Excitation spectrum of dilute trapped Bose gases

author: Phan Thanh Nam, Ludwig-Maximilians Universität
published: July 6, 2021,   recorded: July 2021,   views: 0
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We will discuss the low-lying eigenvalues of trapped Bose gases in the Gross-Pitaevskii regime. In particular, we will derive a nonlinear correction to the Bogoliubov approximation, thus capturing precisely the two-body scattering process of the particles. This extends a result of Boccato, Brennecke, Cenatiempo and Schlein on the homogeneous Bose gas. The talk is based on joint work with Arnaud Triay.

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