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gr-qc2026
Locating critical solutions in numerical relativity using automatic differentiation
David Bambague, Miguel Bezares, Katy Clough +1
Numerical relativity is a term used to describe the solution of the full non-linear Einstein Equations as an initial value problem using numerical methods. Individual simulations a…
gr-qc2026
Starting inflation in asymptotically flat spacetimes
Sam E. Brady, Thomas W. Baumgarte, Katy Clough
A key question in early universe cosmology is whether inflation can be successfully seeded by a generic, localised fluctuation in the inflaton field that probes the inflationary pa…
astro-ph.CO2026
Primordial Black Holes in a Radiation-Dominated Universe
Thomas W. Baumgarte, Katy Clough, Mary Gerhardinger +2
Primordial fluctuations frozen out during inflation re-enter the cosmological horizon and can collapse, leading to the formation of primordial black holes. We perform simulations o…