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Astrophysics Colloquium

The Schrödinger Method, a Unifying Dynamical Description for Dark Matter and Massive Neutrinos
Presented by Michael Kopp
Nordic Institute for Theoretical Physics, Stockholm, Sweden

Thursday, February 27, 2020
11:00 A.M. in 169-336

Abstract
This talk presents an introduction to the "Schrödinger method", a method to solve the Vlasov equation via the Schrödinger-Poisson equation. The Vlasov equation describes the collisionless dynamics of self-gravitating systems, in particular cold dark matter (CDM) and hot/warm DM to which non-relativistic massive neutrinos belong. For the first time, we implemented the Schrödinger method in two spatial dimensions in CUDA, extending the previous one-dimensional studies. We performed a quantitive comparison of our code and the Vlasov solver ColDICE, finding excellent agreement. Similar excellent agreement is also found for hot initial conditions. This establishes that the Schrödinger method can be used as a unifying framework to accurately describe large scale structure formation in CDM + massive neutrino cosmologies both in numerical simulations, as well as semi-analytical calculations.

JPL Contact: Katarina Markovic (4-9981)


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