Pomeranchuk cooling of SU(N) ultracold fermions in optical lattice
ORAL
Abstract
We investigate thermodynamic properties of a half-filled SU($2N$) Fermi-Hubbard model in two-dimensional square lattice using the determinantal Quantum Monte Carlo simulation. We address the question how the large number of hyperfine-spin components makes thermodynamic properties of SU($N$) ultracold fermions different from the conventional Hubbard model with $N$=2. Various thermodynamic quantities such as entropy, charge fluctuations, and spin correlations have been calculated. We devote special attention to the interaction-induced adiabatic cooling: an analogue of the Pomeranchuk effect in Helium-3.
*This work was supported by the NSF DMR-1105945 and the AFOSR-YIP program
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