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cond-mat.stat-mech2026
The flux of particles in a one-dimensional Fleming-Viot process
Éric Brunet, Bernard Derrida
The Fleming-Viot process describes a system of particles diffusing on a graph with an absorbing site. Whenever one of the particles is absorbed, it is replaced by a new particl…
cond-mat.stat-mech2025
Operator Spreading, Duality, and the Noisy Long-Range FKPP Equation
Tianci Zhou, Éric Brunet, Xiaolin Qi
Operator spreading provides a new characterization of quantum chaos beyond the semi-classical limit. There are two complementary views of how the characteristic size of an operator…