pith. sign in

arxiv: 0907.1533 · v2 · pith:EZCQSWV3new · submitted 2009-07-09 · ❄️ cond-mat.quant-gas · cond-mat.supr-con

Luttinger liquid of trimers in Fermi gases with unequal masses

classification ❄️ cond-mat.quant-gas cond-mat.supr-con
keywords trimersenergyfermigasesliquidluttingerappearsattractive
0
0 comments X
read the original abstract

We investigate one dimensional attractive Fermi gases in spin-dependent optical lattices. We show that three-body bound states - "trimers" - exist as soon as the two tunneling rates are different. We calculate the binding energy and the effective mass of a single trimer. We then show numerically that for finite and commensurate densities $n_\uparrow=n_\downarrow/2$ an energy gap appears, implying that the gas is a one-component Luttinger liquid of trimers with suppressed superfluid ordering. The boundaries of this novel phase are given. We discuss experimental situations to test our predictions.

This paper has not been read by Pith yet.

discussion (0)

Sign in with ORCID, Apple, or X to comment. Anyone can read and Pith papers without signing in.