10 research outputs found
Bounding the greybody factors for scalar field excitations on the Kerr-Newman spacetime
Hawking Radiation from Higher-Dimensional Black Holes
We review the quantum field theory description of Hawking radiation from evaporating black holes and summarize what is known about Hawking radiation from black holes in more than four space-time dimensions. In the context of the Large Extra Dimensions scenario, we present the theoretical formalism for all types of emitted fields and a selection of results on the radiation spectra. A detailed analysis of the Hawking fluxes in this case is essential for modelling the evaporation of higher-dimensional black holes at the LHC, whose creation is predicted by low-energy models of quantum gravity. We discuss the status of the quest for black-hole solutions in the context of the Randall-Sundrum brane-world model and, in the absence of an exact metric, we review what is known about Hawking radiation from such black holes
The Birth of AGNs and Quasars via the Collapse of Dense Star Clusters to Supermassive Black Holes
Uniform Energy Bound and Morawetz Estimate for Extreme Components of Spin Fields in the Exterior of a Slowly Rotating Kerr Black Hole II: Linearized Gravity
A spacetime description of relativistic media
discussion is given of relativistic balance laws that may be used to construct models of material media with spin and electromagnetic properties, interacting with general background electromagnetic fields and gravitation described by non-Riemannian geometries. The general framework offers an approximation scheme for modelling relativistic media by supplementing the balance laws with conditions that convert them into an involutive differential system