Journal article 1640 views 256 downloads
Two-loop gravity amplitudes from four dimensional unitarity
David Dunbar 
,
Guy R. Jehu,
Warren Perkins
,
Guy R. Jehu,
Warren Perkins
Physical Review D, Volume: 95, Issue: 4
Swansea University Authors:
David Dunbar , Warren Perkins
-
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DOI (Published version): 10.1103/PhysRevD.95.046012
Abstract
We compute the polylogarithmic parts of the two-loop four and five-graviton amplitudes where the external helicities are positive and express these in a simple compact analytic form. We use these to extract the $\ln(\mu^2)$ terms from both the four and five-point amplitudes and show that these match...
| Published in: | Physical Review D |
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| ISSN: | 2470-0010 2470-0029 |
| Published: |
2017
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| Online Access: |
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| URI: | https://cronfa.swan.ac.uk/Record/cronfa31619 |
| Abstract: |
We compute the polylogarithmic parts of the two-loop four and five-graviton amplitudes where the external helicities are positive and express these in a simple compact analytic form. We use these to extract the $\ln(\mu^2)$ terms from both the four and five-point amplitudes and show that these match the same $R^3$ counterterm. |
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| College: |
Faculty of Science and Engineering |
| Issue: |
4 |