January 08 2015

12.-17.01.2015: Visit of Shmuel Fishman.

Shmuel Fishman (Technion, Haifa, Israel) visits us and will give a talk about "Collapses and revivals of matter waves" on Wednesday @9.00 in room E.04 in the Ctrl-Q seminar.

Quantum collapses and revivals are fascinating manifestations of coherence. Of particular interest in recent years are macroscopic quantum interference effects in Bose-Einstein condensates. We studied such effects for the two site Bose-Hubbard model, and found an analytic expression for the difference in the occupation of the two sites. The result is valid for large number of particles and weak inter-particle interactions. This expression predicts the time scales of the dynamics and enables one to evaluate the shape of the revival peaks in absence of dissipation. The work reported was done with Hagar Veksler.

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