ONE-DIMENSIONAL BOSON WITH A PERIODIC ARRAY OF LOCAL POTENTIALS

Authors
ZHANG YM SHI YL CHEN H
Citation
Ym. Zhang et al., ONE-DIMENSIONAL BOSON WITH A PERIODIC ARRAY OF LOCAL POTENTIALS, Physical review. B, Condensed matter, 57(16), 1998, pp. 9561-9566
Citations number
18
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physical review. B, Condensed matter → ACNP
ISSN journal
01631829
Volume
57
Issue
16
Year of publication
1998
Pages
9561 - 9566
Database
ISI
SICI code
0163-1829(1998)57:16<9561:OBWAPA>2.0.ZU;2-P
Abstract
A one-dimensional boson model with a periodic array of local potential cos beta phi(nR) is studied by variational procedures on the basis of a trial ground state in the form of a Gaussian wave functional. The r enormalized local mass is calculated which exhibits two limiting behav iors: the correlation length is much smaller or larger than the spacin g between the potentials. The crossover between them is smooth. Possib le applications to the Kondo lattice model are also discussed. [S0163- 1829(98)03616-9].