Applications of dispersive sum rules: $ε$-expansion and holography
Dean Carmi, Joao Penedones, Joao A. Silva, Alexander Zhiboedov
SciPost Phys. 10, 145 (2021) · published 14 June 2021
- doi: 10.21468/SciPostPhys.10.6.145
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Abstract
We use Mellin space dispersion relations together with Polyakov conditions to derive a family of sum rules for Conformal Field Theories (CFTs). The defining property of these sum rules is suppression of the contribution of the double twist operators. Firstly, we apply these sum rules to the Wilson-Fisher model in $d=4-\epsilon$ dimensions. We re-derive many of the known results to order $\epsilon^4$ and we make new predictions. No assumption of analyticity down to spin $0$ was made. Secondly, we study holographic CFTs. We use dispersive sum rules to obtain tree-level and one-loop anomalous dimensions. Finally, we briefly discuss the contribution of heavy operators to the sum rules in UV complete holographic theories.
Cited by 28
Authors / Affiliations: mappings to Contributors and Organizations
See all Organizations.- 1 2 Dean Carmi,
- 1 Joao Penedones,
- 1 Joao A. Silva,
- 3 Alexander Zhiboedov
- 1 École Polytechnique Fédérale de Lausanne [EPFL]
- 2 University of Haifa
- 3 Organisation européenne pour la recherche nucléaire / European Organization for Nuclear Research [CERN]