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Uspekhi Fizicheskikh Nauk, 2017, Volume 187, Number 11, Pages 1273–1279
DOI: https://doi.org/10.3367/UFNr.2017.10.038227 (Mi ufn6048) 		 
This article is cited in 33 scientific papers (total in 37 papers)

FROM THE ARCHIVE

Coherent states of excitons

L. V. Keldysh

Lebedev Physical Institute, Russian Academy of Sciences, Moscow
Full-text PDF (661 kB) Citations (37) English version article
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DOI: https://doi.org/10.3367/UFNr.2017.10.038227
URL: https://www.ufn.ru/ru/articles/2017/11/g
Abstract: The concept of a coherent exciton state is formulated. It is shown that for this state, a macroscopic wave function can be introduced such that it satisfies a nonlinear equation of the type familiar in the phenomenological theory of a superfluid liquid. The corresponding nondissipative flux is the flux of energy. For excitons interacting with an electromagnetic field, a coupled system of Maxwell equations and Ginzburg–Pitaev„skii-type equations (phenomenological theory of Bose liquid) is obtained.
Keywords: excitons, coherent state of excitons, macroscopic wave function, phenomenological theory of superfluid liquid, Bose-liquid equations, Ginzburg–Pitaevskii equations.
Received: July 12, 2017
Accepted: October 18, 2017
English version:
Physics–Uspekhi, 2017, Volume 60, Issue 11, Pages 1180–1186
DOI: https://doi.org/10.3367/UFNe.2017.10.038227
Bibliographic databases:
Document Type: Article
PACS: 03.75.Kk, 67.10.-j, 71.35.-y
Language: Russian
Citation: L. V. Keldysh, “Coherent states of excitons”, UFN, 187:11 (2017), 1273–1279; Phys. Usp., 60:11 (2017), 1180–1186
Citation in format AMSBIB
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