Quark and pion condensation in a chromomagnetic background field
The general features of quark and pion condensation in dense quark matter with flavor asymmetry have been considered at finite temperature in the presence of a chromomagnetic background field modeling the gluon condensate. In particular, pion condensation in the case of a constant abelian chromomagn...
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Veröffentlicht in: | The European physical journal. C, Particles and fields Particles and fields, 2007-02, Vol.49 (3), p.709-719 |
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Hauptverfasser: | , , , |
Format: | Artikel |
Sprache: | eng |
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Online-Zugang: | Volltext |
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Zusammenfassung: | The general features of quark and pion condensation in dense quark matter with flavor asymmetry have been considered at finite temperature in the presence of a chromomagnetic background field modeling the gluon condensate. In particular, pion condensation in the case of a constant abelian chromomagnetic field and zero temperature has been studied both analytically and numerically. Under the influence of the chromomagnetic background field the effective potential of the system is found to have a global minimum for a finite pion condensate even for small values of the effective quark coupling constant. In the strong field limit, an effective dimensional reduction has been found to take place. |
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ISSN: | 1434-6044 1434-6052 |
DOI: | 10.1140/epjc/s10052-006-0143-0 |