Université Bourgogne Europe

6 papers

gr-qc2026

Dynamical system approach to the spectral (in)stability of black holes under localised potential perturbations

T. Torres, S. R. Dolan

The aim of this work is to improve understanding of the resonant spectra of black holes under perturbations arising from e.g. compact objects or accretion disks in their vicinity.…

physics.optics2026

Spatio-temporal equilibrium thermodynamics of guided optical waves at positive and negative temperatures

Lucas Zanaglia, Josselin Garnier, Claire Michel +5

Optical thermalization has been recently studied in the 2D spatial evolution of (quasi-)monochromatic light waves propagating in multimode waveguides. Here, we investigate the spat…

math.AG2026

Higher-rank instantons sheaves on Fano threefolds

Gaia Comaschi, Daniele Faenzi

We define instanton sheaves of higher rank on smooth Fano threefolds X of Picard rank one and show that their topological classification depends on two integers, namely the rank n…

math-ph2026

Dynamics and equilibrium states of infinite systems of lattice bosons

Andreas Deuchert, Jonas Lampart, Marius Lemm

We consider the dynamics of systems of lattice bosons with infinitely many degrees of freedom. We show that their dynamics defines a group of automorphisms on a $C^{*}$ --algebra intr…

math.PR2026

Construction of ergodic IDLA forests in $Z^{d}$

Nicolas Chenavier, David Coupier, Keenan Penner +1

We prove the existence of infinite-volume IDLA forests in $Z^{d}$ , with $d \geq 2$ , based on a multi-source IDLA protocol. Unlike IDLA aggregates, the laws of the IDLA fore…

physics.optics2026

Irreversible thermalization vs reversible dynamics mediated by anomalous correlators: Wave turbulence theory and experiments in optical fibers

T. Torres, J. Garnier, L. Zanaglia +8

We theoretically and experimentally investigate spontaneous self-organization in a conservative (Hamiltonian) turbulent wave system, operating far from thermodynamic equilibrium. O…