2 papers
astro-ph.CO2026
Phase-space perturbation theory for cosmic large-scale structure
Hannes Heisler, Marvin Sipp, Matthias Bartelmann
We consider a perturbative approach to the Vlasov-Poisson system for cosmic structure formation that does not rely on any truncation of the momentum-cumulant hierarchy. The general…
astro-ph.CO2026
Cosmic structure from the path integral of classical mechanics and its comparison to standard perturbation theory
Marvin Sipp, Hannes Heisler, Matthias Bartelmann
We investigate cosmic structure formation in the framework of a path-integral formulation of an -particle ensemble in phase space, dubbed Resummed Kinetic Field Theory (RKFT), u…