Physics – Condensed Matter – Other Condensed Matter
Scientific paper
2006-11-13
Phys. Rev. A 75, 063616 (2007)
Physics
Condensed Matter
Other Condensed Matter
5 pages, 4 figures
Scientific paper
We study the effects of rotation on one-dimensional ultra-cold bosons confined to a ring lattice. For commensurate systems, at a critical value of the rotation frequency, an infinitesimal interatomic interaction energy opens a gap in the excitation spectrum, fragments the ground state into a macroscopic superposition of two states with different circulation and generates a sudden change in the topology of the momentum distribution. These features are reminiscent of the topological changes in the Fermi surface that occurs in the Lifshitz transition in fermionic systems. The entangled nature of the ground state induces a strong enhancement of quantum correlations and decreases the threshold for the Mott insulator transition. In contrast to the commensurate case, the incommensurate lattice is rather insensitive to rotation. Our studies demonstrate the utility of noise correlations as a tool for identifying new physics in strongly correlated systems.
Burnett Keith
Clark Charles W.
Rey Ana Maria
Satija Indubala I.
No associations
LandOfFree
Lifshitz-like transition and enhancement of correlations in a rotating bosonic ring 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 Lifshitz-like transition and enhancement of correlations in a rotating bosonic ring lattice, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Lifshitz-like transition and enhancement of correlations in a rotating bosonic ring lattice will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-669159