Large logarithms from quantum gravitational corrections to a massless, minimally coupled scalar on de Sitter

Drazen Glavan; Shun-Pei Miao; Tom Prokopec; Richard Paul Woodard

doi:10.1007/JHEP03(2022)088

Large logarithms from quantum gravitational corrections to a massless, minimally coupled scalar on de Sitter

Drazen Glavan, Shun-Pei Miao, Tom Prokopec, Richard Paul Woodard

Research output: Contribution to journal › Article › Academic › peer-review

Abstract

We consider single graviton loop corrections to the effective field equation of a massless, minimally coupled scalar on de Sitter background in the simplest gauge. We find a large temporal logarithm in the approach to freeze-in at late times, but no correction to the feeze-in amplitude. We also find a large spatial logarithm (at large distances) in the scalar potential generated by a point source, which can be explained using the renormalization group with one of the higher derivative counterterms regarded as a curvature-dependent field strength renormalization. We discuss how these results set the stage for a project to purge gauge dependence by including quantum gravitational corrections to the source which disturbs the effective field and to the observer who measures it.

Original language	English
Article number	88
Pages (from-to)	1-23
Number of pages	23
Journal	Journal of High Energy Physics
Volume	2022
Issue number	3
DOIs	https://doi.org/10.1007/JHEP03(2022)088
Publication status	Published - 14 Mar 2022

Keywords

Effective field theories
Models of Quantum Gravity
Cosmology of Theories beyond the SM
renormalization group

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JHEP03(2022)088Final published version, 481 KBLicence: CC BY

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abstract = "We consider single graviton loop corrections to the effective field equation of a massless, minimally coupled scalar on de Sitter background in the simplest gauge. We find a large temporal logarithm in the approach to freeze-in at late times, but no correction to the feeze-in amplitude. We also find a large spatial logarithm (at large distances) in the scalar potential generated by a point source, which can be explained using the renormalization group with one of the higher derivative counterterms regarded as a curvature-dependent field strength renormalization. We discuss how these results set the stage for a project to purge gauge dependence by including quantum gravitational corrections to the source which disturbs the effective field and to the observer who measures it.",

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AU - Woodard, Richard Paul

PY - 2022/3/14

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N2 - We consider single graviton loop corrections to the effective field equation of a massless, minimally coupled scalar on de Sitter background in the simplest gauge. We find a large temporal logarithm in the approach to freeze-in at late times, but no correction to the feeze-in amplitude. We also find a large spatial logarithm (at large distances) in the scalar potential generated by a point source, which can be explained using the renormalization group with one of the higher derivative counterterms regarded as a curvature-dependent field strength renormalization. We discuss how these results set the stage for a project to purge gauge dependence by including quantum gravitational corrections to the source which disturbs the effective field and to the observer who measures it.

AB - We consider single graviton loop corrections to the effective field equation of a massless, minimally coupled scalar on de Sitter background in the simplest gauge. We find a large temporal logarithm in the approach to freeze-in at late times, but no correction to the feeze-in amplitude. We also find a large spatial logarithm (at large distances) in the scalar potential generated by a point source, which can be explained using the renormalization group with one of the higher derivative counterterms regarded as a curvature-dependent field strength renormalization. We discuss how these results set the stage for a project to purge gauge dependence by including quantum gravitational corrections to the source which disturbs the effective field and to the observer who measures it.

KW - Effective field theories

KW - Models of Quantum Gravity

KW - Cosmology of Theories beyond the SM

KW - renormalization group

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JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

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Large logarithms from quantum gravitational corrections to a massless, minimally coupled scalar on de Sitter

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