140 citations · 1.4k across the 46 of their papers we have counts for
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Lagrangian theory for cosmic structure formation with vorticity: Newtonian and post-Friedmann approximations
Cornelius Rampf, Eleonora Villa, Daniele Bertacca +1
We study the nonlinear gravitational dynamics of a universe filled with a pressureless fluid and a cosmological constant in the context of Newtonian gravity, and in the relativ…
Second-order cosmological perturbation theory and initial conditions for -body simulations
Adam J. Christopherson, Juan Carlos Hidalgo, Cornelius Rampf +1
We use gauge-invariant cosmological perturbation theory to calculate the displacement field that sets the initial conditions for -body simulations. Using first and second-order…
Relativistic perturbations in CDM: Eulerian & Lagrangian approaches
Eleonora Villa, Cornelius Rampf
We study the relativistic dynamics of a pressure-less and irrotational fluid of dark matter (CDM) with a cosmological constant (), up to second order in cosmological perturbatio…
Relativistic Lagrangian displacement field and tensor perturbations
Cornelius Rampf, Alexander Wiegand
We investigate the purely spatial Lagrangian coordinate transformation from the Lagrangian to the basic Eulerian frame. We demonstrate three techniques for extracting the relativis…
Astrophysical Bose-Einstein Condensates and Superradiance
Florian Kuhnel, Cornelius Rampf
We investigate gravitational analogue models to describe slowly rotating objects (e.g., dark-matter halos, or boson stars) in terms of Bose-Einstein condensates, trapped in their o…