Correlations in an expanding gas of hard-core bosons

Details Correlations in an expanding gas of hard-core bosons Correlations in an expanding gas of hard-core bosons

2007-09-14

arxiv.org/abs/0709.2374v2

Phys. Rev. A 77, 041604(R) (2008)

Physics

Condensed Matter

Statistical Mechanics

Scientific paper

10.1103/PhysRevA.77.041604

We consider a longitudinal expansion of a one-dimensional gas of hard-core bosons suddenly released from a trap. We show that the broken translational invariance in the initial state of the system is encoded in correlations between the bosonic occupation numbers in the momentum space. The correlations are protected by the integrability and exhibit no relaxation during the expansion.

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