Quark and pion condensation in a chromomagnetic background field |
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Authors: | D Ebert KG Klimenko VC Zhukovsky AM Fedotov |
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Institution: | 1.Institut für Physik,Humboldt-Universit?t zu Berlin,Berlin,Germany;2.Institute of High Energy Physics,Protvino,Russia;3.Faculty of Physics, Department of Theoretical Physics,Moscow State University,Moscow,Russia |
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Abstract: | 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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