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HEP Seminar – Prof. Raman Sundrum (University of Maryland) – Spring 2023
February 3, 2023 @ 3:30 pm - 5:00 pm
Speaker: Prof. Dr. Raman Sundrum (University of Maryland)
Title: Cosmology and Unification
Abstract: I will describe how future measurements of primordial Non-Gaussianities in the CMB, Large Scale Structure, 21-cm cosmology, and even stochastic gravitational waves, can probe very heavy particle physics, with masses of order the Hubble scale during inflation, possibly as high as ~ 10^14 GeV! I will then apply this approach to plausible targets, namely our most ambitious gauge-Higgs theories, extra-dimensional theories such as Orbifold Grand Unification, “dark” gauge theories, and the Standard Model itself, allowing us to probe a variety of spins including the spin-2 Kaluza Klein graviton. The Hierarchy Problem of the Standard Model becomes an asset in this context, readily allowing its particles to have the requisite Hubble-scale masses during inflation, via the mechanism of “heavy-lifting”.