Causality implies inflationary back-reaction

A bstract There is a widespread belief among inflationary cosmologists that a local observer cannot sense super-horizon gravitons. The argument goes that a local observer would subsume super-horizon gravitons into a redefinition of his coordinate system. We show that adopting this view for pure grav...

Full description

Saved in:
Bibliographic Details
Published in:The journal of high energy physics 2017-07, Vol.2017 (7), p.1-17, Article 37
Main Authors: Basu, S., Tsamis, N. C., Woodard, R. P.
Format: Article
Language:English
Subjects:
Classical and Quantum Gravitation
Cosmology of Theories beyond the SM
Elementary Particles
Gravitation
Gravitons
High energy physics
Models of Quantum Gravity
Physics
Physics and Astronomy
Quantum Field Theories
Quantum Field Theory
Quantum Physics
Regular Article - Theoretical Physics
Relativity Theory
String Theory
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A bstract There is a widespread belief among inflationary cosmologists that a local observer cannot sense super-horizon gravitons. The argument goes that a local observer would subsume super-horizon gravitons into a redefinition of his coordinate system. We show that adopting this view for pure gravity on de Sitter background leads to time variation in the Hubble parameter measured by a local observer. It also leads to a violation of the gravitational field equation R = 4Λ because that equation is obeyed by the full metric, rather than the one which has been cleansed of super-horizon modes.
ISSN:1029-8479
1029-8479
DOI:10.1007/JHEP07(2017)037