Quantum GravityNo Access

STOCHASTIC GRAVITY AND THE LANGEVIN-RAYCHAUDHURI EQUATION

J. BORGMAN

Institute of Cosmology, Department of Physics and Astronomy, Tufts University, Medford, MA 02155, USA

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and

L. H. FORD

Institute of Cosmology, Department of Physics and Astronomy, Tufts University, Medford, MA 02155, USA

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https://doi.org/10.1142/S0217751X05024638Cited by:3 (Source: Crossref)

Abstract

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.

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