Asymptotic expansion of low-energy excitations for weakly interacting bosons

Author:

Boßmann LeaORCID,Petrat SörenORCID,Seiringer RobertORCID

Abstract

AbstractWe consider a system ofNbosons in the mean-field scaling regime for a class of interactions including the repulsive Coulomb potential. We derive an asymptotic expansion of the low-energy eigenstates and the corresponding energies, which provides corrections to Bogoliubov theory to any order in$1/N$.

Publisher

Cambridge University Press (CUP)

Subject

Computational Mathematics,Discrete Mathematics and Combinatorics,Geometry and Topology,Mathematical Physics,Statistics and Probability,Algebra and Number Theory,Theoretical Computer Science,Analysis

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