Baryonic effects in the Effective Field Theory of Large-Scale Structure and an analytic recipe for lensing in CMB-S4

Abstract

Upcoming Large-Scale Structure surveys will likely become the next leading sources of cosmological information, making it crucial to have a precise understanding of the influence of baryons on cosmological observables. The Effective Field Theory of Large-Scale Structure (EFTofLSS) provides a consistent way to predict the clustering of dark matter and baryons on large scales, where their leading corrections in perturbation theory are given by a simple and calculable functional form even after the onset of baryonic processes. In this paper, we extend the two-fluid-like system up to two-loop order in perturbation theory. Along the way, we show that a new linear counterterm proportional to the relative velocity of the fluids could generically be present, but we show that its effects are expected to be small in our universe. Regardless, we show how to consistently perform perturbation theory in the presence of this new term. We find that the EFTofLSS at two-loop order can accurately account for the details of baryonic processes on large scales. We compare our results to a hydrodynamical $N$-body simulation at many redshifts and find that the counterterms associated with the leading corrections to dark matter and baryons start to differ between redshifts $z\approx 3$ and $z\approx 2$, signaling the onset of star-formation physics. We then use these fits to compute the lensing power spectrum, show that the understanding of baryonic processes will be important for analyzing CMB-S4 data, and show that the two-loop EFTofLSS accurately captures these effects for $\ell \lesssim 2000$. Our results are also potentially of interest for current and future weak lensing surveys.

arXiv comment71 pages, 23 figures, 4 tables

References in corpus (87)

