Spontaneous chiral symmetry breaking in the linked cluster expansion

22 November 2002

journal article
research article
Published by American Physical Society (APS) in Physical Review D

Vol. 66 (9) , 096006
https://doi.org/10.1103/physrevd.66.096006

Abstract

We investigate dynamical chiral symmetry breaking in Coulomb gauge Hamiltonian QCD. Within the framework of the linked cluster expansion we extend the BCS ansatz for the vacuum and include a correlation beyond the quark-antiquark pairing. In particular we study the effects of the three-body correlations involving quark-antiquark and transverse gluons. The high momentum behavior of the resulting gap equation is discussed and a numerical computation of the chiral symmetry breaking is presented.

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