Density fluctuations of a hard-core Bose gas in a one-dimensional lattice

Abstract

For a hard-core Bose gas on a one-dimensional lattice we find characteristic oscillations in the density-density correlation function. Their wavelength diverges as the system undergoes a continuous transition from an incommensurate to a Mott insulating phase. The associated static structure factor vanishes as the Mott insulating phase is approached. The qualitative picture is unchanged when a weak confinig potential is applied to the system.

4 pages, 4 figures, submitted to Phys. Rev. Lett

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Cited by in corpus (5)

• Ultracold bosons with short-range interaction in regular optical lattices
• Interacting bosons in an optical lattice
• Interacting bosons in an optical lattice: Bose-Einstein condensates and Mott insulator
• Density-density correlation and interference mechanism for two initially independent Bose-Einstein condensates
• Short note on the excitonic Mott phase