2018-02-05

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[[UTAPwiki/セミナー/初期宇宙・相対論速報]]
Speaker: Minxi He (RESCEU)
Title: Mass hierarchy in multi-field inflation and Higgs-R^2 inflation
Abstract:
Multi-field inflation models are able to give many interesting observable
features which are possibly to be detected by CMB and other observations
in the future. The general multi-field systems are difficult to solve analytically,
but in the presence of mass hierarchy, effective field theory can be used to
analyze the system. I will first review two papers arXiv: 1010.3693 and arXiv:
1205.0710 to derive the general formalism of multi-field inflation and the
effective field theory in the presence of mass hierarchy. Then I will talk
about my recent work, the application of this formalism to the two-field model
combining Higgs inflation and Starobinsky model.

&br;