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Singularities of thermal correlators at strong coupling
- Source :
- Physical Review
- Publication Year :
- 2020
- Publisher :
- arXiv, 2020.
-
Abstract
- We analyze the singularities of the two-point function in a conformal field theory at finite temperature. In a free theory, the only singularity is along the boundary light cone. In the holographic limit, a new class of singularities emerges since two boundary points can be connected by a nontrivial null geodesic in the bulk, encircling the photon sphere of the black hole. We show that these new singularities are resolved by tidal effects due to the black hole curvature, by solving the string worldsheet theory in the Penrose limit. Singularities in the asymptotically flat black hole geometry are also discussed.<br />Comment: 26 pages; minor corrections, references added
- Subjects :
- High Energy Physics - Theory
Physics
010308 nuclear & particles physics
Astrophysics::High Energy Astrophysical Phenomena
Holography
Propagator
FOS: Physical sciences
String theory
Lambda
Coupling (probability)
01 natural sciences
law.invention
Theoretical physics
General Relativity and Quantum Cosmology
High Energy Physics - Theory (hep-th)
law
0103 physical sciences
Thermal
Tidal force
Gravitational singularity
010306 general physics
Subjects
Details
- Database :
- OpenAIRE
- Journal :
- Physical Review
- Accession number :
- edsair.doi.dedup.....8437167d91c345fdb4b479df61a700bc
- Full Text :
- https://doi.org/10.48550/arxiv.2010.09734