140 citations · 1.4k across the 46 of their papers we have counts for
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Relativistic matter bispectrum of cosmic structures on the light cone
Thomas Montandon, Julian Adamek, Oliver Hahn +4
Upcoming surveys of cosmic structures will probe scales close to the cosmological horizon, which opens up new opportunities for testing the cosmological concordance model to high a…
Renormalization group and UV completion of cosmological perturbations: Gravitational collapse as a critical phenomenon
Cornelius Rampf, Oliver Hahn
Cosmological perturbation theory is known to converge poorly for predicting the spherical collapse and void evolution of collisionless matter. Using the exact parametric solution a…
Eye of the Tyger: early-time resonances and singularities in the inviscid Burgers equation
Cornelius Rampf, Uriel Frisch, Oliver Hahn
We chart a singular landscape in the temporal domain of the inviscid Burgers equation in one space dimension for sine-wave initial conditions. These so far undetected complex singu…
Analytical growth functions for cosmic structures in a CDM Universe
Cornelius Rampf, Sonja Ornella Schobesberger, Oliver Hahn
The cosmological fluid equations describe the early gravitational dynamics of cold dark matter (CDM), exposed to a uniform component of dark energy, the cosmological constant .…