Using perturbative least action to recover cosmological initial conditions

David M. Goldberg; David N. Spergel

doi:10.1086/317182

Using perturbative least action to recover cosmological initial conditions

David M. Goldberg, David N. Spergel

Research output: Contribution to journal › Article › peer-review

13 Scopus citations

Abstract

We introduce a new method for generating initial conditions consistent with highly nonlinear observations of density and velocity fields. Using a variant of the least action method, called perturbative least action (PLA), we show that it is possible to generate several different sets of initial conditions, each of which will satisfy a set of highly nonlinear observational constraints at the present day. We then discuss a code written to test and apply this method, and present the results of several simulations.

Original language	English (US)
Pages (from-to)	21-29
Number of pages	9
Journal	Astrophysical Journal
Volume	544
Issue number	1 PART 1
DOIs	https://doi.org/10.1086/317182
State	Published - Nov 20 2000

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

Keywords

Cosmology: theory
Galaxies: kinematics and dynamics
Large-scale structure of universe
Methods: n-body simulations
Methods: numerical

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10.1086/317182

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AU - Spergel, David N.

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AB - We introduce a new method for generating initial conditions consistent with highly nonlinear observations of density and velocity fields. Using a variant of the least action method, called perturbative least action (PLA), we show that it is possible to generate several different sets of initial conditions, each of which will satisfy a set of highly nonlinear observational constraints at the present day. We then discuss a code written to test and apply this method, and present the results of several simulations.

KW - Cosmology: theory

KW - Galaxies: kinematics and dynamics

KW - Large-scale structure of universe

KW - Methods: n-body simulations

KW - Methods: numerical

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SP - 21

EP - 29

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 1 PART 1

ER -

Using perturbative least action to recover cosmological initial conditions

Abstract

All Science Journal Classification (ASJC) codes

Keywords

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