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Improved cosmological constraints on the neutrino mass and lifetime
Guillermo F. Abellán, Zackaria Chacko, Abhish Dev +3
We present cosmological constraints on the sum of neutrino masses as a function of the neutrino lifetime, in a framework in which neutrinos decay into dark radiation after becoming…
Dark Energy at early times and ACT: a larger Hubble constant without late-time priors
Vivian Poulin, Tristan L. Smith, Alexa Bartlett
In this paper we fit two models of Early Dark Energy (EDE) (an increase in the expansion rate before recombination) to the combination of Atacama Cosmology Telescope (ACT) measurem…
The Olympics: A fair ranking of proposed models
Nils Schöneberg, Guillermo Franco Abellán, Andrea Pérez Sánchez +3
Despite the remarkable success of the Cold Dark Matter (CDM) cosmological model, a growing discrepancy has emerged (currently measured at the level of ) between t…
Non-thermal neutrino-like hot dark matter in light of the tension
Subinoy Das, Anshuman Maharana, Vivian Poulin +1
The CDM prediction of -- where is the root mean square of matter fluctuations on a 8 Mpc scale -- once calibrated on Planck CMB data…
Linear cosmological constraints on 2-body decaying dark matter scenarios and the tension
Guillermo Franco Abellán, Riccardo Murgia, Vivian Poulin
The ' tension' is a longstanding discrepancy between the cosmic microwave background (CMB) and weak gravitational lensing determination of the amplitude of matter fluctuations…