Cosmological fluid dynamics in the Schrödinger formalism

Details Cosmological fluid dynamics in the Schrödinger formalism Cosmological fluid dynamics in the Schrödinger formalism

Mar 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010mnras.402.2491j&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Volume 402, Issue 4, pp. 2491-2502.

Astronomy and Astrophysics

Astronomy

1

Galaxies: Clusters: General, Cosmology: Theory

Scientific paper

We investigate the dynamics of a cosmological dark matter fluid in the Schrödinger formulation, seeking to evaluate the approach as a potential tool for theorists. We find simple wave-mechanical solutions of the equations for the cosmological homogeneous background evolution of the dark matter field, and use them to obtain a piecewise analytic solution for the evolution of a compensated spherical overdensity. We analyse this solution from a `quantum mechanical' viewpoint, and establish the correct boundary conditions satisfied by the wavefunction. Using techniques from multiparticle quantum mechanics, we establish the equations governing the evolution of multiple fluids and then solve them numerically in such a system. Our results establish the viability of the Schrödinger formulation as a genuine alternative to standard methods in certain contexts, and a novel way to model multiple fluids.

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