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arXiv · 1802.00444

Higgscitement: Cosmological Dynamics of Fine Tuning

Mustafa A. Amin·JiJi Fan·Kaloian D. Lozanov·Matthew Reece
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Abstract

The Higgs potential appears to be fine-tuned, hence very sensitive to values of other scalar fields that couple to the Higgs. We show 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. We find 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.

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Mustafa A. Amin, JiJi Fan, Kaloian D. Lozanov, Matthew Reece. 2018-02-01. Higgscitement: Cosmological Dynamics of Fine Tuning. https://doi.org/10.1103/physrevd.99.035008

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