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4 papers · 1 filter
Telling Tails In The Presence Of A Cosmological Constant
Patrick R. Brady, Chris M. Chambers, William Krivan +1
We study the evolution of massless scalar waves propagating on spherically symmetric spacetimes with a non-zero cosmological constant. Considering test fields on both Schwarzschild…
Stress-energy of a quantized scalar field in static wormhole spacetimes
Brett E. Taylor, William A. Hiscock, Paul R. Anderson
Static traversable wormhole solutions of the Einstein equations require ``exotic'' matter which violates the weak energy condition. The vacuum stress-energy of quantized fields has…
Quantized fields and temperature in charged dilatonic black hole spacetimes
Daniel J. Loranz, William A. Hiscock
The stress-energy tensor of a quantized scalar field is computed in the reduced two-dimensional charged dilatonic black hole spacetime of Garfinkle, Horowitz, and Strominger. In or…
Effects of Shocks on Emission from AGN's Central Engines -- I
R. Sivron, D. Caditz, S. Tsuruta
In this paper we show that perturbations of the accretion flow within the central engines of active galctic nuclei (AGN) are likely to form shock waves in the accreting plasma. Suc…