We perform large-scale cosmological simulations that solve Einstein's equations directly via
numerical relativity. Starting with initial conditions sampled from the cosmic microwave …

We study gauge preheating following pseudoscalar-driven inflation in full general relativity.
We implement the Baumgarte-Shapiro-Shibata-Nakamura (BSSN) scheme to solve the full …

Recently it has been noted by Di Valentino, Melchiorri and Silk (2019) that the enhanced
lensing signal relative to that expected in the spatially flat ΛCDM model poses a possible …

Cosmological models typically neglect the complicated nature of the spacetime mani-fold at
small scales in order to hypothesize idealized general relativistic solutions for describing the …

We present GRAMSES, a new pipeline for nonlinear cosmological N-body simulations in
General Relativity (GR). This code adopts the Arnowitt-Deser-Misner (ADM) formalism of …

We investigate the importance of local gravity during preheating, the nonlinear dynamics
that may be responsible for starting the process of reheating the Universe after inflation. We …

We have conducted extensive lattice simulations to study the postinflation dynamics of
multifield models involving nonminimal couplings. We explore the parameter dependence of …

We apply and extend standard tools for void statistics to cosmological simulations that solve
Einstein's equations with numerical relativity (NR). We obtain a simulated void catalogue …

We perform three-dimensional simulations of homogeneous and inhomogeneous
cosmologies via the coupling of the einstein toolkit numerical relativity code for spacetime …

Oscillons are dense nonperturbative objects that may be copiously produced in the
preheating period after inflation. Oscillon preheatings are usually simulated with nonlinear …