Journal
PHYSICS LETTERS B
Volume 711, Issue 1, Pages 128-131Publisher
ELSEVIER
DOI: 10.1016/j.physletb.2012.03.070
Keywords
Renormalization group; Higher derivative gravity; Unitarity
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Fourth order derivative gravity in 3 + 1 dimensions is perturbatively renormalizable and is shown to describe a unitary theory of gravitons in a limited coupling parameter space. The running gravitational constant which includes graviton contribution is computed. Generically, gravitational Newton's constant vanishes at short distances in this perturbatively renormalizable and unitary theory. (C) 2012 Elsevier B.V. All rights reserved.
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