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Dynamical Critical Exponents in Driven-Dissipative Quantum Systems

  Articoli su Riviste JCR/ISI  (anno 2018)

Autori:  Comaron P., Dagvadorj G., Zamora A., Carusotto I., Proukakis N. P., Szymanska M

Affiliazione Autori:  [Comaron, P.; Proukakis, N. P.] Newcastle Univ, Sch Math Stat & Phys, Joint Quantum Ctr JQC Durham Newcastle, Newcastle Upon Tyne NE1 7RU, Tyne & Wear, England. [Dagvadorj, G.; Zamora, A.; Szymanska, M. H.] UCL, Dept Phys & Astron, Gower St, London WC1E 6BT, England. [Dagvadorj, G.] Univ Warwick, Dept Phys, Coventry CV4 7AL, W Midlands, England. [Carusotto, I.] INO CNR BEC Ctr, I-38123 Povo, Italy and Univ Trento, Dipartimento Fis, I-38123 Povo, Italy.

Riassunto:   We study the phase ordering of parametrically and incoherently driven microcavity polaritons after an infinitely rapid quench across the critical region. We confirm that the system, despite its driven-dissipative nature, satisfies the dynamical scaling hypothesis for both driving schemes by exhibiting self-similar patterns for the two-point correlator at late times of the phase ordering. We show that polaritons are characterized by the dynamical critical exponent z approximate to 2 with topological defects playing a fundamental role in the dynamics, giving logarithmic corrections both to the power-law decay of the number of vortices and to the associated growth of the characteristic length scale.

Rivista/Giornale:  PHYSICAL REVIEW LETTERS
Volume n.:  121 (9)      Pagine da: 095302-1  a: 095302-6
DOI: 10.1103/PhysRevLett.121.095302

   *Citazioni: 1
data tratti da "WEB OF SCIENCE" (marchio registrato di Thomson Reuters) ed aggiornati a:  19/05/2019

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