Josu Aurrekoetxea: Publications

Lessons for adaptive mesh refinement in numerical relativity

ArXiv 2112.10567 (2021)

Authors:

Miren Radia, Ulrich Sperhake, Amelia Drew, Katy Clough, Pau Figueras, Eugene A Lim, Justin L Ripley, Josu C Aurrekoetxea, Tiago França, Thomas Helfer

GRChombo: An adaptable numerical relativity code for fundamental physics

The Journal of Open Source Software The Open Journal 6:68 (2021) 3703

Authors:

Tomas Andrade, Llibert Salo, Josu Aurrekoetxea, Jamie Bamber, Katy Clough, Robin Croft, Eloy de Jong, Amelia Drew, Alejandro Duran, Pedro Ferreira, Pau Figueras, Hal Finkel, Tiago Frana, Bo-Xuan Ge, Chenxia Gu, Thomas Helfer, Juha Jäykkä, Cristian Joana, Markus Kunesch, Kacper Kornet, Eugene Lim, Francesco Muia, Zainab Nazari, Miren Radia, Justin Ripley, Paul Shellard, Ulrich Sperhake, Dina Traykova, Saran Tunyasuvunakool, Zipeng Wang, James Widdicombe, Kaze Wong

Primordial black hole formation with full numerical relativity

ArXiv 2109.04896 (2021)

Authors:

Eloy de Jong, Josu C Aurrekoetxea, Eugene A Lim

Coherent gravitational waveforms and memory from cosmic string loops

Classical and Quantum Gravity IOP Publishing 37:20 (2020) 204001

Authors:

Josu C Aurrekoetxea, Thomas Helfer, Eugene A Lim

The effects of potential shape on inhomogeneous inflation

Journal of Cosmology and Astroparticle Physics IOP Publishing 2020:5 (2020) 030

Authors:

Jc Aurrekoetxea, K Clough, R Flauger, Ea Lim

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.

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