2.4k citations · 13.2k across the 70 of their papers we have counts for
61 papers · 1 filter
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 -Cold Dark Matter cosmology is the preference for a negative sum of neutrino masses. Moving to CDM brings an ap…
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…
Cracks in the Standard Cosmological Model: Anomalies, Tensions, and Hints of New Physics
Eleonora Di Valentino
Cosmology has entered an era of unprecedented precision, yet increasing accuracy has revealed cracks in the standard CDM paradigm. Although the model remains highly successful w…
A Multi-Probe ISW Study of Dark Energy Models with Negative Energy Density: Galaxy Correlations, Lensing Bispectrum, and Planck ISW-Lensing Likelihood
Payam Ghafari, Mahdi Najafi, Mina Ghodsi Yengejeh +3
We investigate the late-time imprints of three dark energy (DE) models, namely, the Chevallier-Polarski-Linder (CPL) parametrization, CDM, and an Omnipotent DE model, on…
Nonlinear Matter Power Spectrum from relativistic -body Simulations: CDM versus CDM
Özgür Akarsu, Eleonora Di Valentino, Jiří Vyskočil +3
We present relativistic -body simulations of a CDM - sign-switching cosmological constant (CC) - scenario under general relativity and compare its nonlinear matter po…
Constraining exotic high- reionization histories with Gaussian processes and the Cosmic Microwave Background
Hanyu Cheng, Ziwen Yin, Eleonora Di Valentino +2
The large-angle polarization anisotropies in the Cosmic Microwave Background (CMB) arise from Thomson scattering of CMB photons off free electrons in the post-recombination Univers…
Cosmic Strings as Dynamical Dark Energy: Novel Constraints
Hanyu Cheng, Eleonora Di Valentino, Luca Visinelli
Cosmic strings, topological defects predicted by high-energy theories, may contribute to the late-time expansion of the Universe, effectively mimicking dynamical dark energy. We in…
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.…
Exploring the Growth-Index () Tension with CDM
Luis A. Escamilla, Özgür Akarsu, Eleonora Di Valentino +2
Recent observational analyses have revealed a significant tension in the growth index , which characterizes the growth rate of cosmic structures. Specifically, when treating …
Robust Preference for Dynamical Dark Energy in DESI BAO and SN Measurements
William Giarè, Mahdi Najafi, Supriya Pan +2
Recent Baryon Acoustic Oscillation (BAO) measurements released by DESI, when combined with Cosmic Microwave Background (CMB) data from Planck and two different samples of Type Ia s…
Structure Formation in Various Dynamical Dark Energy Scenarios
Masoume Reyhani, Mahdi Najafi, Javad T. Firouzjaee +1
This research investigates the impact of the nature of Dark Energy (DE) on structure formation, focusing on the matter power spectrum and the Integrated Sachs-Wolfe effect (ISW). B…
Dark Energy Survey Year 3 results: Magnification modeling and impact on cosmological constraints from galaxy clustering and galaxy-galaxy lensing
J. Elvin-Poole, N. MacCrann, S. Everett +93
We study the effect of magnification in the Dark Energy Survey Year 3 analysis of galaxy clustering and galaxy-galaxy lensing, using two different lens samples: a sample of Luminou…
Cosmology Intertwined: A Review of the Particle Physics, Astrophysics, and Cosmology Associated with the Cosmological Tensions and Anomalies
Elcio Abdalla, Guillermo Franco Abellán, Amin Aboubrahim +200
In this paper we will list a few important goals that need to be addressed in the next decade, also taking into account the current discordances between the different cosmological…
Snowmass 2021 CMB-S4 White Paper
Kevork Abazajian, Arwa Abdulghafour, Graeme E. Addison +353
This Snowmass 2021 White Paper describes the Cosmic Microwave Background Stage 4 project CMB-S4, which is designed to cross critical thresholds in our understanding of the origin a…
Snowmass2021 Cosmic Frontier: Cosmic Microwave Background Measurements White Paper
Clarence L. Chang, Kevin M. Huffenberger, Bradford A. Benson +128
This is a solicited whitepaper for the Snowmass 2021 community planning exercise. The paper focuses on measurements and science with the Cosmic Microwave Background (CMB). The CMB…
Robust sampling for weak lensing and clustering analyses with the Dark Energy Survey
P. Lemos, N. Weaverdyck, R. P. Rollins +68
Recent cosmological analyses rely on the ability to accurately sample from high-dimensional posterior distributions. A variety of algorithms have been applied in the field, but jus…
Dark Energy Survey Year 3 Results: Multi-Probe Modeling Strategy and Validation
E. Krause, X. Fang, S. Pandey +121
This paper details the modeling pipeline and validates the baseline analysis choices of the DES Year 3 joint analysis of galaxy clustering and weak lensing (a so-called "32…
Dark Energy Survey Year 3 results: Cosmological constraints from galaxy clustering and galaxy-galaxy lensing using the MagLim lens sample
A. Porredon, M. Crocce, J. Elvin-Poole +141
Two of the most sensitive probes of the large scale structure of the universe are the clustering of galaxies and the tangential shear of background galaxy shapes produced by those…
Dark Energy Survey Year 3 Results: Constraints on cosmological parameters and galaxy bias models from galaxy clustering and galaxy-galaxy lensing using the redMaGiC sample
S. Pandey, E. Krause, J. DeRose +138
We constrain cosmological and galaxy-bias parameters using the combination of galaxy clustering and galaxy-galaxy lensing measurements from the Dark Energy Survey Year-3 data. We d…
Dark Energy Survey Year 3 Results: Cosmology from Cosmic Shear and Robustness to Modeling Uncertainty
L. F. Secco, S. Samuroff, E. Krause +151
This work and its companion paper, Amon et al. (2021), present cosmic shear measurements and cosmological constraints from over 100 million source galaxies in the Dark Energy Surve…
Dark Energy Survey Year 3 Results: Exploiting small-scale information with lensing shear ratios
C. Sánchez, J. Prat, G. Zacharegkas +138
Using the first three years of data from the Dark Energy Survey, we use ratios of small-scale galaxy-galaxy lensing measurements around the same lens sample to constrain source red…
Constraints on dark matter to dark radiation conversion in the late universe with DES-Y1 and external data
Angela Chen, Dragan Huterer, Sujeong Lee +81
We study a phenomenological class of models where dark matter converts to dark radiation in the low redshift epoch. This class of models, dubbed DMDR, characterizes the evolution o…
A fake Interacting Dark Energy detection?
Eleonora Di Valentino, Olga Mena
Models involving an interaction between the Dark Matter and the Dark Energy sectors have been proposed to alleviate the long standing Hubble constant tension. In this paper we anal…
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…