One-particle excitations and bound states in non-relativistic current $\times$ current model

A. N. Vall, S. E. Korenblit, V. M. Leviant, A. V. Sinitskaya

Published 1995-08-18Version 1

Vacuum structure, one-particle excitations' spectra and bound states of these excitations are studied in frame of non-relativistic quantum field model with current $\times$ current type interaction. Hidden symmetry of the model is found. It could be broken or exact depending on the coupling constant value. The effect of "piercing" vacuum , generating the appearance of heavy fermionic excitations, could occur in the spontaneously broken phase.