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Title: UV cancellations in gravity loop integrands

Abstract

In this work we explore the properties of four-dimensional gravity integrands at large loop momenta. This analysis can not be done directly for the full off-shell integrand but only becomes well-defined on cuts that allow us to unambiguously specify labels for the loop variables. The ultraviolet region of scattering amplitudes originates from poles at infinity of the loop integrands and we show that in gravity these integrands conceal a number of surprising features. In particular, certain poles at infinity are absent which requires a conspiracy between individual Feynman integrals contributing to the amplitude. We suspect that this non-trivial behavior is a consequence of yet-to-be found symmetry or a hidden property of gravity amplitudes.

Authors:
ORCiD logo [1];  [2]
  1. Stanford Univ., Stanford, CA (United States)
  2. Univ. of California, Davis, CA (United States)
Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1506959
Grant/Contract Number:  
AC02-76SF00515
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: 2; Journal ID: ISSN 1029-8479
Publisher:
Springer Berlin
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Scattering Amplitudes; Extended Supersymmetry; Supergravity Models

Citation Formats

Herrmann, Enrico, and Trnka, Jaroslav. UV cancellations in gravity loop integrands. United States: N. p., 2019. Web. doi:10.1007/jhep02(2019)084.
Herrmann, Enrico, & Trnka, Jaroslav. UV cancellations in gravity loop integrands. United States. doi:10.1007/jhep02(2019)084.
Herrmann, Enrico, and Trnka, Jaroslav. Thu . "UV cancellations in gravity loop integrands". United States. doi:10.1007/jhep02(2019)084. https://www.osti.gov/servlets/purl/1506959.
@article{osti_1506959,
title = {UV cancellations in gravity loop integrands},
author = {Herrmann, Enrico and Trnka, Jaroslav},
abstractNote = {In this work we explore the properties of four-dimensional gravity integrands at large loop momenta. This analysis can not be done directly for the full off-shell integrand but only becomes well-defined on cuts that allow us to unambiguously specify labels for the loop variables. The ultraviolet region of scattering amplitudes originates from poles at infinity of the loop integrands and we show that in gravity these integrands conceal a number of surprising features. In particular, certain poles at infinity are absent which requires a conspiracy between individual Feynman integrals contributing to the amplitude. We suspect that this non-trivial behavior is a consequence of yet-to-be found symmetry or a hidden property of gravity amplitudes.},
doi = {10.1007/jhep02(2019)084},
journal = {Journal of High Energy Physics (Online)},
number = 2,
volume = 2019,
place = {United States},
year = {2019},
month = {2}
}

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Cited by: 2 works
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    Works referencing / citing this record:

    The two-loop five-point amplitude in N $$ \mathcal{N} $$ = 8 supergravity
    journal, March 2019

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