Are we survivors of the sudden past singularity?

Author:

Adam Balcerzak, Tomasz Denkiewicz, Mateusz Lisaj

Keyword:

General Relativity and Quantum Cosmology, General Relativity and Quantum Cosmology (gr-qc)

journal:

date:

2023-08-24 16:00:00

Abstract

In this paper, we investigate the viability of cosmological models featuring a type II singularity that occurs during the past evolution of the Universe. We construct a scenario in which the singularity arises and then constrain the model parameters using observational data from Type Ia Supernovae, Cosmic Chronometers, and Gamma Ray Bursts. We find that the resulting cosmological models based on scenarios with the past type II singularity cannot be excluded by kinematical tests using current observations.

PDF: Are we survivors of the sudden past singularity?.pdf