540 citations · 2.1k across the 26 of their papers we have counts for
26 papers
Signatures of Modified Gravity on Linear Scales in a Dynamical Dark Energy Background
Yo Toda, Adrià Gómez-Valent
Cosmological data from the cosmic microwave background (CMB), baryon acoustic oscillations, and Type Ia supernovae suggest that the component driving the accelerated expansion of t…
Constraints on Coupled Dark Energy in the DESI Era
Adrià Gómez-Valent, Ziyang Zheng, Luca Amendola
We investigate the current viability of a well-known coupled dark energy scenario in which cold dark matter (DM) interacts with a spin-0 dark energy component through a non-trivial…
Exploring the interplay of late-time dynamical dark energy and new physics before recombination
Alex González-Fuentes, Adrià Gómez-Valent
Cosmological models exhibiting crossing of the phantom divide improve the fit to current data, suggesting late-time dark energy (DE) dynamics at CL. However, they favor lo…
Dynamical Dark Energy models in light of the latest observations
Javier de Cruz Pérez, Adrià Gómez-Valent, Joan Solà Peracaula
In this paper, we study several models and parameterizations of dynamical dark energy (DE) that have been studied already in the past, in conjunction with the recently proposed mod…
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.…
Illustrating the consequences of a misuse of in cosmology
Matteo Forconi, Arianna Favale, Adrià Gómez-Valent
The parameter is the rms mass fluctuations on a scale of Mpc and is used to quantify the amplitude of matter fluctuations at linear scales. However, the depende…
A model-independent treatment of cosmic ladder calibration and measurement through low- observations
Arianna Favale, Adrià Gómez-Valent, Marina Migliaccio
Looking at the well-known Hubble tension as a tension in the calibrators of the cosmic distance ladder, i.e. the absolute magnitude of standard candles such as supernovae of Ty…
Quantification of 2D vs 3D BAO tension using SNIa as a redshift interpolator and test of the Etherington relation
Arianna Favale, Adrià Gómez-Valent, Marina Migliaccio
Several studies in the literature have found a disagreement between data on Baryon Acoustic Oscillations (BAO) derived using two distinct methodologies: the two-dimensional (2D or…
Towards a new model-independent calibration of Gamma-Ray Bursts
Arianna Favale, Maria Giovanna Dainotti, Adrià Gómez-Valent +1
Current data on baryon acoustic oscillations and Supernovae of Type Ia cover up to . These observations play a very important role in the determination of cosmological p…
Observational Constraints on Early Coupled Quintessence
Lisa W. K. Goh, Joan Bachs-Esteban, Adrià Gómez-Valent +2
We investigate an Early Coupled Quintessence model where a light scalar mediates a fifth force stronger than gravity among dark matter particles and leads to the growth of perturba…
String-inspired running-vacuum cosmology, quantum corrections and the current cosmological tensions
Nick E. Mavromatos, Joan Solà Peracaula, Adrià Gómez-Valent
In the context of a string-inspired running vacuum model (RVM) of cosmology with anomalies and torsion-induced axion-like fields, we discuss quantum corrections to the correspondin…
Cosmic chronometers to calibrate the ladders and measure the curvature of the Universe. A model-independent study
Arianna Favale, Adrià Gómez-Valent, Marina Migliaccio
We use the state-of-the-art data on cosmic chronometers (CCH) and the Pantheon+ compilation of supernovae of Type Ia (SNIa) to test the constancy of the SNIa absolute magnitude, $M…
Constraining constant and tomographic coupled dark energy with low-redshift and high-redshift probes
Lisa W. K. Goh, Adrià Gómez-Valent, Valeria Pettorino +1
We consider coupled dark energy (CDE) cosmologies, where dark matter particles feel a force stronger than gravity, due to the fifth force mediated by a scalar field which plays the…
Coupled and uncoupled early dark energy, massive neutrinos and the cosmological tensions
Adrià Gómez-Valent, Ziyang Zheng, Luca Amendola +2
Some cosmological models with non-negligible dark energy fractions in particular windows of the pre-recombination epoch are capable of alleviating the Hubble tension quite efficien…
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…
A fast test to assess the impact of marginalization in Monte Carlo analyses, and its application to cosmology
Adrià Gómez-Valent
Monte Carlo (MC) algorithms are commonly employed to explore high-dimensional parameter spaces constrained by data. All the statistical information obtained in the output of these…
Measuring the sound horizon and absolute magnitude of SNIa by maximizing the consistency between low-redshift data sets
Adrià Gómez-Valent
The comoving sound horizon at the baryon drag epoch, , encapsulates very important physical information about the pre-recombination era and serves as a cosmic standard ruler…
Early dark energy in the pre- and post-recombination epochs
Adrià Gómez-Valent, Ziyang Zheng, Luca Amendola +2
Many quintessence models possess scaling or attractor solutions where the fraction of dark energy follows the dominant component in previous epochs of the expansion, or phase trans…
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…
Update on Coupled Dark Energy and the tension
Adrià Gómez-Valent, Valeria Pettorino, Luca Amendola
In this work we provide updated constraints on coupled dark energy (CDE) cosmology with Peebles-Ratra (PR) potential and constant coupling strength . This modified gravity scena…
Density perturbations for running vacuum: a successful approach to structure formation and to the -tension
Adrià Gómez-Valent, Joan Solà Peracaula
Recent studies suggest that dynamical dark energy (DDE) provides a better fit to the rising affluence of modern cosmological observations than the concordance model (CDM) with a…