorological drivers -- thermodynamic, kinematic, and microphysical -- that evolve asynchronously (C1) and remain spatially fragmented (C2). To this end, MeteoLogist designs three tightly integrated components. The Physics-Tailored Encoders process radar echoes according to their intrinsic physical scales and semantics, forming thermodynamic, kinematic, and microphysical streams that capture distinct dynamical regimes. The Temporal-Phase Aligner addresses C1 by leveraging causal temporal attention to capture when and how different drivers interact and activate. The Cross-Field Spatial Aggregator addresses C2 through cross-regional fusion, aligning weak and scattered precursors across neighboring cells to expose upstream triggers and enforce spatial coherence. Evaluated on 3D-NEXRAD (2020--2022, US-wide), MeteoLogist boosts high-impact detection (CSI40) by 9.7% over strong baselines, and achieves a remarkable 37.67% gain during the storm-developing stage -- demonstrating true foresight in sensing storms before they appear. The code can be found in the supplementary material.
toXiv_bot_toot

Volador 1.0: A Data-Driven Air-Sea Full-Coupling Regional Forecast Model with Submesoscale-Permitting Based on MOE-Swin-Transformer Framework
Yuhang Zhu, Jianxin Wang, Yu-kun Qian, Yineng Li, Yahui Liu, Yankun Gong, Shilin Tang, Shiqiu Peng, Tao Song
https://arxiv.org/abs/2605.24032 https://arxiv.org/pdf/2605.24032 https://arxiv.org/html/2605.24032
arXiv:2605.24032v1 Announce Type: new
Abstract: A data-driven air-sea full-coupling regional forecast model with submesoscale-permitting, named "Volador 1.0", is developed for the South China Sea (SCS). The model features a Swin-Transformer framework integrated with a Mixture-of-Experts (MoE) system, a latent space interaction architecture based on Cross-Grid Bidirectional Cross-Attention, and a fast-slow dual-branch architecture. Both the three-month hindcast test and the 15-day operational real-time forecasting demonstrate that Volador 1.0 has a very encouraging and promising performance in 0-72h forecasting of temperature and salinity in the 0-500m upper ocean as well as the sea surface height with root-mean-square-error (RMSE) or mean absolute error (MAE) smaller than or at least comparable to those from the reanalysis datasets REDOS V2.0 and GLORYS12 and the state-of-the-art regional numerical model Regional Ocean Modeling System (ROMS). In particular, Volador 1.0 demonstrates its capability of capturing/forecasting submesoscale processes including internal waves, with an energy spectrum well representing sub- to mesoscale energy cascade as expected by the classical turbulence theory. Further analysis based on ablation experiments shows that the air-sea full-coupling framework, which takes into account the dynamic exchanges of momentum and heat fluxes between the atmosphere and the ocean, indeed helps improve the model's performance compared to the non-full-coupling one. Volador 1.0, though still subject to refinement in the coming future with a large space for improvement, blazes a path for an accurate, fine and fast marine environment forecasting, and thus could help promote our capability of disaster prevention and mitigation in the SCS as well as in other coastal regions where these innovative techniques can be applied.
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Improving Ensemble CAPE Forecasts with a Diffusion Model Incorporating Aerosol Information
Zachary James, Joseph Guinness, Arthur DeGaetano
https://arxiv.org/abs/2605.24009 https://arxiv.org/pdf/2605.24009 https://arxiv.org/html/2605.24009
arXiv:2605.24009v1 Announce Type: new
Abstract: Convective available potential energy (CAPE) is an important variable for forecasting severe weather and understanding deep convection and precipitation. The latest versions of the Global Forecast System (GFS) and related Global Ensemble Forecast System (GEFS) have exhibited a bias towards underestimating CAPE values during the summertime. We train an artificial intelligence (AI) diffusion model to improve the skill and uncertainty quantification of afternoon 6-hour lead time ensemble forecasts over the United States. Our model takes a GFS CAPE forecast as input and outputs an ensemble that significantly outperforms both GFS and GEFS 6-hour forecasts on root mean square error, continuous ranked probability score, and Brier score. We propose a two-stage training pipeline to leverage both a larger historical GFS forecast dataset and a smaller historical GEFS dataset, despite the two using initialization and parameterization schemes that vary over time. We also show that classifier-free guidance can be used to control the skill and spread of the forecasts. We then demonstrate the versatility of our framework by adding aerosol optical depths (AODs) of black carbon, organic carbon, dust, sea salt, and sulfates as additional input features. Aerosols can invigorate or suppress convection depending on atmospheric conditions. Our AI models effectively incorporate aerosols to produce improved CAPE forecasts. We interpret the model components by using permutation feature importance to rank the influence of the different AODs and find that black carbon, organic carbon, and sulfate aerosols have a greater impact on the model's CAPE predictions than sea salt and dust aerosols.
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Dynamics of electromagnetically induced water molecule fragmentation
Anton V. Bibikov, Sergei N. Yudin, Maria M. Popova, Alexei N. Grum-Grzhimailo, Elena V. Gryzlova
https://arxiv.org/abs/2603.24757

[2026-03-27 Fri (UTC), 8 new articles found for physics.atom-ph Atomic Physics]
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Self-energy corrections to the ionization energies in sodium-like ions: comparison of the \textit{ab initio} QED and model-QED-operator approaches
P. Yang, A. V. Malyshev, E. A. Prokhorchuk, I. I. Tupitsyn, V. M. Shabaev, D. P. Usov
https://arxiv.org/abs/2603.25212

A High-Contrast Bragg Atom Interferometer for Testing Continuous Spontaneous Localization
Huaiyu Zhu, Ju Liu, Tao Zhang, Qin Luo, Zhongkun Hu, Minkang Zhou
https://arxiv.org/abs/2605.26860

