Numerical simulations across 10 cosmologies reveal stronger perpendicular void-surface halo alignments in models with more dynamic dark energy, quantified by fitted parameter d_t that follows a bilinear relation with w and wa.
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An iterative AI reasoning process proposes new dynamical dark energy equations of state that are competitive with traditional forms on supernova, BAO, and Planck data.
Introduces Fractional Holographic Dark Energy (FHDE) via fractionally corrected entropy from a modified Wheeler-DeWitt equation and studies its late-time cosmology, field reconstructions, and extensions to modified gravity theories.
A two-field quintom model reproduces w0waCDM perturbation features and is mildly favored over it in Bayesian fits to BAO, CMB, and SNIa data.
Effective phantom dark energy is a background-level reconstruction that does not imply fundamental pathologies such as ghost instabilities or null energy condition violation by the underlying stress tensor.
A spinor-field Modified Chaplygin Gas model in Kantowski-Sachs spacetime yields H0 of 67-68 km/s/Mpc, late-time isotropy, q0 of -0.49, and a better AIC fit than LambdaCDM.
Derives background solutions for linear f(Q,T)=αQ+βT plus DBI field and reports MCMC posteriors from Hubble, BAO, and SNIa data that are consistent with late-time constraints.
A review summarizing advancements over the past two years that link DESI baryon acoustic oscillation data to string-inspired scenarios with dynamic dark energy.
Review of DESI evidence for dynamical dark energy, its dependence on parametrization and datasets, and alternative beyond-LambdaCDM interpretations that may address cosmological tensions.
Particle cosmology integrates particle physics with cosmology to interpret the early universe as a natural high-energy laboratory and explain phenomena via theories like inflation, baryogenesis, and dark matter.
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Particle Cosmology
Particle cosmology integrates particle physics with cosmology to interpret the early universe as a natural high-energy laboratory and explain phenomena via theories like inflation, baryogenesis, and dark matter.