Heterotic string theory implies the QCD axion mass is bounded below by 0.5 neV and typically falls in [0.5, 0.8] neV across most compactifications.
Lodha, et al., DESI 2024: Constraints on physics- focused aspects of dark energy using DESI DR1 BAO data, Phys
5 Pith papers cite this work, alongside 130 external citations. Polarity classification is still indexing.
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Underdamped dark-energy oscillator fits to DESI+DESY5/Union3 give H0≈71–72 km/s/Mpc, cutting SH0ES tension to ~1.5σ at no Bayesian cost versus ΛCDM.
Bayesian constraints on seven w(a) parameterizations with CMB+BAO+SNIa datasets favor the logarithmic model over LambdaCDM in several combinations and show modest sigma8 relief.
DESI DR2 BAO combined with Pantheon+, DES-Dovekie and Union3 supernovae yields 1.1-2.3 sigma preference for Quintom-B type evolving dark energy (w0 > -1, wa < 0) with phantom crossing near z ~ 0.5, but no model reaches robust statistical significance.
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Heterotic String Theory Suggests a QCD Axion Near 0.5 neV
Heterotic string theory implies the QCD axion mass is bounded below by 0.5 neV and typically falls in [0.5, 0.8] neV across most compactifications.
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Does DESI prefer Damped Oscillating Dark Energy over Cosmological constant?
Underdamped dark-energy oscillator fits to DESI+DESY5/Union3 give H0≈71–72 km/s/Mpc, cutting SH0ES tension to ~1.5σ at no Bayesian cost versus ΛCDM.
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Constraints of dynamical dark energy models from different observational datasets
Bayesian constraints on seven w(a) parameterizations with CMB+BAO+SNIa datasets favor the logarithmic model over LambdaCDM in several combinations and show modest sigma8 relief.
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Evidence for evolving dark energy from DESI DR2 BAO and Pantheon$^+$, DES-Dovekie, and Union3
DESI DR2 BAO combined with Pantheon+, DES-Dovekie and Union3 supernovae yields 1.1-2.3 sigma preference for Quintom-B type evolving dark energy (w0 > -1, wa < 0) with phantom crossing near z ~ 0.5, but no model reaches robust statistical significance.
- Model-independent reconstruction of cosmic thermodynamics and dark energy dynamics