Violations of discrete space-time symmetries in chiral effective field theory

TL;DR

This paper reviews recent theoretical advances in modeling violations of discrete space-time symmetries in hadronic and nuclear systems, focusing on chiral effective field theory extensions that incorporate these symmetry-breaking interactions.

Contribution

It introduces the development of chiral effective field theory frameworks that include discrete symmetry violations from Standard Model and beyond, with applications to few-body nuclear systems.

Findings

Construction of symmetry-violating chiral Lagrangians

Development of nucleon-nucleon potentials with symmetry violations

Applications to few-body nuclear systems

Abstract

We review recent progress in the theoretical description of the violation of discrete space-time symmetries in hadronic and nuclear systems. We focus on parity-violating and time-reversal-conserving interactions which are induced by the Standard Model weak interaction, and on parity- and time-reversal-violating interactions which can be caused by a nonzero QCD theta term or by beyond-the-Standard Model physics. We discuss the origins of such interactions and review the development of the chiral effective field theory extension that includes discrete symmetry violations. We discuss the construction of symmetry-violating chiral Lagrangians and nucleon-nucleon potentials and their applications in few-body systems.