Using perturbative least action to recover cosmological initial conditions

David M. Goldberg, David N. Spergel

Research output: Contribution to journalArticlepeer-review

13 Scopus citations


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 languageEnglish (US)
Pages (from-to)21-29
Number of pages9
JournalAstrophysical Journal
Issue number1 PART 1
StatePublished - Nov 20 2000

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science


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


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