--- res: bibo_abstract: - 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.@eng bibo_authorlist: - foaf_Person: foaf_givenName: Robert foaf_name: Robert Seiringer foaf_surname: Seiringer foaf_workInfoHomepage: http://www.librecat.org/personId=4AFD0470-F248-11E8-B48F-1D18A9856A87 orcid: 0000-0002-6781-0521 bibo_doi: 10.1007/s00220-011-1261-6 bibo_issue: '2' bibo_volume: 306 dct_date: 2011^xs_gYear dct_publisher: Springer@ dct_title: The excitation spectrum for weakly interacting Bosons@ ...