Physics – Condensed Matter
Scientific paper
1995-08-23
Physics
Condensed Matter
33 pages typeset in ReVTeX. Eight encapsulated postscript figures included. The figures are compressed with uufiles
Scientific paper
10.1103/PhysRevB.53.2691
A strong-coupling expansion for the phase boundary of the (incompressible) Mott insulator is presented for the bose Hubbard model. Both the pure case and the disordered case are examined. Extrapolations of the series expansions provide results that are as accurate as the Monte Carlo simulations and agree with the exact solutions. The shape difference between Kosterlitz-Thouless critical behavior in one-dimension and power-law singularities in higher dimensions arises naturally in this strong-coupling expansion. Bounded disorder distributions produce a ``first-order'' kink to the Mott phase boundary in the thermodynamic limit because of the presence of Lifshitz's rare regions.
Freericks James K.
Monien Hartmut
No associations
LandOfFree
Strong-coupling expansions for the pure and disordered bose Hubbard 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 Strong-coupling expansions for the pure and disordered bose Hubbard model, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Strong-coupling expansions for the pure and disordered bose Hubbard model will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-710166