Wave propagation in stochastic space-times: Localization, amplification and particle creation - INSPIRE

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Wave propagation in stochastic space-times: Localization, amplification and particle creation

B.L. Hu
(
- Maryland U.
)
,
K. Shiokawa
(
- Maryland U.
)

Jul, 1997

27 pages

Published in:

Phys.Rev.D 57 (1998) 3474-3483

e-Print:

gr-qc/9708023 [gr-qc]

DOI:

10.1103/PhysRevD.57.3474

Report number:

UMDPP-97-125

View in:

ADS Abstract Service

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Abstract: (arXiv)

Here we study novel effects associated with electromagnetic wave propagation in a Robertson-Walker universe and the Schwarzschild spacetime with a small amount of metric stochasticity. We find that localization of electromagnetic waves occurs in a Robertson-Walker universe with time-independent metric stochasticity, while time-dependent metric stochasticity induces exponential instability in the particle production rate. For the Schwarzschild metric, time-independent randomness can decrease the total luminosity of Hawking radiation due to multiple scattering of waves outside the black hole and gives rise to event horizon fluctuations and thus fluctuations in the Hawking temperature.

Note:

26 pages, 1 Postscript figure, submitted to Phys. Rev. D on July 29, 1997

radiation: electromagnetic
space-time: Robertson-Walker
space-time: Schwarzschild
space-time: stochastic
time dependence
particle: production
radiation: Hawking
temperature: fluctuation
black hole

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