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Interacting dark energy after DESI DR2: a challenge for CDM paradigm?
Supriya Pan, Sivasish Paul, Emmanuel N. Saridakis +1
We investigate the scenario of interacting dark energy through a detailed confrontation with various observational datasets. We quantify the interaction in a general way, through t…
On the interacting dark energy scenarios the case for Hubble constant tension
Supriya Pan, Weiqiang Yang
The Hubble constant is one of the important cosmological parameters measuring the expansion rate of our universe at present moment. Over the last couple of years, has c…
Evidence of dynamical dark energy in a non-flat universe: current and future observations
Mehdi Rezaei, Supriya Pan, Weiqiang Yang +1
We investigate the dark energy phenomenology in an extended parameter space where we allow the curvature density of our universe as a free-to-vary parameter. The inclusion of the c…
Exploring bulk viscous unified scenarios with Gravitational Waves Standard Sirens
Weiqiang Yang, Supriya Pan, Eleonora Di Valentino +2
We consider the unified bulk viscous scenarios and constrain them using the Cosmic Microwave Background observations from Planck 2018 and the Pantheon sample from Type Ia Supernova…
New late-time constraints on gravity
Suresh Kumar, Rafael C. Nunes, Supriya Pan +1
Modification of general relativity (GR) inspired by theories like gravity is among the most popular ones to explain the late-time acceleration of the Universe as an alternat…
IWDM: The fate of an interacting non-cold dark matter vacuum scenario
Supriya Pan, Weiqiang Yang, Eleonora Di Valentino +2
In most cosmological models, the equation of state of the dark matter is assumed to be zero, which means that the dark matter is pressure-less or cold. While this hypothesis is bas…