Published September 15, 2004
| Version v1
Journal article
Effects of stress tensor fluctuations upon focusing
Creators
- 1. Institute of Cosmology, Department of Physics and Astronomy, Tufts University, Medford, Massachusetts 02155 (United States)
Description
We treat the gravitational effects of quantum stress tensor fluctuations. An operational approach is adopted in which these fluctuations produce fluctuations in the focusing of a bundle of geodesics. This can be calculated explicitly using the Raychaudhuri equation as a Langevin equation. The physical manifestation of these fluctuations are angular blurring and luminosity fluctuations of the images of distant sources. We give explicit results for the case of a scalar field on a flat background in a thermal state
Additional details
Identifiers
- DOI
- 10.1103/PhysRevD.70.064032;
- arXiv
- arXiv:gr-qc/0307043v2;
Publishing Information
- Journal Title
- Physical Review. D, Particles Fields
- Journal Volume
- 70
- Journal Issue
- 6
- Journal Page Range
- p. 064032-064032.14
- ISSN
- 0556-2821
- CODEN
- PRVDAQ
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 37020446
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; S71: CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS;
- Descriptors DEI
- COSMOLOGY; DIFFERENTIAL EQUATIONS; DIFFERENTIAL GEOMETRY; FLUCTUATIONS; GEODESICS; IMAGES; LANGEVIN EQUATION; QUANTUM GRAVITY; SCALAR FIELDS; STRESSES; TENSORS
- Descriptors DEC
- EQUATIONS; FIELD THEORIES; GEOMETRY; MATHEMATICS; QUANTUM FIELD THEORY; VARIATIONS
Optional Information
- Notes
- (c) 2004 The American Physical Society