Evidence for dynamical dark energy in the w0waCDM framework is strongly dataset-dependent, driven by mismatches in low-redshift BAO distance ratios that produce divergent expansion histories and inconsistent Hubble tension relief.
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Tachyon dark energy with exponential potential fitted to DESI and Pantheon+ data predicts a future turnaround in the equation of state parameter.
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Probing Dynamical Dark Energy with Late-Time Data: Evidence, Tensions, and the Limits of the $w_0w_a$CDM Framework
Evidence for dynamical dark energy in the w0waCDM framework is strongly dataset-dependent, driven by mismatches in low-redshift BAO distance ratios that produce divergent expansion histories and inconsistent Hubble tension relief.
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Tachyonic dark energy- Constraints from current observations
Tachyon dark energy with exponential potential fitted to DESI and Pantheon+ data predicts a future turnaround in the equation of state parameter.