Tootfinder

Tides from the cloud can induce the fast disruption of star clusters and offer an explanation for Gaia strings
Xiao-Tong Chen, Guang-Xing Li
https://arxiv.org/abs/2510.08913 htt…

Tides from the cloud can induce the fast disruption of star clusters and offer an explanation for Gaia strings
Young stars form in clusters within molecular clouds, but older stars are evenly distributed across the galactic disk, necessitating an explanation for cluster dissolution. We analytically study tidal forces from cold molecular clouds as a key mechanism for accelerated cluster disruption. Cloud tides, caused by the gravitational pull of the parent cloud along the radial direction, arise from the spatial gradient of gravitational acceleration and drive cluster disruption. This mechanism activate…

Join me at two events at the British Library later this month:
https://www.bl.uk/stories/blogs/posts/knowledge-is-human
On 20 October, the British Library is joining forces with Wikimedia UK and the Wikimedia Foundation to explore the impact of AI on ope…

Knowledge is Human: The Information Ecosystem in the age of AI
A summit to mark the role of human-created, open knowledge in the age of AI and our collective responsibility to safeguard knowledge integrity and sustainability.

The Strength of Local Structures in Decentralized Network Formation
Jose M. Betancourt
https://arxiv.org/abs/2510.10997 https://arxiv.org/pdf/2510.10997

The Strength of Local Structures in Decentralized Network Formation
I study dynamic network formation games in which agents assign arbitrary values to network structures. Any such game admits an equivalent representation in terms of the values agents assign to its sub-structures, linking local valuations to equilibrium behavior. The game is a potential game precisely when all participants in a structure value it equally, yielding a closed-form stationary distribution. When valuations are restricted to a finite set of repeated sub-structures, or motifs, the mode…

On the geometric Satake equivalence for Kac-Moody groups
Alexis Bouthier, Eric Vasserot
https://arxiv.org/abs/2510.11466 https://arxiv.org/pdf/2510.11466…

On the geometric Satake equivalence for Kac-Moody groups
This article establishes a geometric Satake equivalence for affine Kac-Moody groups as an equivalence of abelian semisimple categories over algebraically closed fields. We define a well-behaved category of equivariant sheaves on the double affine grassmannian \Gr_{G}, seen as a infty-stack, that we equip with a t-structure. We obtain an Braden's hyperbolic localization theorem for such a stack and prove that the constant term functor is t-exact using dimension estimates for affine MV-cycles. We…

Semiclassical analytical solutions of the eigenstate thermalization hypothesis in a quantum billiard
Yaoqi Ye, Chengkai Lin, Xiao Wang
https://arxiv.org/abs/2510.12517 https://

Semiclassical analytical solutions of the eigenstate thermalization hypothesis in a quantum billiard
We derive semiclassical analytical solutions for both the diagonal and off-diagonal functions in the eigenstate thermalization hypothesis (ETH) in a quarter-stadium quantum billiard. For a representative observable, we obtain an explicit expression and an asymptotic closed-form solution that naturally separate into a local contribution and a phase-space correlation term. These analytical results predict the band structure of the observable matrix, including its bandwidth and scaling behavior. W…

Gamma-rays from Wolf-Rayet stellar winds
A. Inventar, G. Peron, S. Recchia, S. Gabici
https://arxiv.org/abs/2510.12510 https://arxiv.org/pdf/2510.12510

Gamma-rays from Wolf-Rayet stellar winds
Gamma-ray observations of young star clusters have recently provided evidence for particle acceleration occurring at stellar wind termination shocks, fueled by the mechanical energy of stellar winds from massive stars. In this work, we explore the possibility that the wind from a single powerful star, whether isolated or part of a cluster, can alone provide sufficient energy to generate gamma-ray emission detectable by current instruments. This scenario is particularly relevant given that a sig…

Fibration Symmetries and Cluster Synchronization in Multi-Body Systems
Margherita Bert\`e, Tommaso Gili
https://arxiv.org/abs/2510.11207 https://arxiv.org/…

Fibration Symmetries and Cluster Synchronization in Multi-Body Systems
Based on recent advances in fibration symmetry theory, we investigate how structural symmetries influence synchronization in systems with higher-order interactions (HOI). Using bipartite graph representations, we identify a node partition in fibres, based on equivalent incidence relations in hypergraphs. We study how identical nodes with an isomorphic input set can synchronize due to structural properties under our specific model assumptions, examining the dynamical model of Kuramoto with highe…

Cluster and Halo Structures of Light Nuclei within the NUCLEI-PACK Framework
H. M. Maridi
https://arxiv.org/abs/2510.10741 https://arxiv.org/pdf/2510.10741…

Cluster and Halo Structures of Light Nuclei within the NUCLEI-PACK Framework
As part of the ongoing NUCLEI-PACK project, this study presents a semi-classical framework for exploring the microscopic geometry of light and exotic nuclei based on optimized sphere packing of nucleons and clusters. Starting from explicit nucleon coordinates generated by the packing algorithm, the model provides direct access to charge, matter, and core--valence radii, allowing quantitative analysis of clustering and halo formation. The study covers one-nucleon halo nuclei ($^{11}$Be, $^{15}$C…

In 1873, a choir of formerly enslaved African American students from the newly established Fisk University, Tennessee, embarked on a fundraising tour of the UK https://www.nationalarchives.gov.uk/explore-the-collection/stories/photograph-of-the…

Triangulated Categories Admitting Linear Generators
Marina Godinho, Dave Murphy
https://arxiv.org/abs/2510.12433 https://arxiv.org/pdf/2510.12433

Triangulated Categories Admitting Linear Generators
The main result of this paper is that there is an additive equivalence between $\overline{\mathcal{C}}_n$, the Paquette-Yildirim completion of the discrete cluster categories of Dynkin type $A_{\infty}$, and the perfect derived category of a certain DG algebra. This additive equivalence preserves some of the triangulated structure: it commutes with the suspension functor and preserves triangles with at least two indecomposable terms. In the process, we introduce the notion of a linear generator…