How should we interpret the two transport relaxation times in the cuprates ?

TL;DR

This paper explains the presence of two distinct transport relaxation times in cuprate metals by analyzing scattering processes that differentiate between charge conjugation even and odd currents, supported by a developed transport equation.

Contribution

It introduces a theoretical framework linking two relaxation times to charge conjugation symmetry in scattering processes in cuprates.

Findings

Two relaxation times correspond to different charge conjugation symmetries.

The developed transport equation clarifies experimental observations.

Implications for understanding charge dynamics in cuprates.

Abstract

We observe that the appearance of two transport relaxation times in the various transport coefficients of cuprate metals may be understood in terms of scattering processes that discriminate between currents that are even, or odd under the charge conjugation operator. We develop a transport equation that illustrates these ideas and discuss its experimental and theoretical consequences.