Rényi entropic corrections to cosmology are constrained by DESI DR2 BAO and GW data to a viable quintessence-like model that approaches ΛCDM without phantom behavior and satisfies BBN bounds.
Weinberg, The Cosmological Constant Problem, Rev
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Natural SUSY with axino LSP allows viable mixed axion-axino dark matter matching the observed abundance for axino masses near 100 keV and PQ scales of 10^11 to 3x10^12 GeV in DFSZ and KSVZ models.
Observational constraints on a dark energy EoS parametrization in curved spacetime yield α ≈ 0.35 (0.56) and Ω_k0 that changes sign with ANN data reconstruction.
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.
In f(T) gravity with Gong-Zhang EoS parametrization, the fitted model shows transient acceleration followed by future deceleration and satisfies thermodynamic consistency.
A two-parameter mass-to-horizon entropy extension yields the Friedmann equation via Clausius and modified thermodynamics while satisfying entropy maximization and stable fluctuations.
f(Q,T) gravity with linear form and affine EoS is constrained by CC, Pantheon+SH0ES and DESI BAO data, yielding a present universe age consistent with Planck within 1σ.
citing papers explorer
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Exploring Cosmic Evolution in R\'enyi Entropic Cosmology with Constraints from DESI DR2 BAO and GW Data
Rényi entropic corrections to cosmology are constrained by DESI DR2 BAO and GW data to a viable quintessence-like model that approaches ΛCDM without phantom behavior and satisfies BBN bounds.
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Natural SUSY with mixed axion/axino dark matter
Natural SUSY with axino LSP allows viable mixed axion-axino dark matter matching the observed abundance for axino masses near 100 keV and PQ scales of 10^11 to 3x10^12 GeV in DFSZ and KSVZ models.
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Constraining Dark Energy Dynamics in Curved Spacetime with Current Observations
Observational constraints on a dark energy EoS parametrization in curved spacetime yield α ≈ 0.35 (0.56) and Ω_k0 that changes sign with ANN data reconstruction.
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Testing an anisotropic spinor field--based Modified Chaplygin Gas model in Kantowski--Sachs spacetime with observational constraints
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.
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Transiently accelerating cosmological model with Gong-Zhang parametrization in $f(T)$ teleparallel gravity
In f(T) gravity with Gong-Zhang EoS parametrization, the fitted model shows transient acceleration followed by future deceleration and satisfies thermodynamic consistency.
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Generalized Mass-to-Horizon Entropy and Horizon Thermodynamics
A two-parameter mass-to-horizon entropy extension yields the Friedmann equation via Clausius and modified thermodynamics while satisfying entropy maximization and stable fluctuations.
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The $f(Q, T)$ gravity and affine EoS: observational aspects
f(Q,T) gravity with linear form and affine EoS is constrained by CC, Pantheon+SH0ES and DESI BAO data, yielding a present universe age consistent with Planck within 1σ.