Geodesic
Dynamical $CP$-violation in quasilocal quark models at nonzero chemical potential
Zapiski Nauchnykh Seminarov POMI, Questions of quantum field theory and statistical physics. Part 19, Tome 335 (2006), pp. 5-21 Cet article a éte moissonné depuis la source Math-Net.Ru

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We consider the Quasilocal Quark Model of Nambu–Jona–Lasinio type as effective theory of non-perturbative QCD with scalar-pseudoscalar four-quark interaction with derivatives in fields at finite quark chemical potential. In the presence of a strong attraction in the scalar channel the chiral symmetry is spontaneously broken and as a consequence the composite meson states are generated. For special configurations of coupling constants, the dynamical CP-violation in the pseudoscalar sector can appear as a result of complexity of dynamical mass function generated at some value of quark density. 
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A. A. Andrianov; V. A. Andrianov; S. S. Afonin. Dynamical $CP$-violation in quasilocal quark models at nonzero chemical potential. Zapiski Nauchnykh Seminarov POMI, Questions of quantum field theory and statistical physics. Part 19, Tome 335 (2006), pp. 5-21. http://geodesic.mathdoc.fr/item/ZNSL_2006_335_a0/

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