Oliver Hahn - March 6, 2015

Dark matter simulations in the continuum limit

N-body simulations are the backbone of numerical cosmology but their discrete
nature poses various challenges both when modelling and when analysing the
continuum properties of the dark matter fluid. These are particularly evident
in simulations of warm dark mater structure formation and in multi-fluid
simulations. I will review recent progress in analysis and simulation techniques
that go beyond 
the particle approach and attempt to recover the continuum limit and the full
fine-grained distribution function. While still being in their infancy, these
techniques are able to already solve many of the problems of the N-body method.