Loop amplitudes in an extended gravity theory
Loop amplitudes in an extended gravity theory
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扩展重力理论中的环振幅
DOI:
10.1016/j.physletb.2018.02.046
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发表时间:
2018
影响因子:
4.4
通讯作者:
Dunbar D
中科院分区:
文献类型:
--
作者:
Dunbar D
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.