Response Function Theory for Many-Body Systems Away from Equilibrium: Conditions of Ultrafast-Time and Ultrasmall-Space Experimental Resolution
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| Format: | Artículo científico |
| Language: | en |
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Sociedade Brasileira de Física
2015
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| _version_ | 1876430809241485312 |
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| author | Clóves G. Rodrigues |
| author_facet | Clóves G. Rodrigues |
| contents | Response Function Theory for Many-Body Systems Away from Equilibrium: Conditions of Ultrafast-Time and Ultrasmall-Space Experimental Resolution Clóves G. Rodrigues Áurea R. Vasconcellos J. Galvão Ramos Roberto Luzzi Física, Astronomía y Matemáticas Semiconductors Response function Scattering theory Ultrafast processes A response function theory and scattering theory applicable to the study of physical properties of systems driven arbitrarily far removed from equilibrium, specialized for dealing with ultrafast processes, and in conditions of space resolution (including the nanometric scale) are presented. The derivation is done in the framework of a Gibbs-style nonequilibrium statistical ensemble formalism. The observable properties are shown to be connected with time- and space-dependent correlation functions out of equilibrium. A generalized fluctuation-dissipation theorem, which relates these correlation functions with generalized susceptibilities, is derived. The method of nonequilibriumthermodynamic Green functions, which proves useful for calculations, is also presented. Two illustrative applications of the formalism, which study optical responses in ultrafast laser spectroscopy and Raman scattering of electrons in III-N semiconductors (of “blue diodes”) driven away from equilibriumby electric fields of moderate to high intensities, are described. 2015 artículo científico 0103-9733 https://www.redalyc.org/articulo.oa?id=46433753021 en http://www.redalyc.org/revista.oa?id=464 Brazilian Journal of Physics application/pdf Sociedade Brasileira de Física Brazilian Journal of Physics (Brasil) Num.1 Vol.45 |
| format | Artículo científico |
| id | redalyc_46433753021 |
| institution | Redalyc |
| language | en |
| publishDate | 2015 |
| publisher | Sociedade Brasileira de Física |
| spellingShingle | Response Function Theory for Many-Body Systems Away from Equilibrium: Conditions of Ultrafast-Time and Ultrasmall-Space Experimental Resolution Clóves G. Rodrigues Física, Astronomía y Matemáticas Semiconductors Response function Scattering theory Ultrafast processes Response Function Theory for Many-Body Systems Away from Equilibrium: Conditions of Ultrafast-Time and Ultrasmall-Space Experimental Resolution Clóves G. Rodrigues Áurea R. Vasconcellos J. Galvão Ramos Roberto Luzzi Física, Astronomía y Matemáticas Semiconductors Response function Scattering theory Ultrafast processes A response function theory and scattering theory applicable to the study of physical properties of systems driven arbitrarily far removed from equilibrium, specialized for dealing with ultrafast processes, and in conditions of space resolution (including the nanometric scale) are presented. The derivation is done in the framework of a Gibbs-style nonequilibrium statistical ensemble formalism. The observable properties are shown to be connected with time- and space-dependent correlation functions out of equilibrium. A generalized fluctuation-dissipation theorem, which relates these correlation functions with generalized susceptibilities, is derived. The method of nonequilibriumthermodynamic Green functions, which proves useful for calculations, is also presented. Two illustrative applications of the formalism, which study optical responses in ultrafast laser spectroscopy and Raman scattering of electrons in III-N semiconductors (of “blue diodes”) driven away from equilibriumby electric fields of moderate to high intensities, are described. 2015 artículo científico 0103-9733 https://www.redalyc.org/articulo.oa?id=46433753021 en http://www.redalyc.org/revista.oa?id=464 Brazilian Journal of Physics application/pdf Sociedade Brasileira de Física Brazilian Journal of Physics (Brasil) Num.1 Vol.45 |
| title | Response Function Theory for Many-Body Systems Away from Equilibrium: Conditions of Ultrafast-Time and Ultrasmall-Space Experimental Resolution |
| topic | Física, Astronomía y Matemáticas Semiconductors Response function Scattering theory Ultrafast processes |
| url | https://www.redalyc.org/articulo.oa?id=46433753021 |