• Wilkinson Microwave Anisotropy Probe (WMAP) Three Year Results: Implications for Cosmology
• Large-Scale Structure of the Universe and Cosmological Perturbation Theory
• Revising the Halofit Model for the Nonlinear Matter Power Spectrum
• Weak Gravitational Lensing of the CMB
• The physics driving the cosmic star formation history
• Planck 2018 results. VIII. Gravitational lensing
• Cosmological Non-Linearities as an Effective Fluid
• The Effective Field Theory of Cosmological Large Scale Structures
• Relative velocity of dark matter and baryonic fluids and the formation of the first structures
• The effects of galaxy formation on the matter power spectrum: A challenge for precision cosmology
• The Cosmological Analysis of the SDSS/BOSS data from the Effective Field Theory of Large-Scale Structure
• CMB-S4 Science Case, Reference Design, and Project Plan
• Cosmological Parameters from the BOSS Galaxy Power Spectrum
• Maximal freedom at minimum cost: linear large-scale structure in general modifications of gravity
• Essential Building Blocks of Dark Energy
• The Coyote Universe I: Precision Determination of the Nonlinear Matter Power Spectrum
• Second Order Power Spectrum and Nonlinear Evolution at High Redshift
• The IR-resummed Effective Field Theory of Large Scale Structures
• The Effective Theory of Quintessence: the w<-1 Side Unveiled
• The Coyote Universe II: Cosmological Models and Precision Emulation of the Nonlinear Matter Power Spectrum
• The Coyote Universe Extended: Precision Emulation of the Matter Power Spectrum
• Conformal consistency relations for single-field inflation
• Equivalence Principle and the Baryon Acoustic Peak
• A unifying description of dark energy
• Bias in the Effective Field Theory of Large Scale Structures
• The Lagrangian-space Effective Field Theory of Large Scale Structures
• The Coyote Universe III: Simulation Suite and Precision Emulator for the Nonlinear Matter Power Spectrum
• Biased Tracers and Time Evolution
• Single-Field Consistency Relations of Large Scale Structure
• Euclid preparation: II. The EuclidEmulator -- A tool to compute the cosmology dependence of the nonlinear matter power spectrum
• The Effective Field Theory of Large Scale Structures at Two Loops
• Symmetries and Consistency Relations in the Large Scale Structure of the Universe
• Conformal Symmetries of Adiabatic Modes in Cosmology
• On the Renormalization of the Effective Field Theory of Large Scale Structures
• Efficient Cosmological Analysis of the SDSS/BOSS data from the Effective Field Theory of Large-Scale Structure
• Exploring the effects of galaxy formation on matter clustering through a library of simulation power spectra
• The Bispectrum in the Effective Field Theory of Large Scale Structure
• Galilean invariance and the consistency relation for the nonlinear squeezed bispectrum of large scale structure
• An Infinite Set of Ward Identities for Adiabatic Modes in Cosmology
• The Effective Field Theory of Large Scale Structure at Two Loops: the apparent scale dependence of the speed of sound
• Spherical collapse in quintessence models with zero speed of sound
• A Simplified Approach to General Scalar-Tensor Theories
• A Consistent Effective Theory of Long-Wavelength Cosmological Perturbations
• Modeling baryonic physics in future weak lensing surveys
• Galaxy Bias and Primordial Non-Gaussianity
• The One-Loop Matter Bispectrum in the Effective Field Theory of Large Scale Structures
• The 2-loop matter power spectrum and the IR-safe integrand
• Analytic Prediction of Baryonic Effects from the EFT of Large Scale Structures
• Precision Comparison of the Power Spectrum in the EFTofLSS with Simulations
• On the Velocity in the Effective Field Theory of Large Scale Structures
• On the EFT of Large Scale Structures in Redshift Space
• Effective Theory of Large-Scale Structure with Primordial Non-Gaussianity
• Non-Gaussian Covariance of the Matter Power Spectrum in the Effective Field Theory of Large Scale Structure
• Cosmological perturbation theory in 1+1 dimensions
• On the reach of perturbative descriptions for dark matter displacement fields
• Third-Order Density Perturbation and One-Loop Power Spectrum in Dark-Energy-Dominated Universe
• Single-Field Consistency Relations of Large Scale Structure. Part II: Resummation and Redshift Space
• The Trispectrum in the Effective Field Theory of Large Scale Structure
• Resummed propagators in multi-component cosmic fluids with the eikonal approximation
• Higher-order initial conditions for mixed baryon-CDM simulations
• Cosmological structure formation with clustering quintessence
• Dark Energy and Modified Gravity in the Effective Field Theory of Large-Scale Structure
• Third-order Perturbation Theory With Non-linear Pressure
• Ward identities and consistency relations for the large scale structure with multiple species
• How closely do baryons follow dark matter on large scales?
• Matter bispectrum in cubic Galileon cosmologies
• Soft-Pion Theorems for Large Scale Structure
• The EFT of Large Scale Structures at All Redshifts: Analytical Predictions for Lensing
• Very Massive Tracers and Higher Derivative Biases
• Towards Precision Constraints on Gravity with the Effective Field Theory of Large-Scale Structure
• Cosmological perturbation theory for baryons and dark matter I: one-loop corrections in the RPT framework
• IR-safe and UV-safe integrands in the EFTofLSS with exact time dependence
• The matter power spectrum in redshift space using effective field theory
• Power spectra in the eikonal approximation with adiabatic and non-adiabatic modes
• On the reach of perturbative methods for dark matter density fields
• An effective description of dark matter and dark energy in the mildly non-linear regime
• Efficient exploration of cosmology dependence in the EFT of LSS
• Bispectrum of cosmological density perturbations in the most general second-order scalar-tensor theory
• Systematic errors in the measurement of neutrino masses due to baryonic feedback processes: Prospects for stage IV lensing surveys
• Consistency relations for large-scale structure in modified gravity and the matter bispectrum
• Matter bispectrum beyond Horndeski
• Principal Shapes and Squeezed Limits in the Effective Field Theory of Large Scale Structure
• More accurate simulations with separate initial conditions for baryons and dark matter
• Cosmological perturbations for two cold fluids in $\Lambda$CDM
• Accurate initial conditions in mixed Dark Matter--Baryon simulations
• Violation of the consistency relations for large-scale structure with dark energy
• Baryonic effects on CMB lensing and neutrino mass constraints

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