dorsal/arxiv
View SchemaTransient QED effects in absorbing dielectrics
| Authors | Martijn Wubs, L. G. Suttorp |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0101075 |
| URL | https://arxiv.org/abs/quant-ph/0101075 |
| DOI | 10.1103/PhysRevA.63.043809 |
| Journal | Phys. Rev. A 63, 043809 (2001) |
Abstract
The spontaneous emission rate of a radiating atom reaches its time-independent equilibrium value after an initial transient regime. In this paper we consider the associated relaxation effects of the spontaneous decay rate of atoms in dispersive and absorbing dielectric media for atomic transition frequencies near material resonances. A quantum mechanical description of such media is furnished by a damped-polariton model, in which absorption is taken into account through coupling to a bath. We show how all field and matter operators in this theory can be expressed in terms of the bath operators at an initial time. The consistency of these solutions for the field and matter operators are found to depend on the validity of certain velocity sum rules. The transient effects in the spontaneous decay rate are studied with the help of several specific models for the dielectric constant, which are shown to follow from the general theory by adopting particular forms of the bath coupling constant.
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"abstract": "The spontaneous emission rate of a radiating atom reaches its\ntime-independent equilibrium value after an initial transient regime. In this\npaper we consider the associated relaxation effects of the spontaneous decay\nrate of atoms in dispersive and absorbing dielectric media for atomic\ntransition frequencies near material resonances. A quantum mechanical\ndescription of such media is furnished by a damped-polariton model, in which\nabsorption is taken into account through coupling to a bath. We show how all\nfield and matter operators in this theory can be expressed in terms of the bath\noperators at an initial time. The consistency of these solutions for the field\nand matter operators are found to depend on the validity of certain velocity\nsum rules. The transient effects in the spontaneous decay rate are studied with\nthe help of several specific models for the dielectric constant, which are\nshown to follow from the general theory by adopting particular forms of the\nbath coupling constant.",
"arxiv_id": "quant-ph/0101075",
"authors": [
"Martijn Wubs",
"L. G. Suttorp"
],
"categories": [
"quant-ph"
],
"doi": "10.1103/PhysRevA.63.043809",
"journal_ref": "Phys. Rev. A 63, 043809 (2001)",
"title": "Transient QED effects in absorbing dielectrics",
"url": "https://arxiv.org/abs/quant-ph/0101075"
},
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