Bose Glass in Large N Commensurate Dirty Boson Model

Details Bose Glass in Large N Commensurate Dirty Boson Model Bose Glass in Large N Commensurate Dirty Boson Model

1998-11-09

arxiv.org/abs/cond-mat/9811121v1

Phys. Rev. B 64, 024517 (2001)

Physics

Condensed Matter

Statistical Mechanics

16 pages, 7 figures

Scientific paper

10.1103/PhysRevB.64.024517

The large N commensurate dirty boson model, in both the weakly and strongly commensurate cases, is considered via a perturbative renormalization group treatment. In the weakly commensurate case, there exists a fixed line under RG flow, with varying amounts of disorder along the line. Including 1/N corrections causes the system to flow to strong disorder, indicating that the model does not have a phase transition perturbatively connected to the Mott Insulator-Superfluid (MI-SF) transition. I discuss the qualitative effects of instantons on the low energy density of excitations. In the strongly commensurate case, a fixed point found previously is considered and results are obtained for higher moments of the correlation functions. To lowest order, correlation functions have a log-normal distribution. Finally, I prove two interesting theorems for large N vector models with disorder, relevant to the problem of replica symmetry breaking and frustration in such systems.

Affiliated with

Also associated with

No associations

Rating

Bose Glass in Large N Commensurate Dirty Boson Model 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 Bose Glass in Large N Commensurate Dirty Boson Model, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Bose Glass in Large N Commensurate Dirty Boson Model will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-711560