[Aspuru-Guzik Group List] ITAMP lunch seminar - Ivar Zapata, Universidad Complutense de Madrid (Thu, 03/17)

*ITAMP Topical Lunch Discussion* *Speaker:* Ivar Zapata (Universidad Complutense de Madrid) *Title:* Connection of separate Bose-Einstein condensates via Josephson effect *Abstract: *This work is about the dynamics of the relative phase following a Josephson link between two independently formed Bose-Einstein condensates. The effect of Bogoliubov excitations on the coherence properties of the relative phase is evaluated in a semiclassical regime, in which the system undergoes Bloch oscillations around the initial particle number. This allows a description of decoherence in terms of energy relaxation. The method used is explained so that it could be extended to other related fields, specially polaron physics. Date: Thursday, March 17th Time: 12:00-1:30 pm Pizza will be served. Location: B-106 @ Center for Astrophysics (60 Garden Street) Directions: after entering the lobby of the CfA, turn right to enter the hallway of the B building. In the hallway, turn right again, and B-106 is there. -- Dr. Igor Pikovski Institute for Theoretical Atomic, Molecular and Optical Physics (ITAMP) Harvard-Smithsonian Center for Astrophysics 60 Garden St, MS-14; Cambridge, MA 02138, USA Tel.: +1 (617) 496-7613 e-mail: igor.pikovski(a)cfa.harvard.edu www.cfa.harvard.edu/~igor.pikovski/