Journal article 1385 views 167 downloads
Loop amplitudes in an extended gravity theory
,
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
-
PDF | Version of Record
Released under the terms of a Creative Commons Attribution License (CC-BY).
Download (297.88KB)
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....
| 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 |
| 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. 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. |
|---|---|
| College: |
Faculty of Science and Engineering |
| Start Page: |
41 |
| End Page: |
47 |