Natural Models of Inflation

October 11, 2012

Who: Ole Svendsen (CP3-Origins)
When: Wednesday, October 17, 2012 at 14:00
Where: FKF’s meeting room

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Ole Svendsen defends his master thesis on Natural Models of Inflation.

Ole’s thesis advisor is Francesco Sannino. Co-advisor is Martin Sloth.


This project explore the possibility that the inflaton, the particle responsible for inflation, could be a composite state. The inflaton is traditionally modelled as a fundamental scalar, but only one possible fundamental scalar have yet been discovered, making an alternative attractive. Working in different particle setups I will show that inflation from a composite inflaton is a valid alternative to the fundamental scalar inflaton and that it might even be a more natural way to explain an inflationary era.

I show that inflation with a composite inflaton can arise from technicolor models and from pure Yang-Mills theories. Furthermore the scale of the effective description of such theories are the Grand Unification scale, insuring a valid effective description through the inflationary era. I describe three models, at this point two of them are working theories of inflation, with one of them not yet excluded by experiments.

The thesis is available as a PDF file.