Local spectral density of an interacting one-dimensional Bose gas with an impurity

Abstract

A weakly interacting Bose gas with a single static impurity is studied in one dimension. The local spectral density is evaluated and an analytic expression valid for positive strengths of the impurity coupling to the bosons, at all distances and at all frequencies is obtained using the Bogoliubov-de Gennes approximation.

14 pages, 4 figures

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Cited by in corpus (3)

• Dissipative dynamics of a heavy impurity in a Bose gas in the strong coupling regime
• Thermometry with a Dissipative Heavy Impurity
• The density of a one-dimensional Bose gas far from an impurity