Limits on clustering and smooth quintessence from the EFTofLSS
- ,
- Yaniv Donath(,)
- ETH, Zurich (main) and
- Stanford U., ITP and
- KIPAC, Menlo Park and
- SLAC and
- Stanford U.
- Leonardo Senatore(,)
- Stanford U., ITP and
- KIPAC, Menlo Park and
- SLAC and
- Stanford U.
41 pages
Published in:
- JCAP 03 (2024) 032
- Published: Mar 14, 2024
e-Print:
- 2012.07554 [astro-ph.CO]
View in:
Citations per year
Abstract: (IOP)
We apply the Effective Field Theory of Large-Scale Structure (EFTofLSS) to analyzecosmological models with clustering quintessence, which allows us to consistently describe theparameter region in which the quintessence equation of state w < -1. First, we extend thedescription of biased tracers in redshift space to the presence of clustering quintessence, andcompute the one-loop power spectrum. We solve the EFTofLSS equations using the exact timedependence, which is relevant to obtain unbiased constraints. Then, fitting the full shape of BOSSpre-reconstructed power spectrum measurements, the BOSS post-reconstruction BAO measurements, BAOmeasurements from 6DF/MGS and eBOSS, the Supernovae from Pantheon, and a prior from BBN, we boundthe clustering quintessence equation of state parameter w = -1.011 at 68%C.L. Further combining with Planck, we obtain w = -1.028 at 68% C.L. Wealso obtain constraints on smooth quintessence, in the physical regime w ≥ -1: combining alldatasets, we get -1 ≤ w < -0.979 at 68% C.L. These results strongly support a cosmological constant.Note:
- 41 pages, 10 figures. v2: minor modifications, added references, matches JCAP published version
- cosmological parameters from LSS
- power spectrum
- dark energy theory
- galaxy clustering
- nucleosynthesis: big bang
- quintessence
- equation of state
- galaxy: power spectrum
- effective field theory
- cosmological constant
References(92)
Figures(12)
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