Universal relaxational dynamics of gapped one dimensional models in the quantum sine-Gordon universality class

TL;DR

This paper develops a semiclassical method to analyze the low-temperature dynamics of gapped one-dimensional models in the sine-Gordon universality class, providing universal correlation function results when temperature is much lower than the energy gap.

Contribution

It introduces a semiclassical approach to compute universal correlation functions in gapped 1D models within the sine-Gordon class at low temperatures.

Findings

Derived asymptotically exact universal correlation functions

Applicable in the regime T << Delta

Provides insights into low-temperature dynamics of 1D gapped systems

Abstract

A semiclassical approach to the low-temperature real time dynamics of generic one-dimensional, gapped models in the sine-Gordon model universality class is developed. Asymptotically exact universal results for correlation functions are obtained in the temperature regime T << Delta, where Delta is the energy gap.