Batchelor, Murray; Bortz, Michael; Guan, Xi-Wen; Oelkers, Norman
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...[Show more]
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