Spacetime curvature and the Higgs stability before and after inflation

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• Tommi Markkanen (King's College, London)
• Wednesday 28 October 2015, 13:30-14:30
• Small Lecture Theatre (S06, Poynting [R13]).

If you have a question about this talk, please contact Prof Ian Kenyon.

The best fit values for the SM parameters imply that the potential for the Higgs boson developes a Planck-scale vacuum with negative energy, which may result in decay of the current vacuum state. In this talk we will go through the standard discussion of vacuum (in)stability during inflation and then show the significance of backreaction from classical gravity. After discussing inflationary vacuum stability, we will concentrate on the non-perturbative effects during reheating and show that they may also induce vacuum decay for large inflationary scales. In particular, we conclude that inflation and reheating constrain the non-minimal coupling between the SM Higgs and gravity to be close to 1/6. arXiv:1407.3141 and arXiv:1506.04065.

This talk is part of the Particle Physics Seminars series.

This talk is included in these lists:

• Bham Talks
• Particle Physics Seminars
• Small Lecture Theatre (S06, Poynting [R13])
• What's on in Physics?

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