Limits on wCDM from the EFTofLSS with the PyBird code

Guido D'Amico, Leonardo Senatore, Pierre Zhang
3/17/2020
astro-ph.COgr-qchep-ph

Official code: pierrexyz/pybird (38 stars, MIT, last commit 2026-05-13).

Abstract

We apply the Effective Field Theory of Large-Scale Structure to analyze the $w$CDM 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.

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Code Implementations(1)

pierrexyz/pybirdOfficial100%
MIT

Python code for Biased tracers in redshift space

3824Shell, PythonNov 11, 20195 months agoMIT

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Cite this paper

@article{damico2020limits,
  title  = {Limits on wCDM from the EFTofLSS with the PyBird code},
  author = {Guido D'Amico and Leonardo Senatore and Pierre Zhang},
  year   = {2020},
  eprint = {2003.07956},
  archivePrefix = {arXiv},
  url    = {https://arxiv.org/abs/2003.07956}
}

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