Finsler metrics and CPT

TL;DR

This paper explores how Finsler-like metrics relate to Lorentz symmetry breaking and CPT violation, examining their implications in quantum gravity, string theory, and particle physics, including effects on meson correlations and baryogenesis.

Contribution

It introduces the role of Finsler metrics in CPT violation contexts, especially in string theory D-particles, and analyzes their impact on particle physics phenomena.

Findings

Modified correlations for neutral meson pairs

New contributions to baryogenesis

Connections between Finsler metrics and symmetry violations

Abstract

The role of Finsler-like metrics in situations where Lorentz symmetry breaking and also CPT violation are discussed. Various physical instances of such metrics both in quantum gravity and analogue systems are discussed. Both differences and similarities between the cases will be emphasised. In particular the medium of D-particles that arise in string theory will be examined. In this case the breaking of Lorentz invariance, at the level of quantum fluctuations, together with concomitant CPT in certain situations will be analysed. In particular it will be shown correlations for neutral meson pairs will be modified and a new contribution to baryogenesis will appear.