Evolution of large-scale fluctuations in the early universe described by a nonlinear equation of state

Details Evolution of large-scale fluctuations in the early universe described by a nonlinear equation of state Evolution of large-scale fluctuations in the early universe described by a nonlinear equation of state

Oct 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984fiukr.......46b&link_type=abstract

Akademiia Nauk Ukrains'koi RSR, Dopovidi, Seriia A Fiziko-Matematichni ta Technichni Nauki (ISSN 0002-3531), Oct. 1984, p. 46-48

Astronomy and Astrophysics

Astronomy

Astronomical Models, Equations Of State, Fluctuation Theory, Galactic Evolution, Universe, Nonlinear Equations

Scientific paper

Reference is made to earlier studies in which attempts have been made to solve the problem of the origin of galaxies from initial inhomogeneities in the context of models of the universe with phase transitions (expanding universe models). The dynamics of these models is adequately described by a rather complex nonlinear equation of state. In the present study, the evolution of large-scale perturbations is described for the above mentioned nonlinear equation, and the result obtained is then generalized to a dependence of the form p(epsilon), where p is pressure and epsilon is fluid density.

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