2 papers
gr-qc2026
Preheating and oscillon formation in Einstein-scalar-Gauss-Bonnet gravity
Areef Waeming, Josu C. Aurrekoetxea, Katy Clough +2
Non-perturbative processes in the early universe may create overdense structures in scalar fields like the inflaton, called oscillons. In this work, we explore whether the leading…
gr-qc2026
GRTresna: An open-source code to solve the initial data constraints in numerical relativity
Josu C. Aurrekoetxea, Sam E. Brady, Llibert Aresté-Saló +11
GRTresna is a multigrid solver designed to solve the constraint equations for the initial data required in numerical relativity simulations. In particular, it is focussed on scenar…