Superfluid state in the periodic Anderson model with attractive interactions

Details Superfluid state in the periodic Anderson model with attractive interactions Superfluid state in the periodic Anderson model with attractive interactions

2010-07-31

arxiv.org/abs/1008.0036v1

J. Phys. Soc. Jpn. 79 (2010) 114401

Physics

Condensed Matter

Quantum Gases

16 pages, 8 figures

Scientific paper

10.1143/JPSJ.79.114401

We investigate the periodic Anderson model with attractive interactions by means of dynamical mean-field theory (DMFT). Using a continuous-time quantum Monte Carlo impurity solver, we study the competition between the superfluid state and the paramagnetic Kondo insulating state, and determine the phase diagram. At the chemical potential-induced phase transition from the Kondo insulating state to the superfluid state, a low-energy peak characteristic of the superfluid state appears inside the hybridization gap. We also address the effect of the confining potential in optical lattice systems by means of real-space DMFT calculations.

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