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astro-ph.CO2026
Inflationary Axion Isocurvature in the CMB across All Ultralight Masses
Rayne Liu, Wayne Hu, Daniel Grin
If the Peccei-Quinn symmetry of an ultralight axion is broken before the end of inflation, axion quantum fluctuations seed isocurvature perturbations, linking them to the tensor-to…
astro-ph.CO2026
Disentangling cosmic distance tensions with early and late dark energy
Tanisha Jhaveri, Tanvi Karwal, Thomas Crawford +4
Recent cosmological data reveal tension between parameters inferred from measurements of the cosmic microwave background (CMB), baryon acoustic oscillations (BAO), and supernovae (…
astro-ph.CO2026
Phantom Mirage from Axion Dark Energy
Rayne Liu, Yijie Zhu, Wayne Hu +1
Supernova (SN) and baryon acoustic oscillation (BAO) distance measures have recently provided hints that the dark energy is not only dynamical but apparently evolves from normal to…