Finite-temperature quantum Monte Carlo study of the one-dimensional polarized Fermi gas

摘要: Quantum Monte Carlo (QMC) techniques are used to provide an approximation-free investigation of the phases one-dimensional attractive Hubbard Hamiltonian in presence population imbalance. The temperature at which ``Fulde-Ferrell-Larkin-Ovchinnikov'' (FFLO) phase is destroyed by thermal fluctuations determined as a function polarization. It shown that confining potential does not dramatically alter FFLO regime and recent experiments on trapped atomic gases likely lie just within stable range.