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The Early Universe and Its Thermal History
(2019-01-01)
In this chapter, I will describe the thermal history of the Early Universe, i.e., the evolution of the particle species in it. After describing the Hot Big Bang scenario, and why it is required, we will calculate the ...
Primordial black hole evolution in two-fluid cosmology
(Wiley Blackwell Publishing, Inc, 2017-10)
Several processes in the early Universe might lead to the formation of primordial black holes with different masses. These black holes would interact with the cosmic plasma through accretion and emission processes. Such ...
Evidence for Top Quark Production in Nucleus-Nucleus Collisions
(2020-11-24)
Ultrarelativistic heavy ion collisions recreate in the laboratory the thermodynamical conditions prevailing in the early universe up to 10-6 sec, thereby allowing the study of the quark-gluon plasma (QGP), a state of quantum ...
Consistency relations for sharp inflationary non-Gaussian features
(IOP Publishing Ltd, 2016-09)
If cosmic inflation suffered tiny time-dependent deviations from the slow-roll regime, these would induce the existence of small scale-dependent features imprinted in the primordial spectra, with their shapes and sizes ...