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

EMILIO NICOLAS NESSI; CARLOS ANÍBAL IUCCI

PHYSICAL REVIEW A - ATOMIC, MOLECULAR AND OPTICAL PHYSICS

AMER PHYSICAL SOC

Lugar: New York; Año: 2011 vol. 84 p. 63614 - 63622

1050-2947

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.