Now showing items 1-8 of 8

• #### Black Hole Superradiance From Kerr/CFT ﻿

(Springer Verlag, 2010)
The superradiant scattering of a scalar field with frequency and angular momentum (w,m) by a near-extreme Kerr black hole with mass and spin (M, J) was derived in the seventies by Starobinsky, Churilov, Press and Teukolsky. ...
• #### Chiral Gravity in Three Dimensions ﻿

(Springer, 2008)
Three dimensional Einstein gravity with negative cosmological constant $-1/\ell^2$ deformed by a gravitational Chern-Simons action with coefficient $1/\mu$ is studied in an asymptotically $AdS_3$ spacetime. It is ...
• #### Chiral Gravity, Log Gravity, and Extremal CFT ﻿

(American Physical Society, 2010)
We show that the linearization of all exact solutions of classical chiral gravity around the AdS3 vacuum have positive energy. Non-chiral and negative-energy solutions of the linearized equations are infrared divergent at ...
• #### Chiral Liouville Gravity ﻿

(Springer Science + Business Media, 2013)
Classical two-dimensional Liouville gravity is often considered in conformal gauge which has a residual left and right Virasoro symmetry algebra. We consider an alternate, chiral, gauge which has a residual right Virasoro ...
• #### Holographic Derivation of Kerr-Newman Scattering Amplitudes for General Charge and Spin ﻿

(Springer, 2010)
Near-superradiant scattering of charged scalars and fermions by a near-extreme Kerr-Newman black hole and photons and gravitons by a near-extreme Kerr black hole are computed as certain Fourier transforms of correlators ...
• #### The Kerr/CFT Correspondence ﻿

(American Physical Society, 2009)
Quantum gravity in the region very near the horizon of an extreme Kerr black hole (whose angular momentum and mass are related by $J = GM^2$) is considered. It is shown that consistent boundary conditions exist, for which ...
• #### New Boundary Conditions for $AdS_3$ ﻿

(Springer Science + Business Media, 2013)
New chiral boundary conditions are found for quantum gravity with matter on $AdS_3$. The associated asymptotic symmetry group is generated by a single right-moving U(1) Kac-Moody-Virasoro algebra with $c_R=\frac{3ℓ}{2G}$. ...
• #### Warped $AdS_3$/Dipole-CFT Duality ﻿

(Springer-Verlag, 2012)
String theory contains solutions with $SL(2, \mathbb{R})_R \times U(1)_L$-invariant warped $AdS_3$ $(WAdS_3)$ factors arising as continuous deformations of ordinary $AdS_3$ factors. We propose that some of these ...