Beliaev Damping in Bose Gas
Abstract According to the Bogoliubov theory the low energy behaviour of the Bose gas at zero temperature can be described by non-interacting bosonic quasiparticles called phonons. In this work the damping rate of phonons at low momenta, the so-called Beliaev damping, is explained and computed with simple arguments involving the Fermi Golden Rule and Bogoliubov’s quasiparticles.
Authors
- Ben Li (ORCID: https://orcid.org/0000-0002-1369-887X)
- Jan Dereziński (ORCID: https://orcid.org/0000-0002-6268-1935)
- Marcin Napiórkowski (ORCID: https://orcid.org/0000-0003-4429-8999)
Institutions
- University of Warsaw (PL)
Publication Details
- Journal
- Journal of Statistical Physics
- Published
- 2024-08-30
- DOI
- https://doi.org/10.1007/s10955-024-03328-2
- Primary Topic
- Cold Atom Physics and Bose-Einstein Condensates
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- Deutsche Forschungsgemeinschaft
- Narodowe Centrum Nauki