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Charged pion condensation in anti-parallel electromagnetic fields and nonzero isospin density

Авторы: Chao J.Y., Huang M., Radzhabov A.

Журнал: Chinese Physics C

Том: 44

Номер: 3

Год: 2020

Отчётный год: 2020

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Аннотация: The formation of charged pion condensate in anti-parallel electromagnetic fields and in the presence of the isospin chemical potential is studied in the two-flavor Nambu-Jona-Lasinio model. The method of Schwinger proper time is extended to explore the quantities in the off-diagonal flavor space, i.e. the charged pion. In this framework, are treated as bound states of quarks and not as point-like charged particles. The isospin chemical potential plays the role of a trigger for charged pion condensation. We obtain the associated effective potential as a function of the strength of the electromagnetic fields and find that it contains a sextic term which possibly induces a weak first order phase transition. The dependence of pion condensation on model parameters is investigated.

Индексируется WOS: 1

Индексируется Scopus: 1

Индексируется РИНЦ: 1

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