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Horizon replicas in black hole shadows

Nuclear Physics B
Recently, new exploratory channels have opened up for the physics of highly compact objects, such as gravitational waves and black hole shadows. Moreover, more precise analysis and observations are now possible in the physics of accretion around compact ...
D. Pugliese, H. Quevedo
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Black Holes and Exotic Spinors

Universe, 2016
Exotic spin structures are non-trivial liftings, of the orthogonal bundle to the spin bundle, on orientable manifolds that admit spin structures according to the celebrated Geroch theorem.
J. M. Hoff da Silva, C. H. Coronado Villalobos, Roldao da Rocha   +2 more
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Can black holes preserve 𝒩 > 4 supersymmetry?

Journal of High Energy Physics
The dynamics of near-BPS black holes are governed by the breaking of the conformal symmetry that emerges near their horizons. Using the classification of superconformal symmetries, we systematically classify and quantize all effective theories that can ...
Matthew Heydeman, Xiaoyi Shi, Gustavo J. Turiaci   +2 more
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Celestial amplitudes in an ambidextrous basis

Journal of High Energy Physics, 2023
We start by constructing a conformally covariant improvement of the celestial light transform which keeps track of the mixing between incoming and outgoing states under finite Lorentz transformations in ℝ2,2.
Carmen Jorge-Diaz, Sabrina Pasterski, Atul Sharma   +2 more
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Spectrum of BPS black holes in AdS3 × S 3 × S 3 × S 1

Journal of High Energy Physics
We uncover novel features in the spectrum of BPS and near-BPS states in asymptotically AdS3 × S 3 × S 3 × S 1 spacetimes. This follows from a careful analysis of semiclassical and quantum black holes in this theory, which have peculiarities due to the ...
Matthew Heydeman, Xiaoyi Shi, Gustavo J. Turiaci   +2 more
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Thermodynamic Metrics and Black Hole Physics

Entropy, 2015
We give a brief survey of thermodynamic metrics, in particular the Hessian of the entropy function, and how they apply to black hole thermodynamics. We then provide a detailed discussion of the Gibbs surface of Kerr black holes. In particular, we analyze
Jan E. Åman, Ingemar Bengtsson, Narit Pidokrajt   +2 more
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Braneworld black holes and entropy bounds

Physics Letters B, 2018
The Bousso's D-bound entropy for the various possible black hole solutions on a 4-dimensional brane is checked. It is found that the D-bound entropy here is apparently different from that of obtained for the 4-dimensional black hole solutions.
Y. Heydarzade, H. Hadi, C. Corda, F. Darabi   +3 more
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Supersymmetry breaking in SYK and the black hole spectrum

Journal of High Energy Physics
The spectrum and dynamics of near-extremal black holes is strongly modified by quantum effects at low temperatures. When the extremal limit does not preserve any supersymmetry, the density of states goes to zero at extremality and no extremal black holes
Matthew Heydeman, Yifei Liu, Gustavo J. Turiaci   +2 more
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Evolving Black Hole Horizons in General Relativity and Alternative Gravity

Galaxies, 2013
From the microscopic point of view, realistic black holes are time-dependent and the teleological concept of the event horizon fails. At present, the apparent or trapping horizon seem to be its best replacements in various areas of black hole physics. We
Valerio Faraoni
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Analogous Black Holes in Type-III Dirac Semimetal Ni₃In₂X₂ (X = S, Se)

Crystals, 2023
Black holes are objects that have a large mass and curve space time, characterized by their event horizon and singularity. Recently, an interesting concept of analogous black holes has emerged in the field of condensed matter physics.
Christopher Sims
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