Quantum radiation from a sandwich black hole
arXiv:1612.05319 · doi:10.1103/PhysRevD.95.044042
Abstract
We discuss quantum radiation of a massless scalar field from a spherically symmetric nonsingular black hole with finite lifetime. Namely, we discuss a sandwich black-hole model, where a black hole is originally created by a collapse of a null shell of mass , and later, after some time , it is disrupted by the collapse of the other shell with negative mass . We assume that between the shells the metric is static and either coincides with the Hayward metric or with a special generalization of it. We show that in both cases for sufficiently large parameter the radiation after the formation of the black hole practically coincides with the Hawking result. We also calculated the radiation, emitted from the black hole interior. This radiation contains peak at the moment when the second shell intersects the inner horizon. In the standard sandwich metric (with the Hayward interior) this outburst of the energy is exponentially large. In the modified metric, which includes additional non-trivial redshift parameter, this exponent is suppressed. This is a result of significant decrease of the surface gravity of the inner horizon in the latter case. We discuss possible consequences of this result in context of the self-consistency requirement for nonsingular models with quantum radiation.
arXiv comment20 pages, 16 figures, new references added
References in corpus (37)
- Formation and evaporation of non-singular black holes
- Noncommutative geometry inspired Schwarzschild black hole
- Towards singularity and ghost free theories of gravity
- Super-renormalizable Quantum Gravity
- Notes on non-singular models of black holes
- Black hole fireworks: quantum-gravity effects outside the horizon spark black to white hole tunneling
- Super-renormalizable & Finite Gravitational Theories
- Regular Black Holes and Topology Change
- Towards a Resolution of the Cosmological Singularity in Non-local Higher Derivative Theories of Gravity
- Black holes in an ultraviolet complete quantum gravity
- Information loss problem and a `black hole' model with a closed apparent horizon
- Generalized ghost-free quadratic curvature gravity
- Mass-gap for black hole formation in higher derivative and ghost free gravity
- Non-singular quantum-inspired gravitational collapse
- A model of radiating black hole in noncommutative geometry
- Nonlocal and quasi-local field theories
- A model for non-singular black hole collapse and evaporation
- Head-on collision of ultrarelativistic particles in ghost-free theories of gravity
- Towards understanding the ultraviolet behavior of quantum loops in infinite-derivative theories of gravity
- Trace Anomaly in Quantum Spacetime Manifold
- On the Effective Metric of a Planck Star
- Terminating black holes in asymptotically free quantum gravity
- A Nonsingular Two Dimensional Black Hole
- Stochastically Fluctuating Black-Hole Geometry, Hawking Radiation and the Trans-Planckian Problem
- Hawking radiation of nonsingular black holes in two dimensions
- Metric Fluctuation Corrections to Hawking Radiation
- Super-accelerating bouncing cosmology in asymptotically-free non-local gravity
- Exact solutions and spacetime singularities in nonlocal gravity
- Phenomenology of bouncing black holes in quantum gravity: a closer look
- Wald's gravitational entropy for ghost-free, infinite derivative theories of Gravity
- Can static regular black holes form from gravitational collapse?
- New 2D dilaton gravity for nonsingular black holes
- Black supernovae and black holes in non-local gravity
- Non-singular rotating black hole with a time delay in the center
- Entanglement entropy production in gravitational collapse: covariant regularization and solvable models
- Lee-Wick Black Holes
- Modelling the Evaporation of Non-singular Black Holes
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- Quantum radiation from an evaporating non-singular black hole
- Non-polynomial Lagrangian approach to Regular Black Holes
- A note on singular and non-singular black holes
- Regular black holes inspired by quasi-topological gravity
- Semiclassical instability of inner-extremal regular black holes
- Asymptotic magnetically charged non-singular black hole and its thermodynamics
- Thermodynamics of two black holes
- Asymptotic flatness and Hawking quasilocal mass
- The semi-classical stress-energy tensor in a Schwarzschild background, the information paradox, and the fate of an evaporating black hole
- Primordial black holes as cosmic expansion accelerators
- Understanding black hole evaporation using explicitly computed Penrose diagrams
- Models for the nonsingular transition of an evaporating black hole into a white hole
- Evaporation of a nonsingular Reissner-Nordström black hole and information loss problem
- Metric fluctuations in higher-dimensional black holes
- A model of regular black hole satisfying the Weak Energy Condition
- A no-go theorem for regular black holes
- Imaging the destruction of a rotating regular black hole
- Novel very-high-frequency quasi-periodic oscillations of compact, non-singular objects
- Hawking radiation from an evaporating black hole via Bogoliubov transformations