A study of quantum field theories in AdS at finite coupling
Abstract
We study the $O(N)$ and Gross-Neveu models at large $$N$$ on AdS$$_{d+1}$$ background. Thanks to the isometries of AdS, the observables in these theories are constrained by the SO$(d,2)$ conformal group even in the presence of mass deformations, as was discussed by Callan and Wilczek, and provide an interesting two-parameter family of quantities which interpolate between the S-matrices in flat space and the correlators in CFT with a boundary. For the actual computation, we judiciously use the spectral representation to resum loop diagrams in the bulk. After the resummation, the AdS $$4$$-particle scattering amplitude is given in terms of a single unknown function of the spectral parameter. We then "bootstrap" the unknown function by requiring the absence of double-trace operators in the boundary OPE. Our results are at leading nontrivial order in $$\frac{1}{N}$$, and include the full dependence on the quartic coupling, the mass parameters, and the AdS radius. In the bosonic $O(N)$ model we study both the massive phase and the symmetry-breaking phase, which exists even in AdS$$_2$$ evading Coleman's theorem, and identify the AdS analogue of a resonance in flat space. We then propose that symmetry breaking in AdS implies the existence of a conformal manifold in the boundary conformal theory. We also provide evidence for the existence of a critical point with bulk conformal symmetry, matching existing results and finding new ones for the conformal boundary conditions of the critical theories. For the Gross-Neveu model we find a bound state, which interpolates between the familiar bound state in flat space and the displacement operator at the critical point.
- Authors:
-
- California Inst. of Technology (CalTech), Pasadena, CA (United States). Walter Burke Inst. for Theoretical Physics
- Perimeter Inst. for Theoretical Physics, Waterloo, ON (Canada)
- Inst. for Advanced Study, Princeton, NJ (United States). School of Natural Sciences
- Publication Date:
- Research Org.:
- Institute for Advanced Study, Princeton, NJ (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), High Energy Physics (HEP)
- Contributing Org.:
- Perimeter Institute for Theoretical Physics
- OSTI Identifier:
- 1596660
- Grant/Contract Number:
- SC0009988
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of High Energy Physics (Online)
- Additional Journal Information:
- Journal Name: Journal of High Energy Physics (Online); Journal Volume: 2019; Journal Issue: 1; Journal ID: ISSN 1029-8479
- Publisher:
- Springer Berlin
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; 1/N Expansion; Conformal Field Theory; Renormalization Group; Resummation
Citation Formats
Carmi, Dean, Di Pietro, Lorenzo, and Komatsu, Shota. A study of quantum field theories in AdS at finite coupling. United States: N. p., 2019.
Web. doi:10.1007/JHEP01(2019)200.
Carmi, Dean, Di Pietro, Lorenzo, & Komatsu, Shota. A study of quantum field theories in AdS at finite coupling. United States. https://doi.org/10.1007/JHEP01(2019)200
Carmi, Dean, Di Pietro, Lorenzo, and Komatsu, Shota. Fri .
"A study of quantum field theories in AdS at finite coupling". United States. https://doi.org/10.1007/JHEP01(2019)200. https://www.osti.gov/servlets/purl/1596660.
@article{osti_1596660,
title = {A study of quantum field theories in AdS at finite coupling},
author = {Carmi, Dean and Di Pietro, Lorenzo and Komatsu, Shota},
abstractNote = {We study the $O(N)$ and Gross-Neveu models at large $N$ on AdS$_{d+1}$ background. Thanks to the isometries of AdS, the observables in these theories are constrained by the SO$(d,2)$ conformal group even in the presence of mass deformations, as was discussed by Callan and Wilczek, and provide an interesting two-parameter family of quantities which interpolate between the S-matrices in flat space and the correlators in CFT with a boundary. For the actual computation, we judiciously use the spectral representation to resum loop diagrams in the bulk. After the resummation, the AdS $4$-particle scattering amplitude is given in terms of a single unknown function of the spectral parameter. We then "bootstrap" the unknown function by requiring the absence of double-trace operators in the boundary OPE. Our results are at leading nontrivial order in $\frac{1}{N}$, and include the full dependence on the quartic coupling, the mass parameters, and the AdS radius. In the bosonic $O(N)$ model we study both the massive phase and the symmetry-breaking phase, which exists even in AdS$_2$ evading Coleman's theorem, and identify the AdS analogue of a resonance in flat space. We then propose that symmetry breaking in AdS implies the existence of a conformal manifold in the boundary conformal theory. We also provide evidence for the existence of a critical point with bulk conformal symmetry, matching existing results and finding new ones for the conformal boundary conditions of the critical theories. For the Gross-Neveu model we find a bound state, which interpolates between the familiar bound state in flat space and the displacement operator at the critical point.},
doi = {10.1007/JHEP01(2019)200},
journal = {Journal of High Energy Physics (Online)},
number = 1,
volume = 2019,
place = {United States},
year = {Fri Jan 25 00:00:00 EST 2019},
month = {Fri Jan 25 00:00:00 EST 2019}
}
Web of Science
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