Cosmological Vlasov-Poisson Simulations of Structure Formation with Relic Neutrinos: Nonlinear Clustering and the Neutrino Mass

Understand

We present the results of cosmological simulations of large-scale structure formation with massive neutrinos.

• The phase-space distribution of the cosmic relic neutrinos is followed, for the first time, by directly integrating the six-dimensional Vlasov-Poisson equations.
• Our novel approach allows us to represent free streaming and clustering of neutrinos, and their gravitational interaction with cold dark matter accurately.
• We thus obtain solutions for the collisionless dynamics independent of conventional N-body methods.