Loop amplitudes in an extended gravity theory

Dunbar, David; Godwin, John; Jehu, Guy; Perkins, Warren

doi:10.1016/j.physletb.2018.02.046

Journal article 1093 views 122 downloads

Loop amplitudes in an extended gravity theory

David Dunbar

, John Godwin, Guy Jehu, Warren Perkins

Physics Letters B, Volume: 780, Pages: 41 - 47

Swansea University Authors: David Dunbar , John Godwin, Guy Jehu, Warren Perkins

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DOI (Published version): 10.1016/j.physletb.2018.02.046

Abstract

We extend the $S$-matrix of gravity by the addition of the minimal three-point amplitude or equivalently adding $R^3$ terms to the Lagrangian. We demonstrate how Unitarity can be used to simply examine the renormalisability of this theory and determine the $R^4$ counter-terms that arise at one-loop....

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Published in:	Physics Letters B
ISSN:	0370-2693
Published:	Elsevier BV 2018
Online Access:	Check full text
URI:	https://cronfa.swan.ac.uk/Record/cronfa36776
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first_indexed	2017-11-15T14:25:22Z
last_indexed	2020-07-28T18:55:51Z
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spelling	2020-07-28T16:37:46.9519302 v2 36776 2017-11-15 Loop amplitudes in an extended gravity theory b1c3d2c841af9c37f7deba55f8b3bd0c 0000-0003-2433-1675 David Dunbar David Dunbar true false a27b223e008f197377d527a2eca5dcb2 John Godwin John Godwin true false 4e327d98657170ca39e3866d64504bf9 Guy Jehu Guy Jehu true false 4bcbb4b448d52d3d7290d5dcd804027e 0000-0002-4434-8178 Warren Perkins Warren Perkins true false 2017-11-15 SPH We extend the $S$-matrix of gravity by the addition of the minimal three-point amplitude or equivalently adding $R^3$ terms to the Lagrangian. We demonstrate how Unitarity can be used to simply examine the renormalisability of this theory and determine the $R^4$ counter-terms that arise at one-loop. We find that the combination of $R^4$ terms that arise in the extended theory is complementary to the $R^4$ counter-term associated with supersymmetric Lagrangians. Journal Article Physics Letters B 780 41 47 Elsevier BV 0370-2693 10 5 2018 2018-05-10 10.1016/j.physletb.2018.02.046 COLLEGE NANME Physics COLLEGE CODE SPH Swansea University 2020-07-28T16:37:46.9519302 2017-11-15T12:59:03.5853160 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Physics David Dunbar 0000-0003-2433-1675 1 John Godwin 2 Guy Jehu 3 Warren Perkins 0000-0002-4434-8178 4 0036776-20032018113009.pdf 36776.pdf 2018-03-20T11:30:09.0970000 Output 324919 application/pdf Version of Record true Released under the terms of a Creative Commons Attribution License (CC-BY). true eng http://creativecommons.org/licenses/by/4.0/
title	Loop amplitudes in an extended gravity theory
spellingShingle	Loop amplitudes in an extended gravity theory David Dunbar John Godwin Guy Jehu Warren Perkins
title_short	Loop amplitudes in an extended gravity theory
title_full	Loop amplitudes in an extended gravity theory
title_fullStr	Loop amplitudes in an extended gravity theory
title_full_unstemmed	Loop amplitudes in an extended gravity theory
title_sort	Loop amplitudes in an extended gravity theory
author_id_str_mv	b1c3d2c841af9c37f7deba55f8b3bd0c a27b223e008f197377d527a2eca5dcb2 4e327d98657170ca39e3866d64504bf9 4bcbb4b448d52d3d7290d5dcd804027e
author_id_fullname_str_mv	b1c3d2c841af9c37f7deba55f8b3bd0c_*_David Dunbar a27b223e008f197377d527a2eca5dcb2__John Godwin 4e327d98657170ca39e3866d64504bf9__Guy Jehu 4bcbb4b448d52d3d7290d5dcd804027e_*_Warren Perkins
author	David Dunbar John Godwin Guy Jehu Warren Perkins
author2	David Dunbar John Godwin Guy Jehu Warren Perkins
format	Journal article
container_title	Physics Letters B
container_volume	780
container_start_page	41
publishDate	2018
institution	Swansea University
issn	0370-2693
doi_str_mv	10.1016/j.physletb.2018.02.046
publisher	Elsevier BV
college_str	Faculty of Science and Engineering
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hierarchy_top_title	Faculty of Science and Engineering
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department_str	School of Biosciences, Geography and Physics - Physics{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Biosciences, Geography and Physics - Physics
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description	We extend the $S$-matrix of gravity by the addition of the minimal three-point amplitude or equivalently adding $R^3$ terms to the Lagrangian. We demonstrate how Unitarity can be used to simply examine the renormalisability of this theory and determine the $R^4$ counter-terms that arise at one-loop. We find that the combination of $R^4$ terms that arise in the extended theory is complementary to the $R^4$ counter-term associated with supersymmetric Lagrangians.
published_date	2018-05-10T03:46:07Z
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score	10.999524

Loop amplitudes in an extended gravity theory

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