Energy Reflection and Transmission at 2D Holographic Interfaces

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 interfac...

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Bibliographic Details
Published in:Physical review letters 2020-12, Vol.125 (23), p.231602-231602, Article 231602
Main Authors: Bachas, Constantin, Chapman, Shira, Ge, Dongsheng, Policastro, Giuseppe
Format: Article
Language:English
Subjects:
Field theory
General Physics
General Relativity and Quantum Cosmology
High Energy Physics - Theory
Holography
Lower bounds
Physics
Reflectance
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Summary: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.
ISSN:0031-9007
1079-7114
DOI:10.1103/physrevlett.125.231602