Planck 2015 results
Cardiff University · Université Paris-Sud · +107 more institutions
Abstract
We study the implications of Planck data for models of dark energy (DE) and modified gravity (MG), beyond the cosmological constant scenario. We start with cases where the DE only directly affects the background evolution, considering Taylor expansions of the equation of state, principal component analysis and parameterizations related to the potential of a minimally coupled DE scalar field. When estimating the density of DE at early times, we significantly improve present constraints. We then move to general parameterizations of the DE or MG perturbations that encompass both effective field theories and the phenomenology of gravitational potentials in MG models. Lastly, we test a range of specific models,…
Citation impact
- FWCI
- 67.92
- Percentile
- 100%
- References
- 255
Authors
236- PAP. A. R. AdeCorresponding
Cardiff University
- NAN. Aghanim
Université Paris-Sud, Centre National de la Recherche Scientifique, Université Paris-Saclay, Institut d'Astrophysique Spatiale
- MAM. Arnaud
Centre National de la Recherche Scientifique, Délégation Paris 7, Université Paris Cité, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Astrophysique, Instrumentation et Modélisation, CEA Paris-Saclay, Institut de Recherche sur les Lois Fondamentales de l'Univers
- MAM. Ashdown
University of Cambridge
- JAJ. Aumont
Université Paris-Sud, Centre National de la Recherche Scientifique, Université Paris-Saclay, Institut d'Astrophysique Spatiale
Topics & keywords
- Physics
- Planck
- Astrophysics
- Astronomy
Funding
- NSNational Science Foundation
- NANational Aeronautics and Space Administration
- USUK Space Agency
- WCWestern Canada Research Grid
- SFScience Foundation Ireland
- DFDeutsche ForschungsgemeinschaftAwards: TransRegio TRR33, TRR33
- PFPartnership for Advanced Computing in Europe AISBL
- CNCentre National d’Etudes SpatialesAward: IN2P3
- TTekes
- MMax-Planck-Gesellschaft
- CSChina Scholarship Council
- CNCentre National de la Recherche Scientifique
- MDMinistério da Ciência, Tecnologia e Ensino Superior
- UDUniversité de Genève
- SAScience and Technology Facilities CouncilAward: IN2P3
- FPFundação para a Ciência e a Tecnologia
- INInstitut National de Physique Nucléaire et de Physique des Particules