No Slip CMB
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Date
2018-10-29
Authors
Brush, Micah
Linder, Eric V.
Zumalacárregui, Miguel
Journal Title
Journal ISSN
Volume Title
Publisher
NURIS; Energetic Cosmos Laboratory
Abstract
No Slip Gravity is a simple modified gravity theory with only one free function and the interesting characteristic that -- unlike many modified gravity theories -- it suppresses growth. This allows it to fit current redshift space distortion and σ8 mass fluctuation amplitude data better than ΛCDM in general relativity, while retaining a ΛCDM background expansion and hence distances. Since it has no gravitational slip it alters equally CMB lensing and matter density growth, and in addition affects the CMB gravitational wave B-mode polarization power spectrum. We investigate and compute the effects of No Slip Gravity for CMB lensing and B-modes, and present a simple analytic approximation. Using a Monte Carlo analysis, we place constraints on the theory from current CMB data.
Description
Energetic Cosmos Laboratory. ECL Publication, 2019
Keywords
The 2nd international conference of the Energetic Cosmos Laboratory (ECL), Energetic Cosmos Laboratory (ECL), ECL19
Citation
Brush, M., Linder, E.V. & Miguel Zumalacárregui, No Slip CMB. The 2nd international conference of the Energetic Cosmos Laboratory (ECL) at Nazarbayev University. Retrieved from https://arxiv.org/pdf/1810.12337.pdf