Dynamical chiral symmetry breaking by a magnetic field and multi-quark interactions

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dc.creatorOsipov, A. A.
dc.creatorHiller, B.
dc.creatorBlin, A. H.
dc.creatorda Providencia, J.
dc.date2007-01-11
dc.date2007-05-21
dc.date.accessioned2026-07-07T08:11:38Z
dc.date.available2026-07-07T08:11:38Z
dc.descriptionCatalysis 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~10^{19} 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.
dc.description6 pages, 3 figures, added discussion and references, version to appear in Phys.Lett.B
dc.identifierhttps://arxiv.org/abs/hep-ph/0701090
dc.identifierhttp://arxiv.org/abs/hep-ph/0701090
dc.identifierPhys.Lett.B650:262-267,2007
dc.identifierdoi:10.1016/j.physletb.2007.05.033
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/132183
dc.subjectHigh Energy Physics - Phenomenology
dc.titleDynamical chiral symmetry breaking by a magnetic field and multi-quark interactions
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