Mobile impurities in integrable models

Andrew S. Campbell, Dimitri M. Gangardt

SciPost Phys. 3, 015 (2017) · published 22 August 2017

Abstract

We use a mobile impurity or depleton model to study elementary excitations in one-dimensional integrable systems. For Lieb-Liniger and bosonic Yang-Gaudin models we express two phenomenological parameters characterising renormalised interactions of mobile impurities with superfluid background: the number of depleted particles, $N$ and the superfluid phase drop $\pi J$ in terms of the corresponding Bethe Ansatz solution and demonstrate, in the leading order, the absence of two-phonon scattering resulting in vanishing rates of inelastic processes such as viscosity experienced by the mobile impurities

Cited by 4

Crossref Cited-by

Ontology / Topics

See full Ontology or Topics database.

Bethe Ansatz Integrability/integrable models Lieb-Liniger model Mobile impurities Viscosity Yang-Gaudin models

Authors / Affiliation: mappings to Contributors and Organizations

See all Organizations.