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Examples of the Vilkovisky-Dewitt effective action in one-loop quantum gravity

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Allen,  Bruce
Observational Relativity and Cosmology, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;

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Citation

Allen, B., Mc Laughlin, J. G., & Ottewill, A. C. (1992). Examples of the Vilkovisky-Dewitt effective action in one-loop quantum gravity. Physical Review D, 45(12), 4504-4513. doi:10.1103/PhysRevD.45.4504.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0013-5C86-D
Abstract
We present two examples where the contribution of one-loop gravitons to the renormalized stress-energy tensor may be calculated explicitly from both the standard and the Vilkovisky-DeWitt effective action. The renormalization is carried out using the Hadamard renormalization procedure outlined by Allen, Folacci, and Ottewill [Phys. Rev. D 38, 1069 (1988)]. The examples show that the standard and Vilkovisky-DeWitt formulations of quantum field theory lead to different physical predictions at one loop.