Parity non-conservation in isotope chain of tin
V. A. Dzuba, V. V. Flambaum, D. DeMille, Jianwei Wang, Geoffrey Zheng
https://arxiv.org/abs/2605.26378 https://

[2026-05-27 Wed (UTC), 3 new articles found for physics.atom-ph Atomic Physics]
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Near-deterministic loading of optical tweezer arrays via repulsive barricade potentials
Archie C. Baldock, Alex J. Matthies, Luke Caldwell, Hannah J. Williams
https://arxiv.org/abs/2604.22406

[2026-04-27 Mon (UTC), 1 new article found for physics.atom-ph Atomic Physics]
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Replaced article(s) found for physics.atom-ph. https://arxiv.org/list/physics.atom-ph/new
[1/1]:
- Wideband Search for Axionlike Dark Matter Using Octupolar Nuclei in a Crystal
Mingyu Fan, Bassam Nima, Aleksandar Radak, Gonzalo Alonso-\'Alvarez, Amar Vutha

Crosslisted article(s) found for physics.atom-ph. https://arxiv.org/list/physics.atom-ph/new
[1/1]:
- A High-Flux Source of Cold Strontium with a Loading Rate of $4 \times 10^{10}$ atoms/s for Open R...
Thomas Walker, et al.

A high-flux atomic strontium oven with light-driven flux modulation
Kenneth M. Hughes, Jesse S. Schelfhout, Charu Mishra, Timothy Leese, Elliot Bentine, Christopher J. Foot
https://arxiv.org/abs/2603.25567

Radiative Association of Ag and H: Formation of AgH from Ab Initio Calculations
Lin Jiang, Yu Wang, Yukun Yang, Xuanbing Qiu, Yali Tian, Guqing Guo, Ling Liu, Chuanliang Li, Yong Wu
https://arxiv.org/abs/2603.25297

Binding Energy of Muonic Beryllium: Perturbative versus All--Order Calculations
Shikha Rathi, Ulrich D. Jentschura, Paul Indelicato, Ben Ohayon
https://arxiv.org/abs/2603.25278 …

Portable laser-cooled ytterbium beam clock based on an ultra-narrow optical transition
R. F. Offer, E. Klantsataya, A. P. Hilton, A. Strathearn, N. Bourbeau H\'ebert, C. J. Billington, S. Watzdorf, S. K. Scholten, B. White, M. Nelligan, T. M. Stace, A. N. Luiten
https://arxiv.org/abs/2603.25261…

Sensing T-violating nuclear moments of paramagnetic ions in crystals
Aleksandar Radak, Mingyu Fan, Bassam Nima, Yuiki Takahashi, Amar Vutha
https://arxiv.org/abs/2603.24907 http…

Absence of Far-Detuned Attractive Optical Traps for Alkali Rydberg Atoms
Gabriel E. Patenotte, Youngshin Kim, Samuel Gebretsadkan, Kang-Kuen Ni
https://arxiv.org/abs/2603.24789 …

[2026-03-26 Thu (UTC), 2 new articles found for physics.atom-ph Atomic Physics]
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Self-calibrated multiparameter measurement of three-dimensional microwave fields
Yupeng Wang, Xinghan Wang, Aishik Panja, Md. Ehsanuzzaman, Chuan-Hsun Li, Qi-Yu Liang
https://arxiv.org/abs/2605.26098

From Vintage Mythology to Topological Physics: Unveiling a Universal Structural Attractor in Alcoholic Beverage Aging
Xinyue Jiang, Heng Yang, Zhiyin Jiu, Youxi Luo, Lin Chen, Yuqun Xie
https://arxiv.org/abs/2605.25472

FPGA-based disturbance-observer servo for broadband noise suppression in laser frequency stabilization
Meung Ho Seo, Jae Hoon Lee, Young-Ho Park, Hyun-Gue Hong, Seji Kang, Myoung-Sun Heo, Sang-Bum Lee, Taeg Yong Kwon, Sangwon Seo, Sang Eon Park
https://arxiv.org/abs/2605.25471

The Pseudospectral Method for the Dirac Equation with Confining Potential
Dengshan Liu, Huihui Xie, Pengxiang Du, Jian Li, Tomoya Naito
https://arxiv.org/abs/2605.25390 https://…

Minimally Destructive Fast Imaging of Single Atoms in an Optical Tweezer Array with Coherent Excitation
Rei Yokoyama, Takumi Kashimoto, Kosuke Shibata, Yuki Kawamura, Toshi Kusano, Chih-Han Yeh, Reiji Asano, Yuma Nakamura, Tetsushi Takano, Yosuke Takasu, Yoshiro Takahashi
https://arxiv.org/abs/2605.24175

[2026-05-26 Tue (UTC), 5 new articles found for physics.atom-ph Atomic Physics]
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[2026-03-25 Wed (UTC), 3 new articles found for physics.atom-ph Atomic Physics]
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In-orbit Test of the Weak Equivalence Principle with Atom Interferometry
Dan-Fang Zhang, Jing-Ting Li, Wen-Zhang Wang, Wei-Hao Xu, Jia-Yi Wei, Xiao Li, Yi-Bo Wang, Dong-Feng Gao, Jia-Qi Zhong, Biao Tang, Lin Zhou, Run-Bing Li, Huan-Yao Sun, Qun-Feng Chen, Lei Qin, Mei-zhen An, Zong-Feng Li, Shu-Quan Wang, Xiao-Xiao Guo, Yao Tian, Xi-He Yu, Hong-En Zhong, Xi Chen, Jin Wang, Ming-Sheng Zhan