Author(s):
Osipov, A. A. 
; Hiller, B. ; Blin, A. H. ; Providência, J. da
Date: 2007
Persistent ID: http://hdl.handle.net/10316/4370
Origin: Estudo Geral - Universidade de Coimbra
Document details
Dynamical chiral symmetry breaking by a magnetic field and multi-quark interact...
Description
Catalysis of dynamical symmetry breaking by a constant magnetic field in (3+1) dimensions is considered. We use the three flavour Nambu-Jona-Lasinio type model with 't Hooft and eight-quark interaction terms. It is shown that the multi-quark interactions introduce new additional features to this phenomenon: (a) the local minimum of the effective potential catalyzed by the constant magnetic field is smoothed out with increasing strength of the field at the characteristic scale H~1019 G, (b) the multi-quark forces generate independently another local minimum associated with a larger dynamical fermion mass. This state may exist even for multi-quark interactions with a subcritical set of couplings, and is globally stable with respect to a further increase of the magnetic field. http://www.sciencedirect.com/science/article/B6TVN-4NT84KV-3/1/9623a1ac5d9da295ff988f629174e22c
Catalysis of dynamical symmetry breaking by a constant magnetic field in (3+1) dimensions is considered. We use the three flavour Nambu-Jona-Lasinio type model with 't Hooft and eight-quark interaction terms. It is shown that the multi-quark interactions introduce new additional features to this phenomenon: (a) the local minimum of the effective potential catalyzed by the constant magnetic field is smoothed out with increasing strength of the field at the characteristic scale H~1019 G, (b) the multi-quark forces generate independently another local minimum associated with a larger dynamical fermion mass. This state may exist even for multi-quark interactions with a subcritical set of couplings, and is globally stable with respect to a further increase of the magnetic field. http://www.sciencedirect.com/science/article/B6TVN-4NT84KV-3/1/9623a1ac5d9da295ff988f629174e22c
Document Type
Article
Language English
Language English
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