Journal
OPTICS EXPRESS
Volume 12, Issue 1, Pages 42-54Publisher
OPTICAL SOC AMER
DOI: 10.1364/OPEX.12.000042
Keywords
-
Categories
Ask authors/readers for more resources
We develop a variational wave function for the ground state of a one-dimensional bosonic lattice gas. The variational theory is initally developed for the quantum rotor model and later on extended to the Bose-Hubbard model. This theory is compared with quasi-exact numerical results obtained by Density Matrix Renormalization Group (DMRG) studies and with results from other analytical approximations. Our approach accurately gives local properties for strong and weak interactions, and it also describes the crossover from the superfluid phase to the Mott-insulator phase. (C) 2004 Optical Society of America.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available