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Triangular instability of a strained Batchelor vortex
A. S. P. Ayapilla (Graduate School of Information Sciences, Tohoku University, Sendai, Japan), Y. Hattori (Institute of Fluid Science, Tohoku University, Sendai, Japan), S. Le Diz\`es (Aix Marseille Universit\'e, CNRS, Centrale M\'editerran\'ee, IRPHE, Marseille, France)
https://

Triangular instability of a strained Batchelor vortex
We investigate the triangular instability of a Batchelor vortex subjected to a stationary triangular strain field generated by three satellite vortices, in the presence of weak axial flow. The analysis combines theoretical predictions with numerical simulations. Theoretically, the instability arises from resonant coupling between two quasi-neutral Kelvin modes with azimuthal wavenumbers $m$ and $m+3$ with the background strain. Numerically, we solve the linearized Navier-Stokes equations around…

Observation of Kardar-Parisi-Zhang universal scaling in two dimensions
Simon Widmann, Siddhartha Dam, Johannes D\"ureth, Christian G. Mayer, Romain Daviet, Carl Philipp Zelle, David Laibacher, Monika Emmerling, Martin Kamp, Sebastian Diehl, Simon Betzold, Sebastian Klembt, Sven H\"ofling
https://arxiv.org/abs/2506.1552…

Observation of Kardar-Parisi-Zhang universal scaling in two dimensions
Equilibrium and nonequilibrium states of matter can exhibit fundamentally different behavior. A key example is the Kardar-Parisi-Zhang universality class in two spatial dimensions (2D KPZ), where microscopic deviations from equilibrium give rise to macroscopic scaling laws without equilibrium counterparts. While extensively studied theoretically, direct experimental evidence of 2D KPZ scaling has remained limited to interface growth so far. Here, we report the observation of universal scaling c…

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$\mathrm{^{117m}Sn}$ and $\mathrm{^{119m}Te}$ Production via Proton Bombardment on Natural Antimony and Implications for Modeling Charged Particle Reactions
Catherine E. Apgar, Andrew S. Voyles, Jon C. Batchelder, Cathy S. Cutler, Morgan B. Fox, Yun-Hsuan Lee, Dmitri G. Medvedev, Jonathan T. Morrell, Ellen M. O'Brien, Michael Skulski, C. Etienne Vermeulen, Lee A. Bernstein

$\mathrm{^{117m}Sn}$ and $\mathrm{^{119m}Te}$ Production via Proton Bombardment on Natural Antimony and Implications for Modeling Charged Particle Reactions
$\mathrm{^{117m}Sn}$ and $\mathrm{^{119}Sb}$, the latter of which is produced via a $\mathrm{^{119m}Te}$ generator, are promising radionuclides for the targeted treatment of both osteoarthritis and small mass tumors via Auger therapy. Experiments were conducted at Lawrence Berkeley National Laboratory, Los Alamos National Laboratory, and Brookhaven National Laboratory to measure the $\mathrm{^{nat}Sb}$(p,x)$\mathrm{^{117m}Sn}$ and $\mathrm{^{nat}Sb}$(p,x)$\mathrm{^{119m}Te}$ cross sections for …

Interpretable Bayesian Tensor Network Kernel Machines with Automatic Rank and Feature Selection
Afra Kilic, Kim Batselier
https://arxiv.org/abs/2507.11136 …

Interpretable Bayesian Tensor Network Kernel Machines with Automatic Rank and Feature Selection
Tensor Network (TN) Kernel Machines speed up model learning by representing parameters as low-rank TNs, reducing computation and memory use. However, most TN-based Kernel methods are deterministic and ignore parameter uncertainty. Further, they require manual tuning of model complexity hyperparameters like tensor rank and feature dimensions, often through trial-and-error or computationally costly methods like cross-validation. We propose Bayesian Tensor Network Kernel Machines, a fully probabil…

Euclid preparation. Simulating thousands of Euclid spectroscopic skies
Collaboration, Monaco, Parimbelli, Elkhashab, Salvalaggio, Castro, Lepinzan, Sarpa, Sefusatti, Stanco, Tornatore, Addison, Bruton, Carbone, Castander, Carretero, de la Torre, Fosalba, Lavaux, Lee, Markovic, McCarthy, Passalacqua, Percival, Risso, Scarlata, Tallada-Cresp\'i, Viel, Wang, Altieri, Andreon, Auricchio, Baccigalupi, Baldi, Bardelli, Battaglia, Bernardeau, Biviano, Branchini, Brescia, Brinchmann, Camer…

Euclid preparation. Simulating thousands of Euclid spectroscopic skies
We present two extensive sets of 3500+1000 simulations of dark matter haloes on the past light cone, and two corresponding sets of simulated (`mock') galaxy catalogues that represent the Euclid spectroscopic sample. The simulations were produced with the latest version of the PINOCCHIO code, and provide the largest, public set of simulated skies. Mock galaxy catalogues were obtained by populating haloes with galaxies using an halo occupation distribution (HOD) model extracted from the Flagship …

Artificial Gauge Fields and Dimensions in a Polariton Hofstadter Ladder
Simon Widmann, Jonas Bellmann, Johannes D\"ureth, Siddhartha Dam, Christian G. Mayer, Philipp Gagel, Simon Betzold, Monika Emmerling, Subhaskar Mandal, Rimi Banerjee, Timothy C. H. Liew, Ronny Thomale, Sven H\"ofling, Sebastian Klembt
https://arxiv…

Artificial Gauge Fields and Dimensions in a Polariton Hofstadter Ladder
Artificial gauge fields allow uncharged particles to mimic the behavior of charged particles subjected to magnetic fields, providing a powerful platform for exploring topological physics. Neutral particles, like photons, are typically unaffected by real magnetic fields. However, it is possible to introduce artificial gauge fields that control the effective dynamics of these neutral particles. Topological exciton-polariton lasers have attracted considerable interest, in part due to the wide rang…

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Turbulent stretching of dumbbells with hydrodynamic interactions: an analytical study
Jason R. Picardo, Dario Vincenzi
https://arxiv.org/abs/2506.14282 htt…

Turbulent stretching of dumbbells with hydrodynamic interactions: an analytical study
We study the stretching of an elastic dumbbell in a turbulent flow, with the aim of understanding and quantifying the effect of hydrodynamic interactions (HI) between the beads of the dumbbell. Adopting the Batchelor-Kraichnan model for the flow, we derive a Fokker-Planck equation and solve it analytically to obtain the probability distribution of the dumbbell's extension. Using different formulations of the HI tensor, we find that HI preferentially enhances the stretching of stiff dumbbells, i…

Chemo-dynamics of the stellar component of the Sculptor dwarf galaxy II: dynamical properties and dark matter halo density
Jos\'e Mar\'ia Arroyo Polonio, Raffaele Pascale, Giuseppina Battaglia, Guillaume F. Thomas, Carlo Nipoti, Eugene Vasiliev, Eline Tolstoy
https://arxiv.org/abs/2506.11845

Chemo-dynamics of the stellar component of the Sculptor dwarf galaxy II: dynamical properties and dark matter halo density
Dwarf galaxies satellite of the Milky Way are excellent laboratories for testing dark matter (DM) models and baryonic feedback implementation in simulations. The Sculptor 'classical' dwarf spheroidal galaxy, a system with two distinct stellar populations and high-quality data, offers a remarkable opportunity to study DM distributions in these galaxies. In this work, we infer the DM halo density distribution of Sculptor, applying a method based on spherically symmetric distribution functions dep…