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The Excitation Spectrum for Weakly Interacting Bosons

Mathematical Physics & Probability

Speaker: Robert Seiringer, McGill University
Location: 1147 MSB
Start time: Wed, Feb 23 2011, 4:10PM

We investigate the low energy excitation spectrum of a Bose gas with weak, long range repulsive interactions. In particular, we prove that the Bogoliubov spectrum of elementary excitations with linear dispersion relation for small momentum becomes exact in the mean-field limit.