Year: 2024
Type: article
Abstract: A bstract Starting from the Lorentzian inversion formula, we derive a dispersion relation which computes a four-point function in 1d CFTs as an integral over its double discontinuity. The crossing symmetric kernel of the integral is given explicitly for the case of identical operators with integer or half-integer scaling dimension. This derivation complements the one that uses analytic functionals. We use the dispersion relation to evaluate holographic correlators defined on the half-BPS Wilson line of planar $$ \mathcal{N} $$ N = 4 super Yang-Mills, reproducing results up to fourth order in an expansion at large t’Hooft coupling.
Source: Journal of High Energy Physics
Authors: Davide Bonomi, Valentina Forini
Institutions: City, University of London, Humboldt-Universität zu Berlin
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W4403729089