Is DESI Seeing Dynamical Dark Energy, or a Cosmic Glitch in Gravity?
Researchers investigated whether anomalies in baryon acoustic oscillation and CMB data point to two dark energy parameters or a single physical mismatch in gravity. They proposed a 'cosmic glitch in gravity' model, which uses one parameter ($\Omega_g$) to describe the difference between local and cosmological gravitational couplings. Data from DESI and CMB suggest $\Omega_g \approx -0.0081$, favoring this single-parameter gravity mismatch over dynamical dark energy models.