ar X iv : g r - qc / 0 60 51 13 v 1 2 1 M

ar X iv : g r - qc / 0 60 51 13 v 1 2 1 M ay

M. Sami, 2 Parampreet Singh, and Shinji Tsujikawa Centre for Theoretical Physics, Jamia Millia, New Delhi-110025, India Department of Physics, Jamia Millia, New Delhi-110025, India Institute for Gravitational Physics and Geometry, Physics Department, Penn State, University Park, PA 16802, U.S.A. Department of Physics, Gunma National College of Technology, Gunma 371-8530, Japan (Dated: December ...

ar X iv : g r - qc / 0 51 01 27 v 1 3 1 O ct 2 00 5 Imprints of Spacetime Topology in the Hawking - Unruh Effect

ar X iv : g r - qc / 0 50 51 30 v 1 2 6 M ay 2 00 5 An Exact Solution for Static Scalar Fields Coupled to Gravity in ( 2 + 1 ) - Dimensions

We obtain an exact solution for the Einstein’s equations with cosmological constant coupled to a scalar, static particle in static, ”spherically” symmetric background in 2 + 1 dimensions. ————————————————————————————

ar X iv : g r - qc / 0 60 20 37 v 2 4 M ar 2 00 6 1 Gauge / gravity duality

We review the emergence of gravity from gauge theory in the context of AdS/CFT duality. We discuss the evidence for the duality, its lessons for gravitational physics, generalizations, and open questions.

ar X iv : g r - qc / 0 51 10 40 v 1 8 N ov 2 00 5 Canonical gauge - invariant variables for scalar perturbations in synchronous coordinates

Under an appropriate change of the perturbation variable LifshitzKhalatnikov propagation equations for the scalar perturbation reduce to d’Alembert equation. The change of variables is based on the Darboux transform.