M T Batchelor et al J. Stat. Mech. (2005) L10001 doi:10.1088/1742-5468/2005/10/L10001
Evidence for the super Tonks–Girardeau gas
FREE ARTICLEM T Batchelor1, M Bortz, X W Guan and N Oelkers
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We provide evidence in support of a recent proposal by Astrakharchik et al for the existence of a super Tonks–Girardeau gas-like state in the attractive interaction regime of quasi-one-dimensional Bose gases. We show that the super Tonks–Girardeau gas-like state corresponds to a highly excited Bethe state in the integrable interacting Bose gas for which the bosons acquire hard-core behaviour. The gas-like state properties vary smoothly throughout a wide range from strong repulsion to strong attraction. There is an additional stable gas-like phase in this regime in which the bosons form two-body bound states behaving like hard-core bosons.
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E-print Number: cond-mat/0508009
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- PACS
- MSC
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82B20 Lattice systems (Ising, dimer, Potts, etc.) and systems on graphs
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- Dates
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Issue 10 (October 2005)
Received 2 August 2005, accepted for publication 23 September 2005
Published 4 October 2005
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Evidence for the super Tonks–Girardeau gas
M T Batchelor et al J. Stat. Mech. (2005) L10001
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