Hawking Radiation from Charged Black Holes via Gauge and Gravitational Anomalies

Satoshi Iso , Hiroshi Umetsu , Frank Wilczek

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classification ✦ hep-th gr-qc

keywords blackchargedgaugehawkingquantumanomaliesappropriateavoid

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Extending gr-qc/0502074, we show that in order to avoid a breakdown of general covariance and gauge invariance at the quantum level the total flux of charge and energy in each outgoing partial wave of a charged quantum field in a Reissner-Nordstrom black hole background must be equal to that of a (1+1) dimensional blackbody at the Hawking temperature with the appropriate chemical potential.

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Evaporation of Primordial Black Holes in a Thermal Universe: A Thermofield Dynamics Approach
hep-th 2025-12 unverdicted novelty 5.0

Thermal bath corrections derived via thermofield dynamics enhance the evaporation rate of primordial black holes, shortening their lifetimes relative to zero-temperature calculations.