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Regular version of the site

Article

Phase diagrams of polarized ultra-cold gases on attractive-U Hubbard ladders

Journal of Physics: Conference Series. 2019. Vol. 1163. No. 012046. P. 012046-1-012046-5.
Burovski E., Ikhsanov R., Kuznetsov A., Kagan M.

We consider a quasi-one-dimensional model of a two-component Fermi gas at zero temperature on one, two and three-leg attractive-U Hubbard ladders. We construct the grand canonical phase diagram of a two-component spin-polarized gas. We find that the structure of the phase diagram of the attractive-U Hubbard model for two and three leg ladders significantly differs q from the structure of the phase diagram of a single chain. We argue that the single chain model is a special case, and that multichain ladders display qualitative features of the 1D-to-3D crossover, observed in experiments with trapped ultracold gases.