No Slip Gravity
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Date
2018-01-04
Authors
Linder, Eric V.
Journal Title
Journal ISSN
Volume Title
Publisher
NURIS; Energetic Cosmos Laboratory
Abstract
A subclass of the Horndeski modified gravity theory we call No Slip Gravity has particularly interesting properties: 1) a speed of gravitational wave propagation equal to the speed of light, 2) equality between the effective gravitational coupling strengths to matter and light, G matter and G light, hence no slip between the metric potentials, yet difference from Newton's constant, and 3) suppressed growth to give better agreement with galaxy clustering observations. We explore the characteristics and implications of this theory, and project observational constraints. We also give a simple expression for the ratio of the gravitational wave standard siren distance to the photon standard candle distance, in this theory and others, and enable a direct comparison of modified gravity in structure growth and in gravitational waves, an important crosscheck.
Description
Energetic Cosmos Laboratory. ECL Publications
Keywords
The 2nd international conference of the Energetic Cosmos Laboratory (ECL), ECL19, Energetic Cosmos Laboratory (ECL)
Citation
Linder, E.V. (2018). No Slip Gravity. The 2nd international conference of the Energetic Cosmos Laboratory (ECL) at Nazarbayev University. Retrieved from https://arxiv.org/pdf/1801.01503.pdf