skip to main content
DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: A tale of two exponentiations in N = 8 supergravity

Abstract

The structure of scattering amplitudes in supergravity theories continues to be of interest. Recently, the amplitude for 2→2 scattering in N=8 supergravity was presented at three-loop order for the first time. The result can be written in terms of an exponentiated one-loop contribution, modulo a remainder function which is free of infrared singularities, but contains leading terms in the high energy Regge limit. We explain the origin of these terms from a well-known, unitarity-restoring exponentiation of the high-energy gravitational S-matrix in impact-parameter space. Furthermore, we predict the existence of similar terms in the remainder function at all higher loop orders. Our results provide a non-trivial cross-check of the recent three-loop calculation, and a necessary consistency constraint for any future calculation at higher loops.

Authors:
; ; ; ; ;
Publication Date:
Research Org.:
Univ. of California, Los Angeles, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP); National Science Foundation (NSF); UK Science and Technology Facilities Council; Marie-Cklodowska-Curie Foundation; Simons Foundation; Knut and Alice Wallenberg Foundation
OSTI Identifier:
1561340
Alternate Identifier(s):
OSTI ID: 1608235
Report Number(s):
BOW-PH-167; NORDITA-2019-076; QMUL-PH-19-20; CERN-TH-2019-133
Journal ID: ISSN 0370-2693; S0370269319306495; 134927; PII: S0370269319306495
Grant/Contract Number:  
SC000993; SC0009937; PHY17-20202; 764850; 4036 342344; KAW 2018.0116; ST/P000754/1
Resource Type:
Published Article
Journal Name:
Physics Letters B
Additional Journal Information:
Journal Name: Physics Letters B Journal Volume: 798 Journal Issue: C; Journal ID: ISSN 0370-2693
Publisher:
Elsevier
Country of Publication:
Netherlands
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Di Vecchia, Paolo, Luna, Andrés, Naculich, Stephen G., Russo, Rodolfo, Veneziano, Gabriele, and White, Chris D. A tale of two exponentiations in N = 8 supergravity. Netherlands: N. p., 2019. Web. doi:10.1016/j.physletb.2019.134927.
Di Vecchia, Paolo, Luna, Andrés, Naculich, Stephen G., Russo, Rodolfo, Veneziano, Gabriele, & White, Chris D. A tale of two exponentiations in N = 8 supergravity. Netherlands. doi:10.1016/j.physletb.2019.134927.
Di Vecchia, Paolo, Luna, Andrés, Naculich, Stephen G., Russo, Rodolfo, Veneziano, Gabriele, and White, Chris D. Fri . "A tale of two exponentiations in N = 8 supergravity". Netherlands. doi:10.1016/j.physletb.2019.134927.
@article{osti_1561340,
title = {A tale of two exponentiations in N = 8 supergravity},
author = {Di Vecchia, Paolo and Luna, Andrés and Naculich, Stephen G. and Russo, Rodolfo and Veneziano, Gabriele and White, Chris D.},
abstractNote = {The structure of scattering amplitudes in supergravity theories continues to be of interest. Recently, the amplitude for 2→2 scattering in N=8 supergravity was presented at three-loop order for the first time. The result can be written in terms of an exponentiated one-loop contribution, modulo a remainder function which is free of infrared singularities, but contains leading terms in the high energy Regge limit. We explain the origin of these terms from a well-known, unitarity-restoring exponentiation of the high-energy gravitational S-matrix in impact-parameter space. Furthermore, we predict the existence of similar terms in the remainder function at all higher loop orders. Our results provide a non-trivial cross-check of the recent three-loop calculation, and a necessary consistency constraint for any future calculation at higher loops.},
doi = {10.1016/j.physletb.2019.134927},
journal = {Physics Letters B},
number = C,
volume = 798,
place = {Netherlands},
year = {2019},
month = {11}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.1016/j.physletb.2019.134927

Citation Metrics:
Cited by: 7 works
Citation information provided by
Web of Science

Save / Share: