Finite-temperature properties of one-dimensional hard-core bosons in a quasiperiodic optical lattice

Details Finite-temperature properties of one-dimensional hard-core bosons in a quasiperiodic optical lattice Finite-temperature properties of one-dimensional hard-core bosons in a quasiperiodic optical lattice

2011-11-09

arxiv.org/abs/1111.2201v2

Phys. Rev. A 84, 063614 (2011)

Physics

Condensed Matter

Quantum Gases

8 pages, 9 figures

Scientific paper

10.1103/PhysRevA.84.063614

We investigate the properties of impenetrable bosons confined in a one-dimensional lattice at finite temperature in the presence of an additional incommensurate periodic potential. Relying on the exact Fermi-Bose mapping, we study the effects of temperature on the one-particle density matrix and related quantities such as the momentum distribution function and the natural orbitals. We found evidence of a finite-temperature crossover related to the zero-temperature superfluid-to-Bose-glass transition that induces a delocalization of the lowest natural orbitals.

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