Nonlinear mode-coupling of large-scale structure: Validity of perturbation theory calculation

Atsushi Taruya, Takahiro Nishimichu, Francis Bernardeau

Research output: Contribution to conferencePaperpeer-review

Abstract

Measurement of mode-coupling kernel of large-scale structure (LSS): K(k,q) qδPn1(k)/ΔP0 (q) Unlike the standard PT results, • There appears UV suppression in N-body simulation at k<<q • Discrepancy can be seen even at low-k, where standard PT can reproduce the N-body result quite well Physical origin A connection with small-scale physics (formation and merging processes of dark matter halos) Implication Check the validity and limitation for EFTofLSS → A step toward an improved prescription of LSS.

Original languageEnglish
Pages150-157
Number of pages8
Publication statusPublished - 1 Jan 2014
Externally publishedYes
Event24rd Workshop on General Relativity and Gravitation in Japan, JGRG 2014 - Chiba, Japan
Duration: 10 Nov 201414 Nov 2014

Conference

Conference24rd Workshop on General Relativity and Gravitation in Japan, JGRG 2014
Country/TerritoryJapan
CityChiba
Period10/11/1414/11/14

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