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High Energy

Joint Theory Seminar: Jiji Fan

Recent Papers of Jiji Fan

Description: Joint Theory Seminar
Speaker: Jiji Fan (Brown U)
Title: Higgscitement: Cosmological Dynamics of Fine Tuning
Host: Xiaochuan Lu
Room: 432
Abstract: The Higgs potential appears to be fine-tuned, hence very sensitive to values of other scalar fields that couple to the Higgs. I will discuss that this feature can lead to a new epoch in the early universe featuring violent dynamics coupling the Higgs to a scalar modulus. The oscillating modulus drives tachyonic Higgs particle production. I will present a simple parametric understanding of when this process can lead to rapid modulus fragmentation, resulting in gravitational wave production. A nontrivial equation-of- state arising from the nonlinear dynamics also affects the time elapsed from inflation to the CMB, influencing fits of inflationary models. Supersymmetric theories automatically contain useful ingredients for this
Date: Monday, May 21, 2018
Time: 1:30pm-2:30pm
Duration: 60 minutes
Access: Public
Created by: High-Energy Seminars
Updated: Monday, March 12, 2018 4:14pm
Send Reminder: Yes  -  1 day 4 hours before event

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