Black holes from large N singlet models

• Published in: Journal of High Energy Physics
• Main Authors: Amado, Irene, Sundborg, Bo, Thorlacius, Larus, Wintergerst, Nico
• Other Authors: Raunvísindastofnun (HÍ), Science Institute (UI), Verkfræði- og náttúruvísindasvið (HÍ), School of Engineering and Natural Sciences (UI), Háskóli Íslands, University of Iceland
• Format: Article in Journal/Newspaper
• Language: English
• Published: Springer Nature 2018
• Subjects: AdS-CFT Correspondence; Black Holes in String Theory; Higher Spin Gravity; Confinement; Svarthol (stjörnufræði); Strengjafræði; Iceland
• Online Access: https://hdl.handle.net/20.500.11815/914; https://doi.org/10.1007/JHEP03(2018)075

Publisher's version (útgefin grein) The emergent nature of spacetime geometry and black holes can be directly probed in simple holographic duals of higher spin gravity and tensionless string theory. To this end, we study time dependent thermal correlation functions of gauge invariant observables in suitably chosen free large N gauge theories. At low temperature and on short time scales the correlation functions encode propagation through an approximate AdS spacetime while interesting departures emerge at high temperature and on longer time scales. This includes the existence of evanescent modes and the exponential decay of time dependent boundary correlations, both of which are well known indicators of bulk black holes in AdS/CFT. In addition, a new time scale emerges after which the correlation functions return to a bulk thermal AdS form up to an overall temperature dependent normalization. A corresponding length scale was seen in equal time correlation functions in the same models in our earlier work. This work was supported in part by the Swedish Research Council through the Oskar Klein Centre, under contract 621-2014-5838 and under contract 335-2014-7424, the Icelandic Research Fund grant 163422-052 and the University of Iceland Research Fund. Peer Reviewed