Self-localization of magnons and magnetoroton in a binary Bose-Einstein condensate
Autor: | Andreev, S. V., Utesov, O. I. |
---|---|
Rok vydání: | 2018 |
Předmět: | |
Zdroj: | Phys. Rev. A 101, 013621 (2020) |
Druh dokumentu: | Working Paper |
DOI: | 10.1103/PhysRevA.101.013621 |
Popis: | We consider a two-component Bose-condensed mixture characterized by positive s-wave scattering lengths. We assume equal densities and intra-species interactions. By doing the Bogoliubov transformation of an effective Hamiltonian we obtain the lower energy magnon dispersion incorporating the superfluid entrainment between the components. We argue that p-wave pairing of distinct bosons should be accompanied by self-localization of magnons and formation of a magnetoroton. We demonstrate the effect on a model system of particles interacting via step potentials. Comment: 5 pages, 1 figure |
Databáze: | arXiv |
Externí odkaz: |