2 papers
astro-ph.HE2026
Spiral structure from the interference of gravitational eigenmodes in ultralight dark matter halos
Jacob Reinach, Hubert Bray
We use a variety of analytic and numerical techniques to approximate the geometry of individual dark matter halos when modeled as collections of ultralight scalar bosons (ULDM), fo…
gr-qc2025
Topological Big Bangs: Reflection, Itty-Bitty Blenders, and Eternal Trumpets
Hubert Bray, James Wheeler
We discuss and formalize topological means by which the initial singularity might be mollified, at the level of the spacetime manifold's structure, in classical cosmological models…