Effective Hamiltonian for fermions in an optical lattice across Feshbach resonance

Details Effective Hamiltonian for fermions in an optical lattice across Feshbach resonance Effective Hamiltonian for fermions in an optical lattice across Feshbach resonance

2005-08-30

arxiv.org/abs/cond-mat/0508745v1

Phys. Rev. Lett. 95, 243202 (2005).

Physics

Condensed Matter

Other Condensed Matter

5 pages, 2 figures

Scientific paper

10.1103/PhysRevLett.95.243202

We derive the Hamiltonian for cold fermionic atoms in an optical lattice across a broad Feshbach resonance, taking into account of both multiband occupations and neighboring-site collisions. Under typical configurations, the resulting Hamiltonian can be dramatically simplified to an effective single-band model, which describes a new type of resonance between the local dressed molecules and the valence bond states of fermionic atoms at neighboring sites. On different sides of such a resonance, the effective Hamiltonian is reduced to either a t-J model for the fermionic atoms or an XXZ model for the dressed molecules. The parameters in these models are experimentally tunable in the full range, which allows for observation of various phase transitions.

Affiliated with

Also associated with

No associations

Rating

Effective Hamiltonian for fermions in an optical lattice across Feshbach resonance 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 Effective Hamiltonian for fermions in an optical lattice across Feshbach resonance, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Effective Hamiltonian for fermions in an optical lattice across Feshbach resonance will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-116080