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cond-mat.stat-mech2026
Exact Microscopic One-Body Reduction in the Symmetric Exclusion Process
Olivier Bénichou, Aurélien Grabsch
The symmetric exclusion process (SEP) is a paradigmatic model of interacting particle transport. Its current--density correlations are governed by an infinite many-body hierarchy o…
cond-mat.stat-mech2026
Transverse geometry reshapes current and tracer fluctuation amplitudes in quasi-one-dimensional single files
Olivier Bénichou, Aurélien Grabsch
Single-file transport means no overtaking: particles move in a narrow channel while preserving their longitudinal order. This simple constraint has profound dynamical consequences,…