Balanced gain and loss in Bose-Einstein condensates without PT symmetry
| Autor: | Daniel Haag, Holger Cartarius, Dennis Dast, Günter Wunner, Philipp Lunt |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Physics
Condensed Matter::Quantum Gases Quantum Physics media_common.quotation_subject FOS: Physical sciences 01 natural sciences Asymmetry Symmetry (physics) 010305 fluids & plasmas law.invention Nonlinear system law Quantum Gases (cond-mat.quant-gas) Quantum mechanics Quantum electrodynamics 0103 physical sciences 010306 general physics Ground state Condensed Matter - Quantum Gases Quantum Physics (quant-ph) Realization (systems) Bose–Einstein condensate media_common |
| DOI: | 10.48550/arxiv.1706.03489 |
| Popis: | Balanced gain and loss renders the mean-field description of Bose-Einstein condensates PT symmetric. However, any experimental realization has to deal with unbalancing in the gain and loss contributions breaking the PT symmetry. We will show that such an asymmetry does not necessarily lead to a system without a stable mean-field ground state. Indeed, by exploiting the nonlinear properties of the condensate, a small asymmetry can stabilize the system even further due to a self-regulation of the particle number. Comment: 7 pages, 6 figures |
| Databáze: | OpenAIRE |
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