Stationary State After a Quench to the Lieb-Liniger from Rotating BECs

Bucciantini, Leda

doi:10.1007/s10955-016-1535-7

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Stationary State After a Quench to the Lieb-Liniger from Rotating BECs

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Bucciantini, Leda
Max Planck Institute for the Physics of Complex Systems, Max Planck Society;

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http://link.springer.com/article/10.1007/s10955-016-1535-7
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Citation

Bucciantini, L. (2016). Stationary State After a Quench to the Lieb-Liniger from Rotating BECs. JOURNAL OF STATISTICAL PHYSICS, 164(3), 621-644. doi:10.1007/s10955-016-1535-7.

Cite as: https://hdl.handle.net/11858/00-001M-0000-002B-1517-F

Abstract

We study long-time dynamics of a bosonic system after suddenly switching on repulsive delta-like interactions. As initial states, we consider two experimentally relevant configurations: a rotating BEC and two counter-propagating BECs with opposite momentum, both on a ring. In the first case, the rapidity distribution function for the stationary state is derived analytically and it is given by the distribution obtained for the same quench starting from a BEC, shifted by the momentum of each boson. In the second case, the rapidity distribution function is obtained numerically for generic values of repulsive interaction and initial momentum. The significant differences for the case of large versus small quenches are discussed.