Chiral symmetry breaking in {ital d}=3 NJL model in external gravitational and magnetic fields

Journal Article · Thu Aug 01 00:00:00 EDT 1996 · Physical Review, D

DOI:https://doi.org/10.1103/PhysRevD.54.2968· OSTI ID:286864

Gitman, D M ^[1]; Odintsov, S D ^[2]; Shilnov, Y I ^[3]

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1. Instituto de Fisica, Universidade de Sao Paulo, Caixa Postal 66318, 05389-970-Sao Paulo, S.P. (Brazil)
2. Department of Math. Analys., Tomsk Pedagogical University, 634041 Tomsk (Russia)
3. Department Theoretical Physics, Kharkov State University, Svobody Sq. 4, Kharkov 310077 (Ukraine)

The phase structure of the {ital d}=3 Nambu{endash}Jona-Lasinio model in curved spacetime with a magnetic field is investigated in leading order of the 1/{ital N} expansion and in the linear curvature approximation (an external magnetic field is treated exactly). The possibility of chiral symmetry breaking under the combined action of the external gravitational and magnetic fields is shown explicitly. In some circumstances the chiral symmetry may be restored due to the compensation of the magnetic field by the gravitational field. {copyright} {ital 1996 The American Physical Society.}

• OSTI ID: 286864
• Journal Information: Physical Review, D, Vol. 54, Issue 4; Other Information: PBD: Aug 1996
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
CHIRAL SYMMETRY
SYMMETRY BREAKING
UNIFIED GAUGE MODELS
GRAVITATIONAL FIELDS
MAGNETIC FIELDS
SPACE-TIME
EXPANSION
PHASE STUDIES
EXTERNAL FIELDS
CURVATURE