Non-Gaussian work statistics at finite-time driving
Quantum Physics
2023-01-13 v2 Statistical Mechanics
Abstract
We study properties of the work distribution of a many-body system driven through a quantum phase transition in finite time. We focus on the non-Gaussianity of the distribution, which we characterize through two quantitative metrics: skewness and negentropy. In particular, we focus on the quantum Ising model and show that a finite duration of the ramp enhances the non-Gaussianity of the distribution for a finite size system. By examining the characteristics of the full distribution, we observe that there is a clear intermediate regime between the sudden quench and adiabatic limits, where the distribution becomes increasingly skewed.
Cite
@article{arxiv.2208.06199,
title = {Non-Gaussian work statistics at finite-time driving},
author = {Krissia Zawadzki and Anthony Kiely and Gabriel T. Landi and Steve Campbell},
journal= {arXiv preprint arXiv:2208.06199},
year = {2023}
}