Dispersion relation of the pion in the Nambu–Jona-Lasinio model
- 15 October 1988
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review D
- Vol. 38 (8) , 2646-2647
- https://doi.org/10.1103/physrevd.38.2646
Abstract
The propagation of a pionic wave in the Nambu–Jona-Lasinio model is reexamined in the framework of the time-dependent Hartree-Fock theory. It is found that the trial generator of the vacuum fluctuations should be consistent with the chosen configuration space of single-particle states (spanned by occupied negative-energy states and by empty valence states).Keywords
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