In this paper, we study Hawking radiation in Jackiw-Teitelboim gravity for minimally coupled massless and massive scalar fields. We employ a holography-inspired technique to derive the Bogoliubov coefficients. We consider both black holes in equilibrium and black holes attached to a bath. In the latter case, we compute semiclassical deviations from the thermal spectrum.
Bogoliubov coefficients for minimally coupled scalar fields (massless and massive) in JT gravity can be derived via a holography-inspired technique, yielding the thermal Hawking spectrum for equilibrium black holes and computable semiclassical deviations when the black hole is attached to a bath.
The validity and applicability of the unspecified "holography-inspired technique" for extracting Bogoliubov coefficients in JT gravity — particularly that it correctly captures the bulk scattering data for massive scalars and for the non-equilibrium bath-coupled setup, where the standard holographic dictionary is less straightforward.
1/ JT gravity is a 2D dilaton gravity model, popular as a tractable testbed for black hole evaporation and the island program. The authors look at Hawking radiation in this setting for scalar fields, both massless and massive. 2/ They use a "holography-inspired" technique to compute Bogoliubov coefficients — the objects that translate vacuum modes between observers and give the Hawking spectrum. They handle equilibrium black holes and ones coupled to an external bath. 3/ For the bath case they report semiclassical deviations from the thermal spectrum. Without the full text, the technique's domain of validity (especially for massive fields and non-equilibrium) is the load-bearing piece to verify.
In a simple toy universe, scientists calculate the faint glow leaking from a black hole, including when it touches outside stuff.
Abstract-only review; cannot inspect the actual derivation, the precise form of the "holography-inspired technique," or the deviations from thermality. The setup (JT gravity, minimally coupled scalars, eternal vs bath-coupled black holes) is standard and well-studied, so the claim is plausible in principle. Novelty hinges on the specific computational technique and the form of the semiclassical corrections, neither of which is described in the abstract. Confidence is LOW pending full text. No red flags identifiable from the abstract alone.