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- W270381810 abstract "We use variational methods to calculate quantum corrections in Quantum Gravity. A comparison with the effective potential calculated at quadratic order is made by means of gaussian wave functionals [R. Garattini, Vacuum energy in ultralocal metrics for TT tensors with Gaussian wave functionals, in General Relativity, Proceedings of the Forty Sixth Scottish Universities: Aberdeen 1995, eds. G.S. Hall and J.R. Pulham, Institute of Physics Publishing, Bristol, p. 409.]. The method is a particular case of the effective action for composite operators used in quantum field theory [J.M. Cornwall, R. Jackiw and E. Tomboulis, Phys.Rev.D, 8, (1974), p. 2428.]. In pure gravity the method is applied for the first time. A new effective action could be extracted from the path integral and it could serve as a model for Quantum Gravity with and without matter fields." @default.
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- W270381810 title "Variational Methods, Path Integrals and Quantum Gravity" @default.
- W270381810 doi "https://doi.org/10.1007/978-1-4899-0319-8_23" @default.
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