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Showing 2025 · gr-qcShow all
3 papers · 2 filters
gr-qc2025★ 1 cited
Primordial Black Holes, Charge, and Dark Matter: Rethinking Evaporation Limits
Sebastian Schuster, Jessica Santiago, Justin Feng +1
Limits on the dark matter fraction of small mass primordial black holes from Hawking radiation are predominantly derived from the assumption of a Schwarzschild black hole evaporati…
gr-qc2025★ 1 cited
Dust stars in the minimal exponential measure model
Reyhan D. Lambaga, Justin C. Feng, Norman Hsia +1
We report the existence of horizonless compact object solutions supported by dust in the Minimal Exponential Measure (MEMe) model, a theory which modifies the couplings between gra…
gr-qc2025
Cosmic Acceleration from Nothing
Michael R. R. Good, Eric V. Linder
We demonstrate that if the universe started as a vacuum fluctuation rather than from a singular Big Bang state, the universe must have a late-time cosmic acceleration. This is requ…