Massless Dirac Fermions in a Square Optical Lattice

Details Massless Dirac Fermions in a Square Optical Lattice Massless Dirac Fermions in a Square Optical Lattice

2009-02-27

arxiv.org/abs/0902.4746v1

Phys. Rev. A 79, 043621 (2009)

Physics

Condensed Matter

Other Condensed Matter

Scientific paper

10.1103/PhysRevA.79.043621

We propose a novel scheme to simulate and observe massless Dirac fermions with cold atoms in a square optical lattice. A U(1) adiabatic phase is created by two laser beams for the tunneling of atoms between neighbor lattice sites. Properly adjusting the tunneling phase, we find that the energy spectrum has conical points in per Brillouin zone where band crossing occurs. Near these crossing points the quasiparticles and quasiholes can be considered as massless Dirac fermions. Furthermore, the anisotropic effects of massless Dirac fermions are obtained in the present square lattice model. The Dirac fermions as well as the anisotropic behaviors realizeded in our system can be experimentally detected with the Bragg spectroscopy technique.

Affiliated with

Also associated with

No associations

Rating

Massless Dirac Fermions in a Square Optical Lattice 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 Massless Dirac Fermions in a Square Optical Lattice, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Massless Dirac Fermions in a Square Optical Lattice will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-571678