15 papers
A New Window on Dynamical Dark Energy: Combining DESI-DR2 BAO with future Gravitational Wave Observations
Felipe Bruno Medeiros dos Santos, Jonathan Morais, Supriya Pan +2
Baryon acoustic oscillation (BAO) data from the Dark Energy Spectroscopic Instrument (DESI) appear to indicate the first evidence for dynamical dark energy (DDE), with a present-da…
Joint Constraints on Neutrinos and Dynamical Dark Energy in Minimally Modified Gravity
Artur Ladeira, Rafael C. Nunes, Supriya Pan +1
The \(w_{\dagger}\)VCDM framework provides a theoretically well-controlled extension of \(Î\)CDM within the class of minimally modified gravity theories, allowing for flexible cos…
Shape of Dark Energy: Constraining Its Evolution with a General Parametrization
Dong Ha Lee, Weiqiang Yang, Eleonora Di Valentino +2
We consider a general dark energy (DE) model parametrized by its equation-of-state (EoS), featuring three free parameters: (the present-day value of the DE EoS), (quan…
When One-Parameter Dark Energy Makes Neutrinos Physical Again
Weiqiang Yang, Eleonora Di Valentino, Eric V. Linder +2
A puzzling implication of current data interpreted in the CDM cosmology is the preference for a negative sum of neutrino masses. Moving to CDM brings an appreciable fra…
Plasma impact on black hole shadow and gravitational weak lensing for Schwarzschild-like black hole
Weiqiang Yang, Mirzabek Alloqulov, Ahmadjon Abdujabbarov +3
This article delves into the observational properties of a Schwarzschild-like black hole (BH). Initially, the research provides a succinct examination of the spacetime geometry and…
When Dark Energy Turns On: Constraints on a Critical Emergence Model
Mahdi Najafi, Mahdi Habibollahi, Masoume Reyhani +4
We investigate a specific emergent dark energy scenario, known as critically emergent dark energy (CEDE), in which dark energy is effectively absent in the early Universe and becom…