295 research outputs found
Dynamical chiral symmetry breaking with Minkowski space integral representations
The fermion propagator is studied in the whole Minkowski space with the help
of the Schwinger-Dyson equations. Various integral representations are employed
to get solutions for the dynamical breaking of chiral symmetry in different
regimes of the coupling constant. In particular, in the case of massive boson,
we extend the singularity structure of the fermion propagator to the two real
pole Ansatz.Comment: 4 pages, 4 figures, published version in PR
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