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Article overview
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Analytical approximation of the stress-energy tensor of a quantized scalar field in static spherically symmetric spacetimes | Arkady A. Popov
; | Date: |
6 Feb 2003 | Journal: | Phys.Rev. D67 (2003) 044021 | Subject: | hep-th gr-qc | Abstract: | Analytical approximations for ${< phi^2 >}$ and ${< T^{mu}_{
u} >}$ of a quantized scalar field in static spherically symmetric spacetimes are obtained. The field is assumed to be both massive and massless, with an arbitrary coupling $xi$ to the scalar curvature, and in a zero temperature vacuum state. The expressions for ${< phi^2 >}$ and ${< T^{mu}_{
u} >}$ are divided into low- and high-frequency parts. The contributions of the high-frequency modes to these quantities are calculated for an arbitrary quantum state. As an example, the low-frequency contributions to ${< phi^2 >}$ and ${< T^{mu}_{
u} >}$ are calculated in asymptotically flat spacetimes in a quantum state corresponding to the Minkowski vacuum (Boulware quantum state). The limits of the applicability of these approximations are discussed. | Source: | arXiv, hep-th/0302039 | Services: | Forum | Review | PDF | Favorites |
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