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Cosmological perturbations in massive gravity with doubly coupled matter
KTH, Centres, Nordic Institute for Theoretical Physics NORDITA. Stockholm University, Sweden; AlbaNova University Centre, Sweden .
2015 (English)In: Journal of Cosmology and Astroparticle Physics, ISSN 1475-7516, E-ISSN 1475-7516, no 2, 022Article in journal (Refereed) Published
Abstract [en]

We investigate the cosmological perturbations around FLRW solutions to nonlinear massive gravity with a new effective coupling to matter proposed recently. Unlike the case with minimal matter coupling, all five degrees of freedom in the gravity sector propagate on generic self-accelerating FLRW backgrounds. We study the stability of the cosmological solutions and put constraints on the parameters of the theory by demanding the correct sign for the kinetic terms for scalar, vector and tensor perturbations.

Place, publisher, year, edition, pages
2015. no 2, 022
Keyword [en]
modified gravity, cosmological perturbation theory, gravity
National Category
Astronomy, Astrophysics and Cosmology
Identifiers
URN: urn:nbn:se:kth:diva-165232DOI: 10.1088/1475-7516/2015/02/022ISI: 000351502100023Scopus ID: 2-s2.0-84923651966OAI: oai:DiVA.org:kth-165232DiVA: diva2:809739
Note

QC 20150505

Available from: 2015-05-05 Created: 2015-04-24 Last updated: 2017-12-04Bibliographically approved

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