$H(z)$ diagnostics on the nature of dark energy
$Om$ Diagnostic for Dilaton Dark Energy
$Λ$-doublet spectra of diatomic radicals and their dependence on fundamental constants
$Λ(t)$CDM Model as a Unified Origin of Holographic and Agegraphic Dark Energy Models
$φ^4$ inflation is not excluded
$ω=-1$ crossing in quintessence models in Lyra's geometry