Spontaneous non-Hermiticity in the Nambu–Jona-Lasinio model
نویسندگان
چکیده
We explore the physical consequences of a scenario when standard Hermitian Nambu--Jona-Lasinio (NJL) model spontaneously develops non-Hermitian PT-symmetric ground state via dynamical generation an anti-Hermitian Yukawa coupling. demonstrate emergence noncompact (NH) symmetry group which characterizes NH state. show that is broken both in weak- and strong-coupling regimes. In chiral limit at strong coupling, inhomogeneity, breaks translational symmetry. At weak spatially uniform state, lies boundary between PT-broken phases. Outside limit, minimal NJL does not possess stable
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ژورنال
عنوان ژورنال: Physical review
سال: 2021
ISSN: ['0556-2813', '1538-4497', '1089-490X']
DOI: https://doi.org/10.1103/physrevd.104.056023