Tootfinder

Sandwich Construction of Symmetry TFTs for the Centre Symmetries of Chern-Simons, Yang-Mills, and Einstein Gravity
Leron Borsten, Dimitri Kanakaris, Hyungrok Kim
https://arxiv.org/abs/2509.08819

Sandwich Construction of Symmetry TFTs for the Centre Symmetries of Chern-Simons, Yang-Mills, and Einstein Gravity
We construct symmetry topological field theories (SymTFTs) using the sandwich construction of Pulmann-Ševera-Valach that manifest the centre symmetries of Chern-Simons theory and Yang-Mills theory as well as general relativity in the MacDowell-Mansouri formulation. The 'filling' of the sandwich is an AKSZ sigma model whose target space is a Weil algebra, augmented with discrete degrees of freedom given by a choice of topological boundary condition.

PAC Learnability in the Presence of Performativity
Ivan Kirev, Lyuben Baltadzhiev, Nikola Konstantinov
https://arxiv.org/abs/2510.08335 https://arxiv.org/p…

PAC Learnability in the Presence of Performativity
Following the wide-spread adoption of machine learning models in real-world applications, the phenomenon of performativity, i.e. model-dependent shifts in the test distribution, becomes increasingly prevalent. Unfortunately, since models are usually trained solely based on samples from the original (unshifted) distribution, this performative shift may lead to decreased test-time performance. In this paper, we study the question of whether and when performative binary classification problems are…

Flux-driven charge and spin transport in a dimerized Hubbard ring with Fibonacci modulation
Souvik Roy, Soumya Ranjan Padhi, Tapan Mishra
https://arxiv.org/abs/2509.09542 https:…

Flux-driven charge and spin transport in a dimerized Hubbard ring with Fibonacci modulation
We study quantum transport in a one-dimensional Hubbard ring with dimerized nearest-neighbor hoppings and a Fibonacci-modulated onsite potential. For non-interacting case our analysis reveals that at half-filling, the charge current along with the Drude weight decreases with increasing onsite potential when inter-cell hopping dominates over the intra-cell hopping, while for dominating intra-cell hopping it shows non-monotonic behavior with sharp peak at certain critical modulation strength, ind…

Investigation of the Effect of Thermal-Induced Atomic Motion on the Conductance of Copper Thin Films
Sihe Chen, Kevin Batzinger, Manuel Smeu
https://arxiv.org/abs/2510.05349 htt…

Investigation of the Effect of Thermal-Induced Atomic Motion on the Conductance of Copper Thin Films
Decrease in the size of integrated circuits (IC) and metal interconnects raise resistivity due the amplification of electron scattering effects, which decreases the efficiency of chiplets. While previous studies have investigated the electron scattering due to a roughened surface, the effect of thermal induced atomic motion on the roughened surface remains unclear. To address this gap, we investigated electron transport in pristine and roughened Cu thin films by performing \textit{ab initio} mo…

Modeling Magnetoelastic Wave Interactions in Magnetic Films and Heterostructures: A finite-difference approach
Peter Flauger, Matthias K\"u{\ss}, Michael Karl Steinbauer, Florian Bruckner, Bernhard Emhofer, Emeline Nysten, Matthias Wei{\ss}, Dieter Suess, Hubert J. Krenner, Manfred Albrecht, Claas Abert
https://arxiv.org/abs/2509.0600…

Modeling Magnetoelastic Wave Interactions in Magnetic Films and Heterostructures: A finite-difference approach
The (inverse) magnetostrictive effect in ferromagnets couples the magnetic properties to the mechanical stress, allowing for an interaction between the magnetic and mechanical degrees of freedom. In this work, we present a time-integration scheme for the self-consistent simulation of coupled magnetoelastic dynamics within the framework of finite-difference micromagnetism. The proposed implementation extends the Landau-Lifshitz-Gilbert equation by a strain-induced effective field and concurrentl…

The-Bodega: A Matlab Toolbox for Biologically Dynamic Microbubble Simulations on Realistic Hemodynamic Microvascular Graphs
Stephen Alexander Lee, Alexis Leconte, Alice Wu, Jonathan Poree, Maxence Laplante-Berthier, Simon Desrocher, Pierre-Olivier Bouchard, Joshua Kinugasa, Samuel Mihelic, Andreas Linninger, Jean Provost
https://arxiv.org/…

