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Title: An effective description of dark matter and dark energy in the mildly non-linear regime

Journal Article · · Journal of Cosmology and Astroparticle Physics
 [1];  [2];  [3]
  1. Stanford Univ., Stanford, CA (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States); Univ. Paris Saclay, Gif-sur-Yvette (France)
  2. Institute for Research in Fundamental Sciences (IPM), Tehran (Iran)
  3. Stanford Univ., Stanford, CA (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States)
+ Show Author Affiliations

In the next few years, we are going to probe the low-redshift universe with unprecedented accuracy. Among the various fruits that this will bear, it will greatly improve our knowledge of the dynamics of dark energy, though for this there is a strong theoretical preference for a cosmological constant. We assume that dark energy is described by the so-called Effective Field Theory of Dark Energy, which assumes that dark energy is the Goldstone boson of time translations. Such a formalism makes it easy to ensure that our signatures are consistent with well-established principles of physics. Since most of the information resides at high wavenumbers, it is important to be able to make predictions at the highest wavenumber that is possible. Furthermore, the Effective Field Theory of Large-Scale Structure (EFTofLSS) is a theoretical framework that has allowed us to make accurate predictions in the mildly non-linear regime. In this paper, we derive the non-linear equations that extend the EFTofLSS to include the effect of dark energy both on the matter fields and on the biased tracers. For the specific case of clustering quintessence, we then perturbatively solve to cubic order the resulting non-linear equations and construct the one-loop power spectrum of the total density contrast.

Research Organization:
Stanford Univ., CA (United States); SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), High Energy Physics (HEP)
Grant/Contract Number:
SC0008078; AC02-76SF00515
OSTI ID:
1491169
Alternate ID(s):
OSTI ID: 1369465
Journal Information:
Journal of Cosmology and Astroparticle Physics, Vol. 2017, Issue 05; ISSN 1475-7516
Publisher:
Institute of Physics (IOP)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 24 works
Citation information provided by
Web of Science

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Cited By (6)

Assessing non-linear models for galaxy clustering III: theoretical accuracy for stage IV surveys journal October 2019
Dark energy and modified gravity in the Effective Field Theory of Large-Scale Structure journal April 2018
Dark Energy and Modified Gravity in the Effective Field Theory of Large-Scale Structure text January 2017
Tree-Level Bispectrum in the Effective Field Theory of Large-Scale Structure extended to Massive Neutrinos text January 2018
Efficient Cosmological Analysis of the SDSS/BOSS data from the Effective Field Theory of Large-Scale Structure text January 2019
Violation of the consistency relations for large-scale structure with dark energy text January 2019

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Related Subjects

79 ASTRONOMY AND ASTROPHYSICS
cosmological parameters from LSS
dark energy theory
dark matter theory
power spectrum