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arXiv · 1211.1822

Unearthing wave-function renormalization effects in the time evolution of a Bose-Einstein condensate

Paolo Facchi·Saverio Pascazio·Francesco V. Pepe·Ennio Arimondo·Donatella Ciampini·Oliver Morsch
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Abstract

We study the time evolution of a Bose-Einstein condensate in an accelerated optical lattice. When the condensate has a narrow quasimomentum distribution and the optical lattice is shallow, the survival probability in the ground band exhibits a steplike structure. In this regime we establish a connection between the wave-function renormalization parameter $Z$ and the phenomenon of resonantly enhanced tunneling.

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Paolo Facchi, Saverio Pascazio, Francesco V. Pepe, Ennio Arimondo, Donatella Ciampini, Oliver Morsch. 2012-11-08. Unearthing wave-function renormalization effects in the time evolution of a Bose-Einstein condensate. https://doi.org/10.1088/0031-8949%2F2013%2Ft153%2F014024

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