Scaling of noise correlations in one-dimensional-lattice–hard-core-boson systems

TitleScaling of noise correlations in one-dimensional-lattice–hard-core-boson systems
Publication TypeJournal Article
Year of Publication2011
AuthorsHe, K., and Rigol M.
JournalPhysical Review A
Volume83
Pagination023611
Abstract

Noise correlations are studied for systems of hard-core bosons in one-dimensional lattices. We use an exact numerical approach based on the Bose-Fermi mapping and properties of Slater determinants. We focus on the scaling of the noise correlations with system size in superfluid and insulating phases, which are generated in the homogeneous lattice, with period-two superlattices and with uniformly distributed random diagonal disorder. For the superfluid phases, the leading contribution is shown to exhibit a density-independent scaling proportional to the system size, while the first subleading term exhibits a density-dependent power-law exponent.

URLhttp://link.aps.org/doi/10.1103/PhysRevA.83.023611
DOI10.1103/PhysRevA.83.023611
arXiv.org

http://arxiv.org/abs/1011.4259