|COOKIES: By using this website you agree that we can place Google Analytics Cookies on your device for performance monitoring.|
Stochastic Effects in Hybrid Inflation
If you have a question about this talk, please contact Xingang Chen.
Hybrid inflation is a two-field model where inflation ends due to an instability. In the neighborhood of the instability point, the potential is very flat and the quantum fluctuations dominate over the classical motion of the inflaton and waterfall fields. These fluctuations even determine around which minimum of the potential inflation is likely to end, so in a sense the classical trajectory itself has a quantum origin. In this talk, I will study this regime in the framework of stochastic inflation. After introducing this formalism, I will show how to numerically solve the two coupled Langevin equations controlling the evolution of the fields and present some results. I will be mostly in interested in the probability distributions of the total number of e-folds and of the inflation exit point. I will conclude with discussing the physical consequences of these results, in particular the question of how the quantum diffusion can affect the observable predictions of hybrid inflation.
This talk is part of the DAMTP Friday GR Seminar series.
This talk is included in these lists:
Note that ex-directory lists are not shown.
Other listsCambridge Centre for Risk Studies EPRG Energy and Environment Seminar Series Easter 2009 Economic orthodoxy and barriers to the low-carbon economy
Other talksA short history of the microscope Research Conference and Showcase - Research and Practice: Making the connections A pious home? Italian Renaissance devotional jewellery and amulets What's in my stuff? From Kiiking to Kuzmak Summer Cactus & Succulent Show