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arXiv · 2603.13120

On Radiative Fluxes and Coulombic Charges in the Balance Law for Black Hole Evaporation

Eugenio Bianchi·Daniel E. Paraizo
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Abstract

In asymptotically-flat spacetimes, there is a clear distinction between radiative fluxes and Coulombic charges. Using the Wald-Zoupas prescription, we identify the classical radiative flux of a massless scalar field in 3+1 dimensions. In a spherically-symmetric model of black hole evaporation, the balance law yields a Bondi mass correction related to the entanglement entropy of Hawking radiation. The renormalized flux is nonnegative, differs from the Fulling-Davies formula, and coincides with the Ashtekar-Taveras-Varadarajan flux. We discuss implications for 3+1 black hole evaporation.

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Eugenio Bianchi, Daniel E. Paraizo. 2026-09-20. On Radiative Fluxes and Coulombic Charges in the Balance Law for Black Hole Evaporation. https://arxiv.org/abs/2603.13120

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