Stability of low-dimensional multicomponent Bose gases
Alexei Kolezhuk
TL;DR
This paper investigates how interactions in low-dimensional dilute Bose mixtures are significantly renormalized, altering stability conditions from mean-field predictions, with specific estimates for Bose-Hubbard and Rb-K mixtures.
Contribution
It provides a detailed analysis of interaction renormalization effects on the stability of low-dimensional Bose mixtures, extending beyond mean-field theory.
Findings
Interactions are strongly renormalized in low dimensions.
Stability conditions differ from mean-field predictions.
Estimates provided for specific Bose-Hubbard and Rb-K systems.
Abstract
I show that in low dimensions the interactions in dilute Bose mixtures are strongly renormalized, which leads to a considerable change of stability conditions compared to the mean-field results valid in the high-density regime. Estimates are given for the two-component Bose-Hubbard model and for the Rb(87)-K(41) mixture.
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