Membrane paradigm, gravitational Θ-term and gauge/gravity duality
Abstract
Following the membrane paradigm, we explore the effect of the gravitational Θ-term on the behavior of the stretched horizon of a black hole in (3 + 1)-dimensions. We reformulate the membrane paradigm from a quantum path-integral point of view where we interpret the macroscopic properties of the horizon as effects of integrating out the region inside the horizon. The gravitational Θ-term is a total derivative, however, using our framework we show that this term affects the transport properties of the horizon. In particular, the horizon acquires a third order parity violating, dimensionless transport coefficient which affects the way localized perturbations scramble on the horizon. Then we consider a large-N gauge theory in (2 + 1)-dimensions which is dual to an asymptotically AdS background in (3 + 1)-dimensional spacetime to show that the Θ-term induces a non-trivial contact term in the energy-momentum tensor of the dual theory. As a consequence, the dual gauge theory in the presence of the Θ-term acquires the same third order parity violating transport coefficient.
- Publication:
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Journal of High Energy Physics
- Pub Date:
- April 2016
- DOI:
- 10.1007/JHEP04(2016)112
- arXiv:
- arXiv:1512.01238
- Bibcode:
- 2016JHEP...04..112F
- Keywords:
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- AdS-CFT Correspondence;
- Black Holes;
- Classical Theories of Gravity;
- CP violation;
- High Energy Physics - Theory;
- Astrophysics - High Energy Astrophysical Phenomena;
- General Relativity and Quantum Cosmology;
- Quantum Physics
- E-Print:
- 28+9 pages