Competition of superfluidity and density waves in one-dimensional Bose-Fermi mixtures

Details Competition of superfluidity and density waves in one-dimensional Bose-Fermi mixtures Competition of superfluidity and density waves in one-dimensional Bose-Fermi mixtures

2010-04-09

arxiv.org/abs/1004.1592v1

Phys. Rev. A 81, 053626 (2010)

Physics

Condensed Matter

Quantum Gases

9 pages, RevTeX 4, 1 EPS figure

Scientific paper

10.1103/PhysRevA.81.053626

We study a mixture of one-dimensional bosons and spinless fermions at incommensurate filling using phenomenological bosonization and Green's functions techniques. We derive the relation between the parameters of the microscopic Hamiltonian and macroscopic observables. Galilean invariance results in extra constraints for the current current interactions. We obtain the exact exponents for the various response functions, and show that superfluid fluctuations are enhanced by the effective boson-fermion density-density interaction and suppressed by the effective boson-fermion current-current interaction. In the case of a bosonized model with purely density-density interaction, when the effective boson-fermion density-density interaction is weak enough, the superfluid exponent of the bosons has a non-monotonous variation with the ratio of the fermion velocity to the boson velocity. By contrast, density-wave exponent and the exponent for fermionic superfluidity are monotonous functions of the velocity ratio.

Affiliated with

Also associated with

No associations

Rating

Competition of superfluidity and density waves in one-dimensional Bose-Fermi mixtures does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Competition of superfluidity and density waves in one-dimensional Bose-Fermi mixtures, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Competition of superfluidity and density waves in one-dimensional Bose-Fermi mixtures will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-221509