期刊
PHYSICAL REVIEW D
卷 90, 期 4, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.90.043513
关键词
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资金
- Dutch Foundation for Fundamental Research on Matter (FOM)
- European Research Council under the European Union [306425]
- SISSA Excellence Grant
- INFN-INDARK initiative
- European Research Council (ERC) [306425] Funding Source: European Research Council (ERC)
We introduce EFTCAMB/EFTCOSMOMC as publicly available patches to the commonly used CAMB/COSMOMC codes. We briefly describe the structure of the codes, their applicability and main features. To illustrate the use of these patches, we obtain constraints on parametrized pure effective field theory and designer f(R) models, both on ACDM and wCDM background expansion histories, using data from Planck temperature and lensing potential spectra, WMAP low-l polarization spectra (WP), and baryon acoustic oscillations (BAO). Upon inspecting the theoretical stability of the models on the given background, we find nontrivial parameter spaces that we translate into viability priors. We use different combinations of data sets to show their individual effects on cosmological and model parameters. Our data analysis results show that, depending on the adopted data sets, in the wCDM background case these viability priors could dominate the marginalized posterior distributions. Interestingly, with Planck + WP + BAO + lensing data, in f(R) gravity models, we get very strong constraints on the constant dark energy equation of state, w(0) is an element of (-1, -0.9997) (95% C. L.).
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