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| 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 picture. |
| 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 |
