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Joint Theory Seminar: Jiji Fan

Description Joint Theory Seminar
Speaker: Jiji Fan (Brown U)
Email: jiji_fan@brown.edu
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
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Date Mon, May 21, 2018
Time 6:30am-7:30am PDT
Duration 1 hour
Access Public
Created by High-Energy Seminars
Updated Mon, March 12, 2018 9:14am PDT
Send Reminder Yes  -  1 day 4 hour 0 minutes before start

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