Tootfinder

Dynamic Avalanches: Rate-Controlled Switching and Race Conditions
Lishuai Jin, Martin van Hecke
https://arxiv.org/abs/2507.02387 https://

Dynamic Avalanches: Rate-Controlled Switching and Race Conditions
Avalanches are rapid cascades of rearrangements driven by cooperative flipping of hysteretic local elements. Here we show that flipping dynamics and race conditions -- where multiple elements become unstable simultaneously -- give rise to dynamic avalanches that cannot be captured by static models of interacting elements. We realize dynamic avalanches in metamaterials with controlled flipping times, and demonstrate how this allows to modify, promote, and direct avalanche behavior. Our work eluc…

Class field theory for function fields and finite abelian torsors
Bryden Cais, Shusuke Otabe
https://arxiv.org/abs/2507.02483 https://

Class field theory for function fields and finite abelian torsors
Let $U$ be a smooth and connected curve over an algebraically closed field of positive characteristic, with smooth compactification $X$. We generalize classical Geometric Class Field theory to provide a classification of fppf $G$-torsors over $U$ in terms of isogenies of generalized Jacobians, for any finite abelian group scheme $G$. We then apply this classification to give a novel description of the abelianized Nori fundmental group scheme of $U$ in terms of the Serre--Oort fundamental groups…

Happy #aphelion to those that celebrate

"Guryong Village (Korean: 구룡마을) is a shanty town in Seoul, South Korea. It is just across a six-lane motorway from Dogok-dong of the affluent Gangnam District. The area it is on has been inhabited since October 1925, although it only turned into a shantytown beginning in 1988. This was due to the city's rapid development prior to the 1988 Olympic Games, in which people in low-income areas were evicted from their houses and became squatters at the site."

#Blakes7 Series A, Episode 09 - Project Avalon
BLAKE: Yes, and Avalon was hit in the leg. [Shoots at a tumbler on a table. It falls over. He picks it up and inspects it] A nasty kick, that's all. Avon, what do you make of this? [Tosses the weapon to Avon.]
AVON: It's not standard issue. Low energy bolt discharge. This could bruise or stun, but it couldn't cause any ser…

Holographic symmetry algebra for the MHV sector revisited
Shamik Banerjee, Raju Mandal, Milan Patra
https://arxiv.org/abs/2508.02098 https://arxiv.org/pdf/…

Holographic symmetry algebra for the MHV sector revisited
We revisit the holographic symmetry algebra in the MHV sector. We find an infinite dimensional Abelian symmetry algebra whose generators are the conformally soft negative helicity gravitons and gluons. So the complete symmetry algebra in the MHV graviton sector is a semideirect product of the $w_{1+\infty}$ algebra and the infinite dimensional Abelian algebra. Similarly in the MHV gluon sector the symmetry algebra is a semidirect product of the $S$ algebra and the infinite dimensional Abelian a…

Applying Psychometrics to Large Language Model Simulated Populations: Recreating the HEXACO Personality Inventory Experiment with Generative Agents
Sarah Mercer, Daniel P. Martin, Phil Swatton
https://arxiv.org/abs/2508.00742

Applying Psychometrics to Large Language Model Simulated Populations: Recreating the HEXACO Personality Inventory Experiment with Generative Agents
Generative agents powered by Large Language Models demonstrate human-like characteristics through sophisticated natural language interactions. Their ability to assume roles and personalities based on predefined character biographies has positioned them as cost-effective substitutes for human participants in social science research. This paper explores the validity of such persona-based agents in representing human populations; we recreate the HEXACO personality inventory experiment by surveying…

Non-Abelian chiral kinetic theory with self-consistent semiclassical expansion
Xiao-Li Luo, Shu-Xiang Ma, Jian-Hua Gao
https://arxiv.org/abs/2507.02370 htt…

Non-Abelian chiral kinetic theory with self-consistent semiclassical expansion
We derive the chiral kinetic theory in a non-Abelian gauge field using a self-consistent semiclassical expansion. Within this new expansion scheme, we disentangle the Wigner equations up to second order and demonstrate that they do not introduce additional constraint equations. By integrating the covariant chiral kinetic equations in eight-dimensional phase space, we obtain the corresponding equations in seven-dimensional phase space. This reduction facilitates numerical simulations and practic…

Spatiotemporal hierarchy of thermal avalanches
Vladimir Yu. Rudyak, Dor Shohat, Yoav Lahini
https://arxiv.org/abs/2507.02573 https://…

Spatiotemporal hierarchy of thermal avalanches
In amorphous solids, frustrated elastic interactions conspire with thermal noise to trigger anomalously slow sequences of plastic rearrangements, termed "thermal avalanches", which play an important role during creep and glassy relaxations. Here we uncover the complex spatiotemporal structure of thermal avalanches in simulations of a model amorphous solid. We systematically disentangle mechanical and thermal triggering during logarithmic creep, revealing a hierarchy of fast localized cascades l…

Finite abelian groups acting on rationally connected threefolds II: groups of K3 type
Konstantin Loginov, Antoine Pinardin, Zhijia Zhang
https://arxiv.org/abs/2509.02531 https:/…

Finite abelian groups acting on rationally connected threefolds II: groups of K3 type
We study finite abelian groups acting on three-dimensional rationally connected varieties. We concentrate on the groups of K3 type, that is, abelian extensions by a cyclic group of groups that faithfully act on a K3 surface. In particular, if a finite abelian group faithfully acts on a threefold preserving a K3 surface (with at worst du Val singularities), then such a group is of K3 type. We prove a classification theorem for the groups of K3 type which can act on three-dimensional rationally c…