Chiral symmetry breaking and quark confinement in the nilpotency expansion of QCD

Details Chiral symmetry breaking and quark confinement in the nilpotency expansion of QCD Chiral symmetry breaking and quark confinement in the nilpotency expansion of QCD

2010-10-04

arxiv.org/abs/1010.0596v2

Phys.Rev.D83:114504,2011

Physics

High Energy Physics

High Energy Physics - Lattice

33 pages

Scientific paper

10.1103/PhysRevD.83.114504

We apply to lattice QCD a bosonization method previously developed in which dynamical bosons are generated by time-dependent Bogoliubov transformations. The transformed action can be studied by an expansion in the inverse of the nilpotency index, which is the number of fermionic states in the structure function of composite bosons. When this number diverges the model is solved by the saddle point method which has a variational interpretation. We give a stationary covariant solution for a background matter field whose fluctuations describe mesons. In the saddle point approximations live fermionic quasiparticles with quark quantum numbers which are confined, in the sense that they propagate only in pointlike color singlets. Conditions for chiral symmetry breaking are determined, to be studied numerically, and a derivation of mesons-nucleons action is outlined.

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