Critical couplings for chiral symmetry breaking via instantons
Using an instanton effective action formalism, we compute the critical coupling for the nonperturbative formation of a dynamical mass via instantons in non-Abelian gauge theories with N_f massless fermions. Only continuous phase transitions are considered. For large values of N_f the critical coupli...
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Main Author | |
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Format | Journal Article |
Language | English |
Published |
07.03.2000
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Subjects | |
Online Access | Get full text |
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Summary: | Using an instanton effective action formalism, we compute the critical
coupling for the nonperturbative formation of a dynamical mass via instantons
in non-Abelian gauge theories with N_f massless fermions. Only continuous phase
transitions are considered. For large values of N_f the critical couplings are
found to be much smaller than the equivalent critical couplings obtained from
gauge exchange calculations in the ladder approximation. |
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Bibliography: | UTPT-00-04 |
DOI: | 10.48550/arxiv.hep-ph/0003059 |