Year: 1993
Type: article
Abstract: We consider here chiral symmetry breaking through a nontrivial vacuum structure with quark-antiquark condensates. We then relate the condensate function to the wave function of the pion as a Goldstone mode. This simultaneously yields the pion also as a quark-antiquark bound state as a localized zero mode in vacuum. We illustrate the above through the Nambu---Jona-Lasinio model to calculate different pionic properties in terms of the vacuum structure for breaking of exact or approximate chiral symmetry, as well as the condensate fluctuations giving rise to $\ensuremath{\sigma}$ mesons.
Authors: H. Mishra, S. P. Misra
Institution: Institute of Physics, Bhubaneshwar
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W1974989281