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Limits on wCDM from the EFTofLSS with the PyBird code

D'Amico, Guido·Senatore, Leonardo·Zhang, Pierre
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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.

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D'Amico, Guido, Senatore, Leonardo, Zhang, Pierre. 2021-01-04. Limits on wCDM from the EFTofLSS with the PyBird code. https://doi.org/10.1088/1475-7516%2F2021%2F01%2F006

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