Chromomagnetic Catalysis of Color Superconductivity in a (2+1)-dimensional NJL Model
Abstract
The influence of a constant uniform external chromomagnetic field H on the formation of color superconductivity has been investigated. The consideration was performed in the framework of a (2+1)-dimensional Nambu--Jona-Lasinio model with two different four-fermionic structures responsible for < qq> and diquark <qq> condensates. In particular, it was shown that there exists a critical value Hc of the external chromomagnetic field such that at H>Hc a nonvanishing diquark condensate is dynamically created (the so-called chromomagnetic catalysis effect of color superconductivity). Moreover, external chromomagnetic fields may in some cases enhance the diquark condensate of color superconductivity.
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