2 citations · 4 across the 5 of their papers we have counts for
9 papers
Dark energy from neutrino interactions in Unimodular Gravity
Alejandro Gil-Ocaranza, Josue De-Santiago, Mauricio Lopez-Hernandez +1
We investigate a dark energy scenario generated by neutrino interactions mediated by a light scalar field, in which finite-temperature corrections induce an effective neutrino mass…
Comparing Hemispheres: Anisotropy in the deceleration parameter
Mauricio Lopez-Hernandez, Josue De-Santiago
We present a hemispherical comparison analysis of the deceleration parameter using the Pantheon+ sample of Type Ia supernovae to test the isotropy of cosmic acceleration and…
Towards a complete scheme of cosmological neutrino self-interactions: Collision term for a wide range of mediator masses
Ivan Pérez-Castro, Josue De-Santiago, Gabriela Garcia-Arroyo +2
Neutrino self-interactions (NSI) offer a potential pathway to address anomalies in standard cosmology and explain existing cosmological tensions. In this work, we present a novel f…
Redshift Assessment Infrastructure Layers (RAIL): Rubin-era photometric redshift stress-testing and at-scale production
The RAIL Team, Jan Luca van den Busch, Eric Charles +30
Virtually all extragalactic use cases of the Vera C. Rubin Observatory's Legacy Survey of Space and Time (LSST) require the use of galaxy redshift information, yet the vast majorit…
From Dark Radiation to Dark Energy: Unified Cosmological Evolution in K-essence Models
Eladio Moreno, Josue De-Santiago
We study a class of Unified Dark Matter (UDM) models based on generalized K-essence, where a single scalar field with non-canonical kinetic terms accounts for dark radiation, dark…
Resonant neutrino self-interactions: Insights from the full shape galaxy power spectrum
Hernán E. Noriega, Josue De-Santiago, Gabriela Garcia-Arroyo +2
This paper investigates resonant neutrino self-interactions in cosmology by employing, for the first time, the effective field theory of large-scale structure to model their impact…