# The Helmholtz Hierarchy: phase space statistics of cold dark matter

@article{Tassev2011TheHH,
title={The Helmholtz Hierarchy: phase space statistics of cold dark matter},
author={Svetlin Valentinov Tassev},
journal={Journal of Cosmology and Astroparticle Physics},
year={2011},
volume={2011},
pages={022-022}
}
• S. Tassev
• Published 1 December 2010
• Physics
• Journal of Cosmology and Astroparticle Physics
We present a new formalism to study large-scale structure in the universe. The result is a hierarchy (which we call the Helmholtz Hierarchy'') of equations describing the phase space statistics of cold dark matter (CDM). The hierarchy features a physical ordering parameter which interpolates between the Zel'dovich approximation and fully-fledged gravitational interactions. The results incorporate the effects of stream crossing. We show that the Helmholtz hierarchy is self-consistent and obeys… Expand
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