Open questions of BSM Cosmology

Abstract

BSM physics, on which the now standard inflationary cosmology with baryosynthesis and dark matter/energy is based, inevitably leads to cosmological scenarios beyond this standard model, involving specific model dependent choice of models and parameters of BSM physics. Such model dependent cosmological predictions may have already found confirmations in the positive results of direct dark matter searches by DAMA/NaI and DAMA/LIBRA experiments, interpretation of the results of Gravitational Wave experiments in terms of Primordial Black Hole merging, observation of Stochastic GravitationalWave background by Pulsar Timing Arrays, indications of early galaxy formation in the observations of James Webb Space Telescope and searches for cosmic antihelium in the AMS02 experiment. We discuss the open questions in studies of these signatures of BSM cosmology.