Title
Negative drag in nonequilibrium polariton quantum fluids Negative drag in nonequilibrium polariton quantum fluids
Author
Faculty/Department
Faculty of Sciences. Physics
Publication type
article
Publication
Lancaster, Pa ,
Subject
Physics
Source (journal)
Physical review : B : condensed matter and materials physics. - Lancaster, Pa, 1998 - 2015
Volume/pages
89(2014) :8 , p. 1-6
ISSN
1098-0121
1550-235X
1098-0121
Article Reference
085303
Carrier
E-only publicatie
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
The possibility of a negative drag force on a defect in nonequilibrium polariton quantum fluids is presented. We relate this phenomenon to the selective parametric amplification of the waves scattered by the defect. This leads to the prediction that mobile defects acquire a nonzero velocity with respect to the polariton nonequilibrium fluid. We derive a direct relation between the drag force and the momentum distribution of the fluid, which allows for the experimental verification of our predictions.
Full text (open access)
https://repository.uantwerpen.be/docman/irua/b7ab50/7207.pdf
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