Energy Reflection and Transmission at 2D Holographic Interfaces
Constantin P. Bachas, Shira Chapman, Dongsheng Ge, Giuseppe Policastro
Abstract
Scattering from conformal interfaces in two dimensions is universal in that the flux of reflected and transmitted energy does not depend on the details of the initial state. In this Letter, we present the first gravitational calculation of energy reflection and transmission coefficients for interfaces with thin-brane holographic duals. Our result for the reflection coefficient depends monotonically on the tension of the dual string anchored at the interface and obeys the lower bound recently derived from the averaged-null-energy condition in conformal field theory. The boundary-conformal-field-theory limit is recovered for infinite ratio of the central charges.
Topics & Concepts
Reflection (computer programming)PhysicsConformal mapDual polyhedronHolographyString (physics)ScatteringField (mathematics)Energy fluxTransmission (telecommunications)Conformal field theoryOpticsQuantum mechanicsGeometryProgramming languageElectrical engineeringPure mathematicsEngineeringComputer scienceMathematicsBlack Holes and Theoretical PhysicsCosmology and Gravitation TheoriesQuantum Electrodynamics and Casimir Effect