https://doi.org/10.1140/epjc/s10052-006-0143-0
Regular Article - Theoretical Physics
Quark and pion condensation in a chromomagnetic background field
1
Institut für Physik, Humboldt-Universität zu Berlin, 12489, Berlin, Germany
2
Institute of High Energy Physics, 142281, Protvino, Moscow Region, Russia
3
Faculty of Physics, Department of Theoretical Physics, Moscow State University, 119899, Moscow, Russia
* e-mail: zhukovsk@physik.hu-berlin.de
Received:
7
June
2006
Revised:
15
September
2006
Published online:
19
December
2006
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.
© Springer-Verlag Berlin Heidelberg, 2007
