Wave pattern induced by a localized obstacle in the flow of a one-dimensional polariton condensate

Motivated by recent experiments on generation of wave patterns by a polariton condensate incident on a localized obstacle, we study the characteristics of such flows under the condition that irreversible processes play a crucial role in the system. The dynamics of a nonresonantly pumped polariton co...

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Bibliographic Details
Published in:Physical review. B, Condensed matter and materials physics Condensed matter and materials physics, 2012-10, Vol.86 (16), Article 165304
Main Authors: Larré, P.-É., Pavloff, N., Kamchatnov, A. M.
Format: Article
Language:English
Subjects:
Accounting
Condensates
Condensed matter
Dynamics
Mathematical models
Obstacles
Polaritons
Wave resistance
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Summary:Motivated by recent experiments on generation of wave patterns by a polariton condensate incident on a localized obstacle, we study the characteristics of such flows under the condition that irreversible processes play a crucial role in the system. The dynamics of a nonresonantly pumped polariton condensate in a quasi-one-dimensional quantum wire is modeled by a Gross-Pitaevskii equation with additional phenomenological terms accounting for the dissipation and pumping processes. The response of the condensate flow to an external potential describing a localized obstacle is considered in the weak-perturbation limit and also in the nonlinear regime. The transition from a viscous drag to a regime of wave resistance is identified and studied in detail.
ISSN:1098-0121
1550-235X
DOI:10.1103/PhysRevB.86.165304