Order from disorder in closed systems via time reversal violation

TL;DR

This paper demonstrates through computational modeling that time-reversal violating forces can create more organized states from disorganized ones, challenging traditional entropy concepts and suggesting implications for early universe conditions.

Contribution

It provides a detailed computational example of T-violating interactions causing order formation, highlighting a novel mechanism contrary to classical entropy increase.

Findings

T-violating forces can produce organized states from disorganized ones.

Illustrates a Maxwell demon-like particle separation using T-violating interactions.

Suggests scenarios where T violation influences early universe organization.

Abstract

Definitions of entropy usually assume time-reversal (T) invariance of interactions, yet microscopically T is known to be violated. We present a detailed computational example of (uncharged) particle species separation (Maxwell demon) using an interaction that violates both parity (P) and T so that PT is preserved, consistent with the CPT invariance required in quantum field theory (C is charge conjugation). This illustrates how T-violating forces can produce more organized states from disorganized ones, contrary to expectations based on increase of entropy. We also outline several scenarios in which T-violating forces could lead to an organized state in the early Universe, starting from a still earlier disorganized state.