Dynamical dark energy from an ultralight axion
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DOI: 10.1103/3mpg-24d2
Abstract: Recently the Dark Energy Survey (DES) Collaboration presented evidence that the equation of state $w$ of the dark energy is varying, or $w \simeq -0.948$ if it is constant. In either case, the dark energy… read more here.
Keywords: ultralight axion; dynamical dark; dark energy; energy ... See more keywords
Early structure formation constraints on the ultralight axion in the postinflation scenario
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DOI: 10.1103/physrevd.101.123518
Abstract: Many works have concentrated on the observable signatures of the dark matter being an ultralight axion-like particle (ALP). We concentrate on a particularly dramatic signature in the late-time cosmological matter power spectrum that occurs if… read more here.
Keywords: structure formation; early structure; ultralight axion;
Ultralight axion and modern cosmology tensions
Sign Up to like & getrecommendations! Published in 2024 at "International Journal of Modern Physics A"
DOI: 10.1142/s0217751x25500587
Abstract: String-inspired axion model is considered to comprehensively solve the problems of modern cosmology, Hubble tension problem, the origin of the stochastic gravitational wave background, and too early formation of supermassive black holes at high $z$. read more here.
Keywords: modern cosmology; axion modern; ultralight axion; cosmology ... See more keywords