Thermodynamic bounds on the asymmetry of cross-correlations with dynamical activity and entropy production

TL;DR

This paper derives thermodynamic bounds on the asymmetry of cross-correlations in nonequilibrium systems, linking it to dynamical activity and entropy production, with broad applicability and experimental relevance.

Contribution

It establishes the first thermodynamic bounds on cross-correlation asymmetry in terms of dynamical activity and entropy production.

Findings

Bounds are broadly applicable to nonequilibrium systems.

Cross-correlation asymmetry is quantitatively linked to entropy production.

Bounds are experimentally testable.

Abstract

Entropy production and dynamical activity are two complementary aspects in nonequilibrium physics. The asymmetry of cross-correlation, serving as a distinctive feature of nonequilibrium, also finds widespread utility. In this Letter, we establish two thermodynamic bounds on the normalized asymmetry of cross-correlation in terms of dynamical activity and entropy production rate. These bounds demonstrate broad applicability, and offer experimental testability.