Low temperature TBA and GHD for simple integrable QFT
Statistical Mechanics
2024-06-25 v4 Quantum Gases
High Energy Physics - Theory
Exactly Solvable and Integrable Systems
Abstract
We derive the low temperature thermodynamic equations corrected by virtual processes for integrable QFT on large but finite size space circle. Obtained TBA's are solved numerically for the sinh-Gordon model. We also derive corresponding Euler scale generalized hydrodynamic (GHD) equations and display them explicitly for small occupation ratio of virtual quasiparticles. The spectrum of velocities for the linear approximation to GHD is numerically calculated.
Cite
@article{arxiv.2308.05010,
title = {Low temperature TBA and GHD for simple integrable QFT},
author = {Jacek Pawelczyk},
journal= {arXiv preprint arXiv:2308.05010},
year = {2024}
}
Comments
12 pages, 3 figures. v2: 13 pages, an appendix added, simplified GHD equations. v3: some typos corrected; v4 :18 pages, 5 figures, some simplifications and extensions, more appendices