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A tale of two expon...
A tale of two exponentiations in N=8 supergravity
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- Di Vecchia, Paolo (författare)
- Stockholms universitet,KTH,Nordic Institute for Theoretical Physics NORDITA,The Niels Bohr Institute, University of Copenhagen, Blegdamsvej 17, Copenhagen, DK-2100, Denmark,Nordiska institutet för teoretisk fysik (Nordita)
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- Luna, A. (författare)
- Mani L. Bhaumik Institute for Theoretical Physics, Department of Physics and Astronomy, University of California at Los Angeles, CA 90095, United States
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- Naculich, S. G. (författare)
- Department of Physics, Bowdoin College, Brunswick, ME 04011, United States
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- Russo, R. (författare)
- Centre for Research in String Theory, School of Physics and Astronomy, Queen Mary University of London, 327 Mile End Road, London, E1 4NS, United Kingdom
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- Veneziano, G. (författare)
- Theory Department, CERN, Geneva 23, CH-1211, Switzerland.;Collége de France, 11 place M. Berthelot, Paris, 75005, France
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- White, C. D. (författare)
- Centre for Research in String Theory, School of Physics and Astronomy, Queen Mary University of London, 327 Mile End Road, London, E1 4NS, United Kingdom
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(creator_code:org_t)
- Elsevier, 2019
- 2019
- Engelska.
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Ingår i: Physics Letters B. - : Elsevier. - 0370-2693 .- 1873-2445. ; 798
- Relaterad länk:
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https://doi.org/10.1...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
Ämnesord
Stäng
- 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.
Ämnesord
- NATURVETENSKAP -- Fysik -- Annan fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Other Physics Topics (hsv//eng)
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Nyckelord
- Teoretisk fysik
- Theoretical Physics
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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