Thermodynamics of strong coupling 2-color QCD

2-color QCD at finite temperature T and chemical potential \mu is revisited in the strong coupling limit on the lattice. The phase structure in the space of T, \mu and the quark mass m is elucidated with the use of the mean field approximation and the large dimensional expansion. We put special emphasis on the interplay among the chiral condensate, the diquark condensate and the quark density in the T-\mu-m space. Qualitative comparison is made between our results and those of recent Monte-Carlo simulations in 2-color QCD.