Swampland Conjectures and Inflating Phases of the Universe
مهدی ترابیان (دانشکده فیزیک دانشگاه صنعتی شریف )
Abstract: The swampland conjectures that are motivated by string theory offer a list of criteria that every field theory consistent with quantum gravity must admit. In particular, they constrain the inflating phases of the early and late universe. In this talk, we discuss the recently proposed trans-Planckian censorship conjecture and its consequences for inflationary cosmology. It excludes many models of inflation. Specifically, it implies that inflation must be low scale that implies severe fine-tuning of initial conditions and no primordial gravitation waves. We discuss how multiple inflationary models can explain the present horizon problem, alleviate the initial condition problem and accommodate possible detection of gravitational waves.
یکشنبه 10 آذر 1398، ساعت 15:00
دانشکده فیزیک، طبقه اول کلاس فیزیک 3