Thermal three-point functions from holographic Schwinger-Keldysh contours

Autor:	Pantelidou, Christiana, Withers, Benjamin
Rok vydání:	2022
Předmět:	High Energy Physics - Theory Condensed Matter - Statistical Mechanics General Relativity and Quantum Cosmology
Druh dokumentu:	Working Paper
DOI:	10.1007/JHEP04(2023)050
Popis:	We compute fully retarded scalar three-point functions of holographic CFTs at finite temperature using real-time holography. They describe the nonlinear response of a holographic medium under scalar forcing, and display single and higher-order poles associated to resonant QNM excitations. This involves computing the bulk-to-bulk propagator on a piecewise mixed-signature spacetime, the dual of the Schwinger-Keldysh contour. We show this construction is equivalent to imposing ingoing boundary conditions on a single copy of a black hole spacetime, similar to the case of the two-point function. We also compute retarded scalar correlators with stress-tensor insertions in general CFTs by solving Ward identities on the Schwinger-Keldysh contour. Comment: 21 pages, 4 figures. Typo fixed and discussed FDT with bulk-bulk propagators
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2211.09140 Zobrazit plný text záznamu View this record from Arxiv