Matches in SemOpenAlex for { <https://semopenalex.org/work/W2004920673> ?p ?o ?g. }
- W2004920673 abstract "Electrons, holes, and photons in semiconductors are interacting fermions and bosons. In this system, a variety of ordered coherent phases can be formed through the spontaneous phase symmetry breaking because of their interactions. The Bose-Einstein condensation (BEC) of excitons and polaritons is one of such coherent phases, which can potentially cross over into the Bardeen-Cooper-Schrieffer (BCS) type ordered phase at high densities under quasiequilibrium conditions, known as the BCS-BEC crossover. In contrast, one can find the semiconductor laser, superfluorescence (SF), and superradiance as relevant phenomena under nonequilibrium conditions. In this paper, we present a comprehensive generating functional theory that yields nonequilibrium Green's functions in a rigorous way. The theory gives us a starting point to discuss these phases in a unified view with a diagrammatic technique. Comprehensible time-dependent equations are derived within the Hartree-Fock approximation, which generalize the Maxwell-semiconductor-Bloch equations under the relaxation time approximation. With the help of this formalism, we clarify the relationship among these cooperative phenomena and we show theoretically that the Fermi-edge SF is directly connected to the e-h BCS phase. We also discuss the emission spectra as well as the gain-absorption spectra." @default.
- W2004920673 created "2016-06-24" @default.
- W2004920673 creator A5026184328 @default.
- W2004920673 creator A5055254286 @default.
- W2004920673 creator A5071256887 @default.
- W2004920673 creator A5074643506 @default.
- W2004920673 creator A5079117664 @default.
- W2004920673 date "2015-03-16" @default.
- W2004920673 modified "2023-10-03" @default.
- W2004920673 title "Generating functional approach for spontaneous coherence in semiconductor electron-hole-photon systems" @default.
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