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Anomaly-driven evaporation endpoints of a two-dimensional regular black hole
Damien A. Easson
Spherical reduction of four-dimensional minimally coupled matter yields a two-dimensional theory with dilaton-coupled matter rather than minimally coupled conformal matter. We use…
The fate of Schwarzschild--de Sitter black holes: nonequilibrium evaporation
Damien A. Easson
We present a fully analytic treatment of Schwarzschild--de~Sitter (SdS) black-hole evaporation in two-dimensional dilaton gravity with anomaly-induced backreaction. Starting from t…
The fate of Reissner--Nordström--de Sitter black holes: nonequilibrium discharge and evaporation
Damien A. Easson
We develop a semiclassical description of Reissner--Nordström--de Sitter (RN--dS) evaporation by combining a spherically reduced two-dimensional dilaton gravity model with Polyako…
Open case for a closed universe
Nathan L. Burwig, Damien A. Easson
We establish a new no-go theorem for cosmology: spatially flat () and open () Friedmann--Robertson--Walker (FRW) non-static spacetimes cannot be simultaneously nonsingul…
Black Hole Interiors as a Laboratory for Time-Dependent Classical Double Copy
Damien A. Easson, Tucker Manton
The classical double copy provides a powerful bridge between gravity and gauge theory, but its most explicit realizations remain concentrated in stationary or highly symmetric sett…
Untwisting the double copy: the zeroth copy as an optical seed
Damien A. Easson, Michael J. Falato
We present a historical optical foundation for stationary vacuum Kerr--Schild spacetimes on a flat background and interpret it in modern double-copy language. In this setting, a co…