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Four Attitudes Towards Singularities in the Search for a Theory of Quantum Gravity
Karen Crowther, Sebastian De Haro
Singularities in general relativity and quantum field theory are often taken not only to motivate the search for a more-fundamental theory (quantum gravity, QG), but also to charac…
The Invisibility of Diffeomorphisms
Sebastian De Haro
I examine the relationship between -dimensional Poincaré metrics and -dimensional conformal manifolds, from both mathematical and physical perspectives. The results have…
Planckian Scattering and Black Holes
Sebastian de Haro
Recently, 't Hooft's S-matrix for black hole evaporation, obtained from the gravitational interactions between the in-falling particles and Hawking radiation, has been generalised…
Non-Commutative Black Hole Algebra and String Theory from Gravity
S. de Haro
We generalize the action found by 't Hooft, which describes the gravitational interaction between ingoing and outgoing particles in the neighbourhood of a black hole. The effect of…