Parity realization in Vector-like theories from Fermion Bilinears

Details Parity realization in Vector-like theories from Fermion Bilinears Parity realization in Vector-like theories from Fermion Bilinears

2008-04-08

arxiv.org/abs/0804.1338v1

JHEP0804:035,2008

Physics

High Energy Physics

High Energy Physics - Theory

12 pages, no figures To be published in JHEP

Scientific paper

10.1088/1126-6708/2008/04/035

We reconsider in this paper the old aim of trying to understand if the observed realization of discrete symmetries as Parity or CP in the QCD vacuum can be satisfied from first principles. We show how under the appropriate assumptions implicitely done by Vafa and Witten in their old paper on parity realization in vector-like theories, all parity and CP odd operators constructed from fermion bilinears of the form $\bar\psi\tilde O\psi$ should take a vanishing vacuum expectation value in a vector-like theory with N degenerate flavours (N>1). In our analysis the Vafa-Witten theorem on the impossibility to break spontaneously the flavour symmetry in a vector-like theory plays a fundamental role.

Affiliated with

Also associated with

No associations

Rating

Parity realization in Vector-like theories from Fermion Bilinears does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Parity realization in Vector-like theories from Fermion Bilinears, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Parity realization in Vector-like theories from Fermion Bilinears will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-541401