Third-order perturbative solutions in the Lagrangian perturbation theory with pressure

Abstract

Lagrangian perturbation theory for cosmological fluid describes structure formation in the quasi-nonlinear stage well. We present a third-order perturbative equation for Lagrangian perturbation with pressure in both the longitudinal and transverse modes. Then we derive the perturbative solution for simplest case.

11 pages, 1 figure; accepted for publication in Physical Review D

References in corpus (2)

• New Light on Dark Matter
• Correspondence between the adhesion model and the velocity dispersion for the cosmological fluid

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• The comparison of velocity distribution between Adhesion approximation and the Euler-Jeans-Newton model