Quantized Vortex States of Strongly Interacting Bosons in a Rotating Optical Lattice

Details Quantized Vortex States of Strongly Interacting Bosons in a Rotating Optical Lattice Quantized Vortex States of Strongly Interacting Bosons in a Rotating Optical Lattice

2006-07-28

arxiv.org/abs/cond-mat/0607781v1

Phys. Rev. A 74, 063606 (2006)

Physics

Condensed Matter

Statistical Mechanics

12 Pages, 13 Figures, Version 1

Scientific paper

10.1103/PhysRevA.74.063606

Bose gases in rotating optical lattices combine two important topics in quantum physics: superfluid rotation and strong correlations. In this paper, we examine square two-dimensional systems at zero temperature comprised of strongly repulsive bosons with filling factors of less than one atom per lattice site. The entry of vortices into the system is characterized by jumps of 2 pi in the phase winding of the condensate wavefunction. A lattice of size L X L can have at most L-1 quantized vortices in the lowest Bloch band. In contrast to homogeneous systems, angular momentum is not a good quantum number since the continuous rotational symmetry is broken by the lattice. Instead, a quasi-angular momentum captures the discrete rotational symmetry of the system. Energy level crossings indicative of quantum phase transitions are observed when the quasi-angular momentum of the ground-state changes.

Affiliated with

Also associated with

No associations

Rating

Quantized Vortex States of Strongly Interacting Bosons in a Rotating 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 Quantized Vortex States of Strongly Interacting Bosons in a Rotating Optical Lattice, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Quantized Vortex States of Strongly Interacting Bosons in a Rotating Optical Lattice will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-365822