Quantum criticality of a Bose gas in an optical lattice near the Mott transition

Details Quantum criticality of a Bose gas in an optical lattice near the Mott transition Quantum criticality of a Bose gas in an optical lattice near the Mott transition

2011-07-07

arxiv.org/abs/1107.1314v2

Phys. Rev. A 85, 011602(R) (2012)

Physics

Condensed Matter

Quantum Gases

v1) 4 pages, 6 figures. v2) Significant rewriting (new title) with more emphasis on the quantum critical behavior near the Mot

Scientific paper

10.1103/PhysRevA.85.011602

We derive the equation of state of bosons in an optical lattice in the framework of the Bose-Hubbard model. Near the density-driven Mott transition, the expression of the pressure P({\mu},T) versus chemical potential and temperature is similar to that of a dilute Bose gas but with renormalized mass m^* and scattering length a^*. m^* is the mass of the elementary excitations at the quantum critical point governing the transition from the superfluid phase to the Mott insulating phase, while a^* is related to their effective interaction at low energy. We use a nonperturbative renormalization-group approach to compute these parameters as a function of the ratio t/U between hopping amplitude and on-site repulsion.

Affiliated with

Also associated with

No associations

Rating

Quantum criticality of a Bose gas in an optical lattice near the Mott transition 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 Quantum criticality of a Bose gas in an optical lattice near the Mott transition, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Quantum criticality of a Bose gas in an optical lattice near the Mott transition will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-416551