401 citations · 1k across the 11 of their papers we have counts for
11 papers
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.…
Characterization of wormhole space-times supported by a covariant action-dependent Lagrangian theory
Ismael Ayuso, Ruth Lazkoz
In this work, we undertake an analysis of new wormhole solutions within an action-dependent Lagrangian framework. These geometries can be traversable and supported by a positive en…
DGP and DGPish cosmologies from actions
Ismael Ayuso, Ruth Lazkoz, José Pedro Mimoso
In this work we explore and test new formulations of cosmological scenarios in theories. In these settings, the non-metricity scalar () is the main source of gravity and…
Wormhole geometries induced by action-dependent Lagrangian theories
Ismael Ayuso, Francisco S. N. Lobo, José P. Mimoso
In this work, we explore wormhole geometries in a recently proposed modified gravity theory arising from a non-conservative gravitational theory, tentatively denoted action-depende…
Observational constraints on cosmological solutions of theories
Ismael Ayuso, Ruth Lazkoz, Vincenzo Salzano
Over the last years some interest has been gathered by theories, which are new candidates to replace Einstein's prescription for gravity. The non-metricity tensor allows…
Extremal cosmological black holes in Horndeski gravity and the anti-evaporation regime
Ismael Ayuso, Diego Sáez-Chillón Gómez
Extremal cosmological black holes are analysed in the framework of the most general second order scalar-tensor theory, the~so-called Horndeski gravity. Such~extremal black holes ar…
Prospects for Fundamental Physics with LISA
Enrico Barausse, Emanuele Berti, Thomas Hertog +318
In this paper, which is of programmatic rather than quantitative nature, we aim to further delineate and sharpen the future potential of the LISA mission in the area of fundamental…
What if Newton's Gravitational Constant was negative?
Ismael Ayuso, José P. Mimoso, Nelson J. Nunes
In this work, we seek a cosmological mechanism that may define the sign of the effective gravitational coupling constant, {\em G}. To this end, we consider general scalar-tensor gr…
Commissioning and First Observations with Wide FastCam at the Telescopio Carlos Sánchez
Sergio Velasco, Urtats Etxegarai, Alejandro Oscoz +9
The FastCam instrument platform, jointly developed by the IAC and the UPCT, allows, in real-time, acquisition, selection and storage of images with a resolution that reaches the di…
Non-minimal scalar-tensor theories
Ismael Ayuso, Jose A. R. Cembranos
We compute the spectrum of scalar models with a general coupling to the scalar curvature. We find that the perturbative states of these theories are given by two massive spin-0 mod…
On the consistency of universally non-minimally coupled theories
Ismael Ayuso, Jose Beltran Jimenez, Alvaro de la Cruz Dombriz
We discuss the consistency of a recently proposed class of theories described by an arbitrary function of the Ricci scalar, the trace of the energy-momentum tensor and the contract…