Pairing in population imbalanced Fermion systems in one and two dimensions

by George Batrouni (Nice)

Wednesday 8 Dec 2010, 11:15 → 12:15 Europe/Zurich

Salle 727 du BSP (Cubotron) (EPFL)

We use Quantum Monte Carlo simulations to study pairing in one- and two-dimensional fermionic systems governed by the Hubbard model with attractive contact interaction and with imbalanced spin populations. We determine the phase diagram as a function of temperature and polarization and find that the "Fulde-Ferrell-Larkin-Ovchinnikov'' (FFLO) phase is quite robust and persists to higher temperature for higher polarization. We compare with experiments on one-dimensional systems currently underway.