Exact Thermodynamics and Transport in the Classical Sine-Gordon Model
We revisit the exact thermodynamic description of the classical sine-Gordon field theory, a notorious integrable model. We found that existing results in the literature based on the soliton-gas picture did not correctly take into account light, but extended, solitons and thus led to incorrect results. This issue is regularized upon requantization: we derive the correct thermodynamics by taking the semiclassical limit of the quantum model. Our results are then extended to transport settings by means of Generalized Hydrodynamics.
PDF AbstractCategories
Statistical Mechanics
Quantum Gases
High Energy Physics - Theory
Pattern Formation and Solitons
Exactly Solvable and Integrable Systems
