Kinetics of Partially Coherent Polaritons in Scmiconductors. Schwinger‐Dyson Equations | Zendy

Beloussov I. V. | Zendy; Shvera Yu. M. | Zendy

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Kinetics of Partially Coherent Polaritons in Scmiconductors. Schwinger‐Dyson Equations

Author(s) -

Beloussov I. V.,

Shvera Yu. M.

Publication year - 1990

Publication title -

physica status solidi (b)

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.51

H-Index - 109

eISSN - 1521-3951

pISSN - 0370-1972

DOI - 10.1002/pssb.2221590110

Subject(s) - polariton , legendre transformation , physics , legendre polynomials , amplitude , perturbation theory (quantum mechanics) , excited state , perturbation (astronomy) , quantum , quantum mechanics , quantum electrodynamics , mathematical physics , condensed matter physics , thermodynamics

A derivation of the equations is given describing kinetic and dynamic properties of a high density polariton system excited in direct‐gap semiconductors by an external laser field. Keldysh diagram technique for non‐equilibrium processes formulated in terms of functionals is used. Using functional Legendre transformation the Dyson equations are obtained for normal and abnormal connected Keldysh‐Green's functions, which describe quantum fluctuations in the system, as well as for a coherent amplitude of the polariton field. The vertices in the Dyson equations are calculated using perturbation theory.

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