The-Bodega: A Matlab Toolbox for Biologically Dynamic Microbubble Simulations on Realistic Hemodynamic Microvascular Graphs
The-Bodega is a Matlab-based toolbox for simulating ground-truth datasets for Ultrasound Localization Microscopy (ULM)-a super resolution imaging technique that resolves microvessels by systematically tracking microbubbles flowing through the microvasculature. The-Bodega enables open-source simulation of stochastic microbubble dynamics through anatomically complex vascular graphs and features a quasi-automated pipeline for generating ground-truth ultrasound data from simple vascular inputs. It …

Really silly dream
I had a really silly #dream recently. I dreamt that my CFL broke. Or more specifically, it kept trying to turn out, successive parts of it were lighting up, then it all went off and tried again. And it looked like it had a bunch of cuts across it, and around these cuts little thunder sparks started appearing, like some kind of STALKER-like anomaly.
I finally flipped the switch, but the anomaly remained, and I wanted to get rid of it in case the sparks could jump onto my hardware and damage something. So I threw a metal bowl towards it, supposing the thunder would jump onto it. While it was flying near the anomaly, it slowed down and started turning back like a boomerang. On top of that, pieces of cat food (don't ask me why I threw a full bowl) were getting out of it and staying in the air levitating. When the bowl reached the floor and started turning again, Mr Ek came close to it and started levitating himself; he was sitting a few centimeters above the floor.
In the middle of all this, I've figured out I should record it. I took a bunch of photos with my phone, before I managed to switch to recording video.
Once I've recorded the fascinating flying bowls and levitating cat food, I needed to go back to discharging the thing. I threw a second metal bowl, and that one started levitating as well. I've figured out that's stupid, and I've found some big ass hammer with a metal end and a wooden handle. I held the end near the lamp to charge it, then tried to find something to discharge it to. I've tried some small stuff like the door handle, but obviously that wasn't sufficient. Finally, I've figured out to use the electricity box, since it is grounded. I held the hammer to it, watching sparks light the semi-darkness; I've recorded that as well.
And that's how much of it I remember.

Features of the Electronic and Charge States of Monovalent-Doped Manganite Films Probed by Magnetic Circular Dichroism
Yulia E. Samoshkina, Dmitriy A. Petrov, Dmitry S. Neznakhin, Igor E. Korsakov, Andrei V. Telegin
https://arxiv.org/abs/2509.22231

Features of the Electronic and Charge States of Monovalent-Doped Manganite Films Probed by Magnetic Circular Dichroism
Magnetic circular dichroism (MCD) spectroscopy in the range of 1.2 - 3.7 eV was studied for La1-xKxMnO3 (x = 0.05 - 0.18) epitaxial films over a wide temperature range. The thin films were grown using a two-step procedure: deposition of LaxMnO3-δ and potassium K+ incorporation into the films via isopiestic annealing. The temperature behavior of the MCD effect in different spectral regions was analyzed alongside the temperature dependences of magnetization, resistivity, and magnetoresistance of…

❝When I see felonies dismissed, that tells me either the federal officers have filed affidavits that are not truthful and that has been uncovered, or US attorneys reviewing the cases realize the evidence does not support the charges. … It seems this is a way to detain people, hold them in custody, instill fear and discourage people from exercising their first amendment rights.❞
— legal expert Cristine Soto DeBerry
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Some new results on $\Delta$-spaces
I. Juh\'asz, J. van Mill, L. Soukup, Z. Szentmikl\'ossy
https://arxiv.org/abs/2510.04242 https://arxiv.org/pdf/…

Some new results on $Δ$-spaces
A topological space $X$ is a $Δ$-space (or $X \in Δ$) if for any decreasing sequence $\{A_n : n < ω\}$ of subsets of $X$ with empty intersection there is a (decreasing) sequence $\{U_n : n < ω\}$ of open sets with empty intersection such that $A_n \subset U_n$ for all $n < ω$. In this note we prove the following results concerning $Δ$-spaces. 1) Every $T_3$ countably compact $Δ$-space is compact. 2) If there is a $T_1$ crowded Baire $Δ$-space then there is an inner model with a meas…