Chromomagnetic catalysis of color superconductivity in a (2+1)-dimensional Nambu{endash}Jona-Lasinio model

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 and diquark 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.