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astro-ph.CO2025
DESI-Like Hubble Expansion From Staged Symmetry Breaking: Constraints on Renormalizable Models
Zachary J. Hoelscher, Thomas W. Kephart, Robert J. Scherrer +1
The Dark Energy Spectroscopic Instrument (DESI) second data release shows a moderate preference for dark energy with a time-varying equation of state parameter, suggesting that the…
astro-ph.CO2025
Probing the Nature of Dark Matter Self-Interactions Through Observations of Massive Black Hole Mergers
Zachary J. Hoelscher, Kelly Holley-Bockelmann, Akaxia Cruz +1
Though the nature of dark matter remains elusive, two models have come to prominence with testable predictions: cold dark matter (CDM) and self-interacting dark matter (SIDM). Whil…
astro-ph.CO2025
Cosmological Impacts of Black Hole Mergers: No Relief in Sight for the Hubble Tension
Zachary J. Hoelscher, Thomas W. Kephart, Kelly Holley-Bockelmann
The values of the Hubble constant inferred from local measurements and the cosmic microwave background (CMB) exhibit an approximately 5 sigma tension. Some have suggested this tens…