Program

I.1 -- Invited, NCTP-42

Date: Monday, 31 July 2017

Time: 10h30 - 11h00

On the validity of cosmic no-hair conjecture in an anisotropic inflationary model

Tuan Q. Do

Faculty of Physics, VNU University of Science, Vietnam National University, Hanoi, Vietnam

We will present main results of our recent investigations on the validity of cosmic no-hair conjecture proposed by Hawking and his colleagues long time ago in the framework of anisotropic inflationary model proposed by Kanno, Soda, and Watanabe. As a result, we will show that the cosmic no-hair conjecture seems to be generally violated in the Kanno-Soda-Watanabe model for both canonical and non-canonical scalar fields due to the existence of a non-trivial coupling term between scalar and electromagnetic fields. However, we will also prove that the validity of the cosmic no-hair conjecture will be ensured once an unusual scalar field called the phantom field, whose kinetic energy term is negative definite, is introduced into the Kanno-Soda-Watanabe model.

Presenter: Đỗ Quốc Tuấn