Quantum spin chains at finite temperatures

TL;DR

This paper reviews recent advances in calculating physical properties of interacting quantum systems at finite temperatures, focusing on one-dimensional quantum spin chains as key examples, highlighting exact evaluation methods.

Contribution

It provides a pedagogical overview of exact methods for finite-temperature analysis in quantum spin chains, emphasizing recent progress.

Findings

Exact evaluation techniques for quantum spin chains at finite temperatures.

Detailed discussion of 1D quantum spin chains as representative models.

Summary of recent theoretical developments in the field.

Abstract

This is a pedagogical review on recent progress in the exact evaluation of physical quantities in interacting quantum systems at finite temperatures. 1D quantum spin chains are discussed in detail as typical examples.