HIP NEWS August 24th 2015
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COSMO-Seminar
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Wednesday 26 August 2015 at 14.15 in A315
Tommi Markkanen (Imperial College London)
Spacetime curvature and the Higgs stability before and after inflation
Abstract: 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 show the significance of backreaction from classical gravity for vacuum stability in the early universe. After introducing the topic of inflationary vacuum stability, we will concentrate on the non-perturbative effects during reheating and show that they may 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.
Fortcoming training for employees
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Welcome to the University
The course is targeted for all new international employees of the University of Helsinki.
Tervetuloa yliopistoon
Kohderyhmä: Yliopiston uudet työntekijät
Finnish Working Culture
The course is targeted for all new international employees of the University of Helsinki.
Prepare for your doctoral defence
Those with dissertation in the near future.
Sign up in http://www.helsinki.fi/trainingcalendar ( Staff Training Calendar HENKKA)
Visitors
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H. Weigert 4.8. – 29.8.2015 (KR)