  Quantum phase transition of fermionic atoms in anisotropic triangular optical
lattice was investigated by dynamical cluster approximation combining with
continuous time quantum Monte Carlo algorithm. The temperature-interaction
phase diagram for different hoping terms and the competition between the
anisotropic parameter and interaction is presented. Our results show that the
system undergoes Mott transition from Fermi liquid to Mott insulator while the
repulsive interaction reach the critical value. The Kondo metal characterized
by Kondo peak in the density of states is found in this systems and the
pseudogap are suppressed at low temperature due to the Kondo effect. We also
propose a feasible experiment protocol to observe these phenomenon in the
anisotropic triangular optical lattice with the cold atoms, in which the hoping
terms can be varied by the lattice depth and the atomic interaction can be
adjusted via Feshbach resonance.
