Winding up by a quench: Insulator to superfluid phase transition in a ring of BECs

Details Winding up by a quench: Insulator to superfluid phase transition in a ring of BECs Winding up by a quench: Insulator to superfluid phase transition in a ring of BECs

2008-05-07

arxiv.org/abs/0805.1025v2

Phys. Rev. Lett. 101, 115701 (2008)

Physics

Condensed Matter

Statistical Mechanics

minor typo corrections; version to appear in Phys.Rev.Lett

Scientific paper

We study phase transition from the Mott insulator to superfluid in a periodic
optical lattice. Kibble-Zurek mechanism predicts buildup of winding number
through random walk of BEC phases, with the step size scaling as a the third
root of transition rate. We confirm this and demonstrate that this scaling
accounts for the net winding number after the transition.

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