Non-equilibrium scale invariance and shortcuts to adiabaticity in a one-dimensional Bose gas.

Abstract:

:We present experimental evidence for scale invariant behaviour of the excitation spectrum in phase-fluctuating quasi-1d Bose gases after a rapid change of the external trapping potential. Probing density correlations in free expansion, we find that the temperature of an initial thermal state scales with the spatial extension of the cloud as predicted by a model based on adiabatic rescaling of initial eigenmodes with conserved quasiparticle occupation numbers. Based on this result, we demonstrate that shortcuts to adiabaticity for the rapid expansion or compression of the gas do not induce additional heating.

journal_name

Sci Rep

journal_title

Scientific reports

authors

Rohringer W,Fischer D,Steiner F,Mazets IE,Schmiedmayer J,Trupke M

doi

10.1038/srep09820

subject

Has Abstract

pub_date

2015-04-13 00:00:00

pages

9820

issn

2045-2322

pii

srep09820

journal_volume

5

pub_type

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