General Relativity and Quantum Cosmology
[Submitted on 30 Apr 2024]
Title:Alternate Computation of Gravitational Effects from a Single Loop of Inflationary Scalars
View PDF HTML (experimental)Abstract:We present a new computation of the renormalized graviton self-energy induced by a loop of massless, minimally coupled scalars on de Sitter background. Our result takes account of the need to include a finite renormalization of the cosmological constant, which was not included in the first analysis. We also avoid preconceptions concerning structure functions and instead express the result as a linear combination of 21 tensor differential operators. By using our result to quantum-correct the linearized effective field equation we derive logarithmic corrections to both the electric components of the Weyl tensor for gravitational radiation and to the two potentials which quantify the gravitational response to a static point mass.
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