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

Understand

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.