期刊
SCIENTIFIC REPORTS
卷 5, 期 -, 页码 -出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/srep09820
关键词
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资金
- Austrian FWF
- FFG project PLATON
- Doctoral Programme CoQuS [W1210]
- EU [ERC-ADG-320975]
- FWF [P22590-N16]
- SIQS
- Austrian Science Fund (FWF) [W1210] Funding Source: Austrian Science Fund (FWF)
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.
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