Story perspectives
New Data Reveals Oscillations in Dark Energy Dynamics
10/1/2025
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Story summary
- DESI DR1 and DR2 data reveal oscillations in the dark energy equation of state w(z).
- Supernova (SN) datasets indicate a strong deviation from the ?CDM model.
- The w0–wa parameterization constrains dynamical DE, identifying four models: quintessence, phantom, quintom A, and quintom B.
- PCA shows SN data tighten w(z) constraints, supporting a dynamical DE near -1, quintom B.
