Limits on wCDM from the EFTofLSS with the PyBird code
Abstract
We apply the Effective Field Theory of Large-Scale Structure to analyze the wCDM cosmological model. By using the full shape of the power spectrum and the BAO post-reconstruction measurements from BOSS, the Supernovae from Pantheon, and a prior from BBN, we set the competitive CMB-independent limit w=-1.046-0.052+0.055 at 68% C.L. After adding the Planck CMB data, we find w=-1.023-0.030+0.033 at 68% C.L. Our results are obtained using PyBird, a new, fast Python-based code which we make publicly available.
- Publication:
-
Journal of Cosmology and Astroparticle Physics
- Pub Date:
- January 2021
- DOI:
- 10.1088/1475-7516/2021/01/006
- arXiv:
- arXiv:2003.07956
- Bibcode:
- 2021JCAP...01..006D
- Keywords:
-
- Astrophysics - Cosmology and Nongalactic Astrophysics;
- General Relativity and Quantum Cosmology;
- High Energy Physics - Phenomenology;
- High Energy Physics - Theory
- E-Print:
- 27 pages, 6 tables, 8 figures. v2: 33 pages, 8 tables, 9 figures, matches JCAP published version. The PyBird code is available at https://github.com/pierrexyz/pybird