Gravitational Pair Production and Black Hole Evaporation

Abstract

We present a new avenue to black hole evaporation using a heat-kernel approach analogous as for the Schwinger effect. Applying this method to an uncharged massless scalar field in a Schwarzschild spacetime, we show that spacetime curvature takes a similar role as the electric field strength in the Schwinger effect. We interpret our results as local pair production in a gravitational field and derive a radial production profile. The resulting emission peaks near the unstable photon orbit. Comparing the particle number and energy flux to the Hawking case, we find both effects to be of similar order. However, our pair production mechanism itself does not explicitly make use of the presence of a black hole event horizon.

11 pages, 2 figures. To appear in Physical Review Letters

References in corpus (6)

• Advances in QED with intense background fields
• Cosmological Particle Production: A Review
• Out-of-equilibrium criticalities in graphene superlattices
• On the non-local heat kernel expansion
• Testing Quantum Electrodynamics with Exotic Atoms
• Euler - Heisenberg effective action and magnetoelectric effect in multilayer graphene

Cited by in corpus (13)

• Pure Lovelock Gravity regular black holes
• Shedding new light on the absence of fermionic superradiance and maximal infalling rate of fermions into a black hole
• Complex effective actions and gravitational pair creation
• When gravitational decoupling and quantum gravity (re)unite
• Phenomenology of Holography via Quantum Coherence on Causal Horizons
• Black Hole Quasi-Periodic Oscillations in the Presence of Gauss-Bonnet Trace Anomaly
• Constructing Regular Lovelock Black Holes with degenerate vacuum and $\Lambda <0$, using the gravitational tension. Shadow analysis
• Reply to "Comment on 'Gravitational Pair Production and Black Hole Evaporation'"
• Cosmological inhomogeneities, primordial black holes, and a hypothesis on the death of the universe
• Inconsistency with De Sitter Spacetime in a New Approach to Gravitational Particle Production
• An upper limit to the lifetime of stellar remnants from gravitational pair production
• Correction to Hawking radiation in non-singular gravitational collapse
• Particle production rate for a dynamical system using the path integral approach