Scientific Results

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

Year: 2013

Authors: Facchi P., Pascazio S., Pepe F.V., Arimondo E., Ciampini D., Morsch O.

Autors Affiliation: Dipartimento di Fisica and MECENAS, Università di Bari, I-70126 Bari, Italy INFN, Sezione di Bari, I-70126 Bari, Italy CNISM-Pisa, Dipartimento di Fisica, Università di Pisa, Lgo Pontecorvo 3, I-56127 Pisa, Italy INO-CNR, Dipartimento di Fisica, Università di Pisa, Lgo Pontecorvo 3, I-56127 Pisa, Italy

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

Journal/Review: PHYSICA SCRIPTA

Volume: T153      Pages from: 014024  to: 014024

More Information: DOI: 10.1088/0031-8949/2013/T153/014024
KeyWords: GAMOW VECTORS; QUANTUM; DECAY; SYSTEMS; STATES
DOI: 10.1088/0031-8949/2013/T153/014024

Connecting to view paper tab on IsiWeb: Click here

gdpr-image
This site uses cookies. If you decide to continue browsing we consider that you accept their use. For more information about cookies and how to delete them please read our Info Policy on cookies use.
Read more