GRChombo: An adaptable numerical relativity code for fundamental physics
The Journal of Open Source Software The Open Journal 6:68 (2021) 3703
Primordial black hole formation with full numerical relativity
ArXiv 2109.04896 (2021)
Coherent gravitational waveforms and memory from cosmic string loops
Classical and Quantum Gravity IOP Publishing 37:20 (2020) 204001
The effects of potential shape on inhomogeneous inflation
Journal of Cosmology and Astroparticle Physics IOP Publishing 2020:5 (2020) 030
Abstract:
We study the robustness of single-field inflation against inhomogeneities. We derive a simple analytic criterion on the shape of the potential for successful inflation in the presence of inhomogeneities, and demonstrate its validity using full 3+1 dimensional numerical relativity simulations on several classes of popular models of single-field inflation. We find that models with convex potentials are more robust to inhomogeneities than those with concave potentials, and that concave potentials that vary on super-Planckian scales are significantly more robust than those that vary on sub-Planckian scales.Coherent Gravitational Waveforms and Memory from Cosmic String Loops
ArXiv 2002.05177 (2020)