Cosmophysics Seminar (Dr. T. Fujita)

Category
Start2017/06/15(Thu) 3:30 PM
End2017/06/15(Thu) 4:30 PM
VenueKenkyu Honkan 1F, Meeting Room 1
TitleGravitational wave production during inflation
SpeakerDr. Tomohiro Fujita (Kyoto University)
Language英語/English
ContactT.Terada(teradat-AT-post.kek.jp)
Website
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Abstract

It is well known that the amplitude of the gravitational wave (GW)
produced during inflation is proportional to the energy scale of
inflation. However, it is true only if (i) GW is described by Einstein
theory (GR) and (ii) the GWs from vaccum fluctuation is dominant. I
will discuss the cases where the above two conditions are not
satisfied. In particular, I will explain the new model in which the
axion-SU(2) coupled system generates GW during inflation and its
observational consequence.

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