Thermodynamic perspective on quantum fluctuations

TL;DR

This paper explores the role of fluctuations in quantum systems from a thermodynamic perspective, connecting fluctuation forces and fluctuation theorems to enhance understanding of small-scale quantum dynamics.

Contribution

It provides an integrated overview of fluctuation forces and fluctuation theorems, bridging two research areas for a comprehensive understanding of quantum fluctuations.

Findings

Clarifies the relationship between fluctuation forces and fluctuation theorems

Highlights the importance of fluctuations in small quantum systems

Provides an accessible introduction for researchers in both fields

Abstract

What is the major difference between large and small systems? At small length-scales the dynamics is dominated by fluctuations, whereas at large scales fluctuations are irrelevant. Therefore, any thermodynamically consistent description of quantum systems necessitates a thorough understanding of the nature and consequences of fluctuations. In this chapter, we outline two closely related fields of research that are commonly considered separately -- fluctuation forces and fluctuation theorems. Focusing on the main gist of these exciting and vivid fields of modern research, we seek to provide a instructive entry point for both communities of researchers interested in learning about the other.