Testing the weak-equivalence principle near black holes

Metric fluctuations and the Weak Equivalence Principle

We describe space–time fluctuations by means of small fluctuations of the metric on a given background metric. From a minimally coupled Klein–Gordon equation we obtain within a weakfield approximation up to second order and an averaging procedure over a finite space–time scale given by the quantum particle in the non–relativistic limit a modified Schrödinger equation. The dominant modification ...

Black Holes and the Holographic Principle

This lecture reviews the black hole information paradox and briefly appraises some proposed resolutions in view of developments in string theory. It goes on to give an elementary introduction to the holographic principle.

Charged black holes from near extremal black holes

We recover the properties of a wide class of far from extremal charged black branes from properties of near extremal black branes, generalizing the results of Danielsson, Guijosa and Kruczenski.

Forced motion near black holes

Jonathan R. Gair, Éanna É. Flanagan, Steve Drasco, Tanja Hinderer, and Stanislav Babak Institute of Astronomy, Madingley Road, Cambridge CB3 0HA, UK Center for Radiophysics and Space Research, Cornell University, Ithaca, New York 14853, USA Albert-Einstein-Institut, Max-Planck-Institut für Gravitationsphysik, D-14476 Golm, Germany Theoretical Astrophysics, California Institute of Technology, Pa...

Dark-Matter-Induced Weak Equivalence Principle Violation