| Issue |
EPL
Volume 103, Number 6, September 2013
|
|
|---|---|---|
| Article Number | 60001 | |
| Number of page(s) | 6 | |
| Section | General | |
| DOI | https://doi.org/10.1209/0295-5075/103/60001 | |
| Published online | 02 October 2013 | |
Hawking radiation in a two-component Bose-Einstein condensate
Univ. Paris Sud, CNRS, L.P.T.M.S., UMR8626 - 91405 Orsay, France, EU
Received: 10 July 2013
Accepted: 10 September 2013
We consider a simple realization of an event horizon in the flow of a one-dimensional two-component Bose-Einstein condensate. Such a condensate has two types of quasiparticles; In the system we study, one corresponds to density fluctuations and the other to polarization fluctuations. We treat the case in which a horizon occurs only for one type of quasiparticles (the polarization ones). We study the one- and two-body signal associated to the analog of spontaneous Hawking radiation and demonstrate by explicit computation that it consists only in the emission of polarization waves. We discuss the experimental consequences of the present results in the domain of atomic Bose-Einstein condensates and also for the physics of exciton-polaritons in semiconductor microcavities.
PACS: 04.62.+v – Quantum fields in curved spacetime / 03.75.Mn – Multicomponent condensates; spinor condensates / 04.70.Dy – Quantum aspects of black holes, evaporation, thermodynamics
© EPLA, 2013
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.