Complete Bose-Einstein condensation in the Gross-Pitaevskii regime

Abstract

We consider a gas of $N$ bosons in a box with volume one interacting through a two-body potential with scattering length of order $N^{-1}$ (Gross-Pitaevskii limit). Assuming the (unscaled) potential to be sufficiently small, we show that the ground state of the system and all states with relatively small excitation energy exhibit complete Bose-Einstein condensation, with a uniform (i.e. $N$ independent) bound on the number of excitations.

55 pages. arXiv admin note: text overlap with arXiv:1702.05625

References in corpus (1)

• Rigorous Derivation of the Gross-Pitaevskii Equation

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