Journal
NEW JOURNAL OF PHYSICS
Volume 15, Issue -, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1367-2630/15/7/075011
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Funding
- Austrian Science Fund (FWF) through the Wittgenstein Prize
- EU through the integrating project AQUTE
- FWF Doctoral Programme CoQuS [W1210]
- FWF through the Lise Meitner Programme [M 1423]
- FWF [P22590-N16]
- EU [220586]
- NSF [DMR-07-05472]
- Division Of Physics
- Direct For Mathematical & Physical Scien [1125846] Funding Source: National Science Foundation
- Austrian Science Fund (FWF) [P22590, W1210] Funding Source: Austrian Science Fund (FWF)
- Austrian Science Fund (FWF) [Z 118, P 22590] Funding Source: researchfish
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We detail the experimental observation of the non-equilibrium many-body phenomenon prethermalization. We study the dynamics of a rapidly and coherently split one-dimensional Bose gas. An analysis based on the use of full quantum mechanical probability distributions of matter wave interference contrast reveals that the system evolves toward a quasi-steady state. This state, which can be characterized by an effective temperature, is not the final thermal equilibrium state. We compare the evolution of the system to an integrable Tomonaga-Luttinger liquid model, and show that the system dephases to a prethermalized state rather than undergoing thermalization toward a final thermal equilibrium state.
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