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Fulde-Ferrell--Larkin-Ovchinnikov state in the dimensional crossover between one- and three-dimensional lattices
Dong-Hee Kim, Päivi Törmä
We present a full phase diagram for the one-dimensional (1D) to three-dimensional (3D) crossover of the Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) state in an attractive Hubbard model…
Expansion dynamics of the Fulde-Ferrell-Larkin-Ovchinnikov state
J. Kajala, F. Massel, P. Torma
We consider a two-component Fermi gas in the presence of spin imbalance, modeling the system in terms of a one-dimensional attractive Hubbard Hamiltonian initially in the presence…
Density response of a trapped Fermi gas: a crossover from the pair vibration mode to the Goldstone mode
A. Korolyuk, J. J. Kinnunen, P. Törmä
We consider the density response of a trapped two-component Fermi gas. Combining the Bogoliubov-deGennes method with the random phase approximation allows the study of both collect…
Collision of one dimensional (1D) spin polarized Fermi gases in an optical lattice
J. Kajala, F. Massel, And P. Törmä
In this work we analyze the dynamical behavior of the collision between two clouds of fermionic atoms with opposite spin polarization. By means of the time-evolving block decimatio…
Expansion dynamics in the one-dimensional Fermi-Hubbard model
J. Kajala, F. Massel, P. Törmä
Expansion dynamics of interacting fermions in a lattice are simulated within the one-dimensional (1D) Hubbard model, using the essentially exact time-evolving block decimation (TEB…