scholarly journals Fast large scale structure perturbation theory using one-dimensional fast Fourier transforms

2016 ◽  
Vol 93 (10) ◽  
Author(s):  
Marcel Schmittfull ◽  
Zvonimir Vlah ◽  
Patrick McDonald
Keyword(s):  
Perturbation Theory ◽  
Large Scale ◽  
Fourier Transforms ◽  
Large Scale Structure ◽  
Fast Fourier Transforms ◽  
Scale Structure ◽  
One Dimensional

Effective Field Theory of Large-Scale Structure

2020 ◽  
pp. 415-478
Author(s):  
Tobias Baldauf
Keyword(s):  
Field Theory ◽  
Perturbation Theory ◽  
Effective Field Theory ◽  
Random Fields ◽  
Large Scale ◽  
Large Scale Structure ◽  
Gaussian Random Fields ◽  
Effective Field ◽  
Scale Structure ◽  
Linear Perturbation Theory

The lectures featured in this chapter review the observables relevant to the large-scale structure (LSS) of our Universe. The chapter introduces an effective field theory (EFT) that allows us to analytically describe the growth of fluctuations into the non-linear era, with uncertainties better controlled than in classical linear perturbation theory. Topics covered in the chapter include random fields in three-dimensional space, Fourier space conventions, the shape of the matter power spectrum, Gaussian random fields, estimators and cosmic variance, dynamics in the Newtonian regime, a perturbative solution of the fluid equations, the EFT approach, the Lagrangian perturbation theory, biased tracers, and redshift space distortions.

scholarly journals A coarse grained perturbation theory for the Large Scale Structure, with cosmology and time independence in the UV

2014 ◽  
Vol 2014 (09) ◽  
pp. 047-047 ◽  
Author(s):  
Alessandro Manzotti ◽  
Marco Peloso ◽  
Massimo Pietroni ◽  
Matteo Viel ◽  
Francisco Villaescusa-Navarro
Keyword(s):  
Perturbation Theory ◽  
Large Scale ◽  
Large Scale Structure ◽  
Scale Structure ◽  
Coarse Grained

scholarly journals Time-sliced perturbation theory for large scale structure I: general formalism

2016 ◽  
Vol 2016 (07) ◽  
pp. 052-052 ◽  
Author(s):  
Diego Blas ◽  
Mathias Garny ◽  
Mikhail M. Ivanov ◽  
Sergey Sibiryakov
Keyword(s):  
Perturbation Theory ◽  
Large Scale ◽  
Large Scale Structure ◽  
Scale Structure

scholarly journals Grid-based calculation for perturbation theory of large-scale structure

2018 ◽  
Vol 98 (10) ◽  
Author(s):  
Atsushi Taruya ◽  
Takahiro Nishimichi ◽  
Donghui Jeong
Keyword(s):  
Perturbation Theory ◽  
Large Scale ◽  
Large Scale Structure ◽  
Scale Structure ◽  
Grid Based
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