Large-scale structure perturbation theory without losing stream crossing

2017/09/30 by Patrick McDonald, Zvonimir Vlah · 33 citations
Environmental Science · Physics and Astronomy · #Climate variability and models #Computer science #Cosmology and Gravitation Theories #Formalism (music) #Galaxies: Formation, Evolution, Phenomena #Nonlinear system #Perturbation (astronomy) #Perturbation theory (quantum mechanics) #Physics #Quantum mechanics #Statistical physics #astro-ph.CO

paper · pdf · doi:10.1103/physrevd.97.023508

published in Physical review. D/Physical review. D. 97(2) (American Physical Society) · added pedagogical explanation of key math trick in appendix

arxiv created 2018/01/06 · openalex publication_date 2018/01/10 · arxiv updated 2018/01/17 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/08

Abstract

This paper proposes a formalism for perturbative calculations of large scale clustering in the Universe, which includes stream crossing from the onset. This leads to significant improvement of the convergence of perturbative calculations, even for nonlinear scales.

Citations

• Cosmological perturbation theory in 1+1 dimensions
• The renormalization group and the ε expansion
• Modelling the clustering of dark matter haloes in resummed perturbation theories
• Simulations of baryon acoustic oscillations - I. Growth of large-scale density fluctuations
• What the "simple renormalization group" approach to dark matter clustering really was
• Large-Nexpansions applied to gravitational clustering
• BARYONIC ACOUSTIC OSCILLATIONS VIA THE RENORMALIZATION GROUP
• Clustering of dark matter tracers: renormalizing the bias parameters
• Relative velocity of dark matter and baryonic fluids and the formation of the first structures
• Regularized cosmological power spectrum and correlation function in modified gravity models
• The evolution of baryon density fluctuations in multicomponent cosmological simulations
• The Observed Probability Distribution Function, Power Spectrum, and Correlation Function of the Transmitted Flux in the Lyα Forest
• Non-linear power spectrum including massive neutrinos: the time-RG flow approach
• How to generate a significant effective temperature for cold dark matter, from first principles
• The Linear Theory Power Spectrum from the Lyα Forest in the Sloan Digital Sky Survey
• Baryon acoustic oscillations in 2D: Modeling redshift-space power spectrum from perturbation theory
• Lagrangian theory of gravitational instability of Friedman–Lemaître cosmologies – second-order approach: an improved model for non-linear clustering
• Resumming cosmological perturbations via the Lagrangian picture: One-loop results in real space and in redshift space
• Matter bispectrum of large-scale structure: Three-dimensional comparison between theoretical models and numerical simulations
• Constructing regularized cosmic propagators
• Dynamics of gravitational clustering
• Dynamics of gravitational clustering