Theoretical Physics Seminar: Andrea Fontanella

  • Date: –15:00
  • Location: Ångströmlaboratoriet, Lägerhyddsvägen 1 Oseenska rummet (73121)
  • Lecturer: Andrea Fontanella
  • Contact person: Aleksandr Popolitov
  • Seminarium

Beyond the horizon conjecture and bulk extension

The horizon conjecture, proved in a case by case basis, states that every supersymmetric horizon in any supergravity theory admits a sl(2, R) symmetry algebra. In the first part of this talk, I will discuss the horizon conjecture in heterotic theory beyond the supergravity approximation. Global theorems valid in the supergravity approximation, such as the Lichnerowicz theorem, are spoiled by the string corrections. However, a sufficient condition to establish the horizon conjecture beyond the supergravity approximation is identified. In the second part, I will discuss the extension of a prescribed horizon into the bulk. The horizon fields will be deformed at first order in the radial direction (the moduli), and the dimension of the moduli space will be shown to be finite. This talk is based on work done in collaboration with Jan Gutowski and George Papadopoulos, arXiv:1605.05635 and arXiv:1610.09949.