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Title: The IR-resummed Effective Field Theory of Large Scale Structures

Journal Article · · Journal of Cosmology and Astroparticle Physics
 [1];  [2]
  1. Stanford Institute for Theoretical Physics, Stanford University, 382 Via Pueblo Mall, Stanford, CA 94305, U.S.A (United States)
  2. School of Natural Sciences, Institute for Advanced Study, 1 Einstein Drive, Princeton, NJ 08540 (United States)
+ Show Author Affiliations

We present a new method to resum the effect of large scale motions in the Effective Field Theory of Large Scale Structures. Because the linear power spectrum in ΛCDM is not scale free the effects of the large scale flows are enhanced. Although previous EFT calculations of the equal-time density power spectrum at one and two loops showed a remarkable agreement with numerical results, they also showed a 2% residual which appeared related to the BAO oscillations. We show that this was indeed the case, explain the physical origin and show how a Lagrangian based calculation removes this differences. We propose a simple method to upgrade existing Eulerian calculations to effectively make them Lagrangian and compare the new results with existing fits to numerical simulations. Our new two-loop results agrees with numerical results up to k∼ 0.6 h Mpc{sup −1} to within 1% with no oscillatory residuals. We also compute power spectra involving momentum which is significantly more affected by the large scale flows. We show how keeping track of these velocities significantly enhances the UV reach of the momentum power spectrum in addition to removing the BAO related residuals. We compute predictions for the real space correlation function around the BAO scale and investigate its sensitivity to the EFT parameters and the details of the resummation technique.

OSTI ID:
22381995
Journal Information:
Journal of Cosmology and Astroparticle Physics, Vol. 2015, Issue 02; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 1475-7516
Country of Publication:
United States
Language:
English

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Cited By (44)

The Supersymmetric Effective Field Theory of Inflation journal March 2017
The bispectrum in the Effective Field Theory of Large Scale Structure journal May 2015
Analytic prediction of baryonic effects from the EFT of large scale structures journal May 2015
The effect of massive neutrinos on the BAO peak journal July 2015
A Lagrangian effective field theory journal September 2015
The one-loop matter bispectrum in the Effective Field Theory of Large Scale Structures journal October 2015
Bias in the effective field theory of large scale structures journal November 2015
Cosmological perturbation theory in 1+1 dimensions journal January 2016
On the reach of perturbative descriptions for dark matter displacement fields journal March 2016
Perturbation theory, effective field theory, and oscillations in the power spectrum journal March 2016
Precision comparison of the power spectrum in the EFTofLSS with simulations journal May 2016
Time-sliced perturbation theory II: baryon acoustic oscillations and infrared resummation journal July 2016
Time-sliced perturbation theory for large scale structure I: general formalism journal July 2016
The Gaussian streaming model and convolution Lagrangian effective field theory journal December 2016
Efficient exploration of cosmology dependence in the EFT of LSS journal April 2017
The matter power spectrum in redshift space using effective field theory journal November 2017
Dark energy and modified gravity in the Effective Field Theory of Large-Scale Structure journal April 2018
Infrared resummation for biased tracers in redshift space journal July 2018
The effective field theory of large scale structure at three loops journal November 2019
Measuring neutrino masses with large-scale structure: Euclid forecast with controlled theoretical error journal November 2019
Detecting baryon acoustic oscillations in dark matter from kinematic weak lensing surveys journal May 2019
Modeling biased tracers at the field level journal August 2019
Matter bispectrum of large-scale structure: Three-dimensional comparison between theoretical models and numerical simulations journal April 2016
Reducing the two-loop large-scale structure power spectrum to low-dimensional, radial integrals journal November 2016
EFT of large scale structures in redshift space journal March 2018
On the soft limit of the large scale structure power spectrum: UV dependence text January 2015
The Hunt for Primordial Interactions in the Large-Scale Structures of the Universe journal August 2019
On the soft limit of the large scale structure power spectrum: UV dependence journal November 2015
The effective field theory of large scale structure at three loops text January 2019
The Effective Field Theory of Large Scale Structure at Three Loops text January 2019
The One-Loop Matter Bispectrum in the Effective Field Theory of Large Scale Structures text January 2014
A Lagrangian effective field theory text January 2015
The Effective Field Theory of Large Scale Structure at Two Loops: the apparent scale dependence of the speed of sound text January 2015
Precision Comparison of the Power Spectrum in the EFTofLSS with Simulations text January 2015
Perturbation theory, effective field theory, and oscillations in the power spectrum text January 2015
Open EFTs, IR Effects and Late-Time Resummations: Systematic Corrections in Stochastic Inflation text January 2015
Time-Sliced Perturbation Theory for Large Scale Structure I: General Formalism text January 2015
FFT-PT: Reducing the two-loop large-scale structure power spectrum to low-dimensional radial integrals text January 2016
The Supersymmetric Effective Field Theory of Inflation text January 2016
The matter power spectrum in redshift space using effective field theory text January 2017
Dark Energy and Modified Gravity in the Effective Field Theory of Large-Scale Structure text January 2017
Infrared Resummation for Biased Tracers in Redshift Space text January 2018
The Effective Field Theory of Large Scale Structure at Three Loops text January 2019
Bayesian large-scale structure inference and cosmic web analysis preprint January 2015

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Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
CORRELATION FUNCTIONS
FIELD THEORIES
FORECASTING
LAGRANGIAN FUNCTION
ORIGIN
POWER DENSITY
SENSITIVITY
SPACE
SPECTRA
VELOCITY