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astro-ph.CO2026
Audible curvaton: modulated phase transition as the origin of large-scale curvature perturbations and gravitational wave anisotropies
Wen-Yuan Ai, Gabriele Franciolini, Xin Wang +1
We propose a post-inflationary first-order phase transition modulated by a light spectator field as the origin of primordial large-scale curvature perturbations. Spectator fluctuat…
astro-ph.CO2026
Coupled Dark Energy and Dark Matter for DESI: An Effective Guide to the Phantom Divide
Stefan Antusch, Stephen F. King, Xin Wang
Motivated by the recent Dark Energy Spectroscopic Instrument (DESI) DR2 preference for dynamical dark energy, we study interacting dark energy models in which a canonical quintesse…