Large-scale structure perturbation theory without losing stream crossing
نویسندگان
چکیده
منابع مشابه
Large-Scale Structure of the Universe and Cosmological Perturbation Theory
We review the formalism and applications of non-linear perturbation theory (PT) to understanding the large-scale structure of the Universe. We first discuss the dynamics of gravitational instability, from the linear to the non-linear regime. This includes Eulerian and Lagrangian PT, non-linear approximations, and a brief description of numerical simulation techniques. We then cover the basic st...
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The generally held view that a model of large– scale structure, formed by collisionless matter in the Universe, can be based on the matter model “dust” fails in the presence of multi–stream flow, i.e., velocity dispersion. We argue that models for large–scale structure should rather be constructed for a flow which describes the average motion of a multi–stream system. We present a clearcut reas...
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ژورنال
عنوان ژورنال: Physical Review D
سال: 2018
ISSN: 2470-0010,2470-0029
DOI: 10.1103/physrevd.97.023508