Speaker
Andrea Fontanella
(University of Surrey)
Description
The horizon conjecture, proved in a case by case basis, states that every supersymmetric smooth horizon admits an $sl(2, \mathbb{R})$ symmetry algebra. However it is unclear how string corrections modify the statement. In this talk I will present the analysis of supersymmetric near-horizon geometries in heterotic supergravity up to two loop order in sigma model perturbation theory, and show the conditions for the horizon to admit an $sl(2, \mathbb{R})$ symmetry algebra. In the second part of the talk, I shall present a step further on answering the question how many extreme black holes posses a prescribed near-horizon geometry.
Author
Andrea Fontanella
(University of Surrey)
Co-authors
Jan Gutowski
(University of Surrey)
George Papadopoulos
(King's College London)
