Spontaneous Generation of Pseudoscalar Mass in the U(3)xU(3) Linear Sigma Model

Preprint

22 December 1997

preprint
Published by arXiv in arXiv

Abstract

A novel, nonperturbative, way to generate chiral symmetry breaking is discussed within the linear sigma model and 3 flavours, including a nonet of scalar and a nonet of pseudoscalar mesons. After spontaneous chiral symmetry breaking in the vacuum at the tree level the scalar nonet obtains mass, while the pseudoscalars are massless. Then, including quantum loops in a nonperturbative, self- consistent way chiral symmetry is broken in a second step, and also the pseudoscalars become massive.

Keywords

SPONTANEOUS GENERATION
SYMMETRY BREAKING
PSEUDOSCALAR MASS
NONPERTURBATIVE
CHIRAL SYMMETRY
PSEUDOSCALARS
LINEAR SIGMA
SIGMA MODEL
NONET

All Related Versions

Version 1, 1997-12-22, ArXiv
Version 2, 1998-03-20, ArXiv
Published version: Physics Letters B, 426 (1-2), 105.

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