D. Muth, B. Schmidt, and M. Fleischhauer
University of Kaiserslautern
We theoretically analyze the dynamics of a one-dimensional Bose gas with strong short-range interactions after an interaction quench. In the attractive regime numerical simualtions of the many body system  reproduce the formation of the meta-stable super Tonks-Giradeau gas recently observed in cold atom experiments . A quench from the Tonks to the super-Tonks regime leads to a very small coherent admixture of tightly bound-pair states, leading to an oscillatory behavior of the two-particle correlation function. In the repulsive regime we investigate a setup where the numerical simulations show, despite integrability of the model, local thermalization on a short timescale . The resulting final state is consistent with the results from thermodynamic Bethe ansatz.
 D. Muth, M. Fleischhauer, Phys. Rev. Lett. 2010 arxiv:1006.5312
 E. Haller et al. Science 325, 1224 (2009)
 D. Muth, B. Schmidt, M. Fleischhauer, New J. Phys. 12, 083065 (2010)
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