Photon kinetics in plasmas
We present a kinetic theory of radiative processes in many-component plasmas with relativistic electrons and nonrelativistic heavy particles. Using the non-equilibrium Green's function technique in many-particle QED, we show that the transverse field correlation functions can be naturally decom...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Institute for Condensed Matter Physics
2009-01-01
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| Series: | Condensed Matter Physics |
| Subjects: | |
| Online Access: | http://dx.doi.org/10.5488/CMP.12.4.617 |
| _version_ | 1828356280416206848 |
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| author | V.G. Morozov G. Röpke |
| author_facet | V.G. Morozov G. Röpke |
| author_sort | V.G. Morozov |
| collection | DOAJ |
| description | We present a kinetic theory of radiative processes in many-component plasmas with relativistic electrons and nonrelativistic heavy particles. Using the non-equilibrium Green's function technique in many-particle QED, we show that the transverse field correlation functions can be naturally decomposed into sharply peaked (non-Lorentzian) parts that describe resonant (propagating) photons and off-shell parts corresponding to virtual photons in the medium. Analogous decompositions are obtained for the longitudinal field correlation functions and the correlation functions of relativistic electrons. We derive a kinetic equation for the resonant photons with a finite spectral width and show that the off-shell parts of the particle and field correlation functions are essential to calculate the local radiating power in plasmas and recover the results of vacuum QED. The plasma effects on radiative processes are discussed. |
| first_indexed | 2024-04-14T02:56:30Z |
| format | Article |
| id | doaj.art-083d1406dd004b1f9b99cc6fa6483776 |
| institution | Directory Open Access Journal |
| issn | 1607-324X |
| language | English |
| last_indexed | 2024-04-14T02:56:30Z |
| publishDate | 2009-01-01 |
| publisher | Institute for Condensed Matter Physics |
| record_format | Article |
| series | Condensed Matter Physics |
| spelling | doaj.art-083d1406dd004b1f9b99cc6fa64837762022-12-22T02:16:05ZengInstitute for Condensed Matter PhysicsCondensed Matter Physics1607-324X2009-01-01124617632Photon kinetics in plasmasV.G. MorozovG. RöpkeWe present a kinetic theory of radiative processes in many-component plasmas with relativistic electrons and nonrelativistic heavy particles. Using the non-equilibrium Green's function technique in many-particle QED, we show that the transverse field correlation functions can be naturally decomposed into sharply peaked (non-Lorentzian) parts that describe resonant (propagating) photons and off-shell parts corresponding to virtual photons in the medium. Analogous decompositions are obtained for the longitudinal field correlation functions and the correlation functions of relativistic electrons. We derive a kinetic equation for the resonant photons with a finite spectral width and show that the off-shell parts of the particle and field correlation functions are essential to calculate the local radiating power in plasmas and recover the results of vacuum QED. The plasma effects on radiative processes are discussed.http://dx.doi.org/10.5488/CMP.12.4.617many-particle QEDnonequilibrium Green's functionsrelativistic plasmas |
| spellingShingle | V.G. Morozov G. Röpke Photon kinetics in plasmas Condensed Matter Physics many-particle QED nonequilibrium Green's functions relativistic plasmas |
| title | Photon kinetics in plasmas |
| title_full | Photon kinetics in plasmas |
| title_fullStr | Photon kinetics in plasmas |
| title_full_unstemmed | Photon kinetics in plasmas |
| title_short | Photon kinetics in plasmas |
| title_sort | photon kinetics in plasmas |
| topic | many-particle QED nonequilibrium Green's functions relativistic plasmas |
| url | http://dx.doi.org/10.5488/CMP.12.4.617 |
| work_keys_str_mv | AT vgmorozov photonkineticsinplasmas AT gropke photonkineticsinplasmas |