Macroscopic Quantum Tunneling and Entangled States in Bose-Einstein Condensates
ORAL
Abstract
We use a multi-band Hubbard model to study beyond-mean-field effects in macroscopic quantum tunneling of excited states in Bose-Einstein condensates. Our goal is to determine straightforward observables such as the oscillation frequency of kink-like structures between two wells or the propagation speed of such structures on a lattice. As a preliminary step, we present some surprising new results for entangled states of N bosons in two wells.
*Partial support by the National Science Foundation is very much appreciated.
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