Physics – Condensed Matter – Quantum Gases
Scientific paper
2012-03-27
Physics
Condensed Matter
Quantum Gases
19 pages, 25 figures
Scientific paper
We present a systematic investigation of attractive binary mixtures in presence of both spin- and mass-imbalance in one dimensional setups described by the Hubbard model. After discussing typical cold atomic experimental realizations and the relation between microscopic and effective parameters, we study several many-body features of trapped Fermi-Fermi and Bose-Bose mixtures such as density profiles, momentum distributions and correlation functions by means of numerical density-matrix-renormalization-group and Quantum Monte Carlo simulations. In particular, we focus on the stability of Fulde-Ferrell-Larkin-Ovchinnikov, dimer and trimer fluids in inhomogeneous situations, as typically realized in cold gas experiments due to the harmonic confinement. We finally consider possible experimental signatures of these phases both in the presence of a finite polarization and of a finite temperature.
Dalmonte Marcello
Dieckmann K.
Feiguin Adrian E.
Hartl C.
Heidrich-Meisner Fabian
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