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Phase ordering kinetics of a nonequilibrium exciton-polariton condensate

Kulczykowski, Michał and Matuszewski, Michał (2017) Phase ordering kinetics of a nonequilibrium exciton-polariton condensate. Physical Review B, 95 (7). Art. No. 075306. ISSN 2469-9950.

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We investigate the process of coarsening via annihilation of vortex-antivortex pairs, following the quench to the condensate phase in a nonresonantly pumped polariton system. We find that the late-time dynamics is an example of universal phase-ordering kinetics, characterized by scaling of correlation functions in time. Depending on the parameters of the system, the evolution of the characteristic length scale L(t) can be the same as for the two-dimensional XY model, described by a power law with the dynamical exponent z≈2 and a logarithmic correction, or z≈1 which agrees with previous studies of conservative superfluids.

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Additional Information:© 2017 American Physical Society. Received 23 September 2015; revised manuscript received 22 April 2016; published 13 February 2017. We thank Alejandro Zamora, Marzena Szymańska, and Nikolaos Proukakis for stimulating and valuable discussions. We acknowledge support from National Science Center, Poland Grants No. DEC-2011/01/D/ST3/00482 and No. 2015/17/B/ST3/02273.
Group:Space Astrophysics Laboratory
Funding AgencyGrant Number
National Science Centre (Poland)DEC-2011/01/D/ST3/00482
National Science Centre (Poland)2015/17/B/ST3/02273
Issue or Number:7
Record Number:CaltechAUTHORS:20170406-101811209
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:75796
Deposited By: Deborah Miles
Deposited On:06 Apr 2017 19:35
Last Modified:03 Oct 2019 16:54

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