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203 papers · 1 filter
Revisiting CPL with sign-switching density: To cross or not to cross the NECB
Mine Gökçen, Özgür Akarsu, Eleonora Di Valentino
Recent DESI DR2 BAO measurements, when combined with CMB and SNeIa data, exhibit a - preference for dynamical dark energy (DE) described by the CPL-parametrized equatio…
Revisiting the Matter Creation Process: Observational Constraints on Gravitationally Induced Dark Energy and the Hubble Tension
Tiziano Schiavone, Mariaveronica De Angelis, Luis A. Escamilla +2
The Hubble tension and the unknown origin of dark energy motivate the exploration of alternative mechanisms for late-time cosmic acceleration. We investigate gravitationally induce…
Decay of quintessence into dark matter: mitigating the Hubble tension?
Giovanni Montani, Luis A. Escamilla, Nakia Carlevaro +1
We propose a revised cosmological scenario that extends the Cold Dark Matter (CDM) framework by incorporating metric gravity in the Jordan frame. In this model, the d…
Beyond Two Parameters: Revisiting Dark Energy with the Latest Cosmic Probes
Hanyu Cheng, Supriya Pan, Eleonora Di Valentino
Dark energy (DE) models with many free parameters are often considered excessive, as constraining all parameters poses a significant challenge. While such models offer greater flex…
Focus Point on Tensions in Cosmology from Early to Late Universe: Part II: New Directions in the Light of Observations from the Most Modern Astronomical Facilities
S. Capozziello, E. Di Valentino, V. G. Gurzadyan
The papers included in this Focus Point collection are devoted to the studies on the cosmological tensions and challenges stimulated by the latest observational data. The first res…
The Local Distance Network: a community consensus report on the measurement of the Hubble constant at 1% precision
H0DN Collaboration, Stefano Casertano, Gagandeep Anand +35
The direct, empirical determination of the local value of the Hubble constant (H0) has markedly advanced thanks to improved instrumentation, measurement techniques, and distance es…