Slave Boson Formulation for Interacting Boson Systems and the Superfluid-Insulator Transition
Abstract
Description
A new formulation for the study of interacting bosons on a lattice is introduced. This approach is used to give analytical expressions for the Mott insulating lobes in the phase diagram and to calculate the density-density correlation function. It is also shown that, at mean-field level, this newly introduced slave boson theory coincides with mean-field theory of a suitably introduced order parameter.
Revtex, 12 pages, including 3 figures, available upon request, U. Karlsruhe Preprint
Revtex, 12 pages, including 3 figures, available upon request, U. Karlsruhe Preprint