Ripped ΛCDM: An observational contender to the consensus cosmological model

Current observations do not rule out the possibility that the Universe might end up in an abrupt event, but that fatality might be avoided, as it happens in the pseudorip dark energy scenario in the form of asymptotically de Sitter behaviours. Different such evolutions may be explored through suitable parameterizations of the dark energy and then confronted to cosmological background data. Here we parameterize a pseudorip cosmological model assuming a particular sigmoid function, and carry an in-depth multifaceted examination of its evolutionary features and statistical performance. Further insight into the model's physics is obtained through a phantom scalar field reinterpretation for which the potential is reconstructed in the small and large scale factor regimes. This depiction of a non-violent final fate of our cosmos seems to be arguably statistically favoured over the consensus ΛCDM model according to some Bayesian discriminators. These conclusions are drawn using a combination of state-of-the-art low and high redshift cosmological probes.