Erlangen 2026 – wissenschaftliches Programm

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GR: Fachverband Gravitation, Relativistische Astrophysik und Kosmologie

GR 9: Black Holes II

GR 9.4: Vortrag

Mittwoch, 18. März 2026, 14:30–14:45, KH 02.012

Astrophysical Quantum Matter: Black-Hole and Cosmological Particle Production — •Michael Florian Wondrak — Anton Pannekoek Institute for Astronomy/GRAPPA, University of Amsterdam, The Netherlands

Energy extraction from black holes is---at first sight---a counter-intuitive concept. However, black holes are known to lose mass by classical and quantum processes. In recent work, the formal analogy with particle production by electric fields (Schwinger effect) was elaborated.

Building upon this analogy, we will use independent techniques, from canonical to path-integral quantization, to predict quantum particle production in astrophysical settings, from black holes to cosmology. We will present a novel class of time profiles allowing an analytic treatment and allowing an exact prediction of particles produced. We will put the findings into context and comment on the impact of backreaction.

Keywords: Energy extraction from black holes; Gravitational particle production; Hawking effect; Schwinger effect; Thermodynamics of regular black holes