540 citations · 1.8k across the 17 of their papers we have counts for
17 papers · 1 filter
Probing late-time deviations from CDM with a quadratic dark energy expansion
Sehjal Khandelwal, Abraão J. S. Capistrano, Suresh Kumar +1
We investigate the observational viability of a quadratic dark energy expansion (QDEE) model as a phenomenological extension of the standard cosmological framework.…
Statistical consistency of sign-switching vacuum energy with cosmological observations
Sehjal Khandelwal, Abraão J. S. Capistrano, Suresh Kumar
We assess dataset agreement and late-time predictive adequacy in CDM and its sign-switching extension, CDM, using a suite of Gaussian and exact non-Gaussian consisten…
Probing dynamical dark energy with late-time data: Evidence, tensions, and the limits of the CDM framework
Tengpeng Xu, Suresh Kumar, Yun Chen +2
We test the dynamical dark-energy CDM (CPL) framework against CDM using CMB anisotropies and lensing together with DESI DR2, SDSS-IV, transverse/angular BAO (BAOtr), and…
-CDM: A promising phenomenological extension of the standard model of cosmology
Suresh Kumar
We investigate a phenomenological extension of the standard CDM framework, the -CDM model, in which the total energy density of the universe is expanded in powers of…
The CosmoVerse White Paper: Addressing observational tensions in cosmology with systematics and fundamental physics
Eleonora Di Valentino, Jackson Levi Said, Adam Riess +533
The standard model of cosmology has provided a good phenomenological description of a wide range of observations both at astrophysical and cosmological scales for several decades.…
New constraints on interacting dark energy from DESI DR2 BAO observations
Emanuelly Silva, Miguel A. Sabogal, Mateus Scherer +3
In its second data release (DR2), the Dark Energy Spectroscopic Instrument (DESI) publicly released measurements of Baryon Acoustic Oscillations (BAO) from over 13.1 million galaxi…
Sign Switching in Dark Sector Coupling Interactions as a Candidate for Resolving Cosmological Tensions
Miguel A. Sabogal, Emanuelly Silva, Rafael C. Nunes +2
The CDM model has successfully explained a wide range of cosmological observations, but is increasingly challenged by the emergence of cosmological tensions, particularly the Hu…
Mapping the CDM scenario to modified gravity: Effects on structure growth rate
Mateus S. Souza, Ana M. Barcelos, Rafael C. Nunes +2
The concept of a rapidly sign-switching cosmological constant, interpreted as a mirror AdS-dS transition in the late universe and known as the CDM, has significantly imp…
Quantifying the tension and evidence for interacting dark energy from redshift-space distortion measurements
Miguel A. Sabogal, Emanuelly Silva, Rafael C. Nunes +3
In recent years, Cosmic Microwave Background (CMB) observations, Weak Lensing surveys, and measurements from Redshift-Space Distortions (RSD) have revealed a significant…
CDM cosmology: Alleviating major cosmological tensions by predicting standard neutrino properties
Anita Yadav, Suresh Kumar, Cihad Kibris +1
We investigate a two-parameter extension of the CDM model by allowing variations in the effective number of neutrino species and their total mass $\sum m_ν…
Cosmological constraints on CDM scenario in a type II minimally modified gravity
Özgür Akarsu, Antonio De Felice, Eleonora Di Valentino +5
The idea of a rapid sign-switching cosmological constant (mirror AdS-dS transition) in the late universe at , known as the CDM model, has significantly improve…
CDM cosmology from a type-II minimally modified gravity
Özgür Akarsu, Antonio De Felice, Eleonora Di Valentino +5
We integrate CDM, a promising scenario for alleviating cosmological tensions, into VCDM, a type-II minimally modified gravity. This promotes the scenario to a fully pred…
Observational bounds on extended minimal theories of massive gravity: New limits on the graviton mass
Antonio De Felice, Suresh Kumar, Shinji Mukohyama +1
In this work, we derive for the first time observational constraints on the extended Minimal Theory of Massive Gravity (eMTMG) framework in light of Planck-CMB data, geometrical me…
Cosmology Intertwined IV: The Age of the Universe and its Curvature
Eleonora Di Valentino, Luis A. Anchordoqui, Ozgur Akarsu +88
A precise measurement of the curvature of the Universe is of primeval importance for cosmology since it could not only confirm the paradigm of primordial inflation but also help in…
Cosmology Intertwined III: and
Eleonora Di Valentino, Luis A. Anchordoqui, Ozgur Akarsu +89
The standard Cold Dark Matter cosmological model provides a wonderful fit to current cosmological data, but a few tensions and anomalies became statistically significant with t…
Cosmology Intertwined II: The Hubble Constant Tension
Eleonora Di Valentino, Luis A. Anchordoqui, Ozgur Akarsu +90
The current cosmological probes have provided a fantastic confirmation of the standard Cold Dark Matter cosmological model, that has been constrained with unprecedented accurac…
Cosmology Intertwined I: Perspectives for the Next Decade
Eleonora Di Valentino, Luis A. Anchordoqui, Ozgur Akarsu +89
The standard Cold Dark Matter cosmological model provides an amazing description of a wide range of astrophysical and astronomical data. However, there are a few big open quest…