3 papers
cond-mat.stat-mech2026
A bottom-up approach to fluctuating hydrodynamics: Coarse-graining of stochastic lattice gases and the Dean-Kawasaki equation
Soumyabrata Saha, Sandeep Jangid, Thibaut Arnoulx de Pirey +2
Fluctuating hydrodynamics provides a quantitative, large-scale description of many-body systems in terms of smooth variables, with microscopic details entering only through a small…
cond-mat.stat-mech2025
Self-organized criticality in complex model ecosystems
Thibaut Arnoulx de Pirey
We show that spatial extensions of many-species population dynamics models, such as the Lotka-Volterra model with random interactions we focus on in this work, generically exhibit…
cond-mat.stat-mech2025
Transitions driven by multibody interactions in an effective model of active matter
Thibaut Arnoulx de Pirey, Frédéric van Wijland
When out-of-equilibrium particles interact by means of pairwise forces, their stationary distribution in general exhibits many-body interactions. In the particular case of active p…