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Quantum scalar corrections to the gravitational potentials on de Sitter background. (English) Zbl 1388.83138
Summary: We employ the graviton self-energy induced by a massless, minimally coupled (MMC) scalar on de Sitter background to compute the quantum corrections to the gravitational potentials of a static point particle with a mass \(M\). The Schwinger-Keldysh formalism is used to derive real and causal effective field equations. When evaluated at the one-loop order, the gravitational potentials exhibit a secular decrease in the observed gravitational coupling \(G\). This can also be interpreted as a (time dependent) anti-screening of the mass \(M\).

MSC:
83C45 Quantization of the gravitational field
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