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The Subaru Seminar is usually held in Room 104 of the Hilo Base Facility, adjacent to the main lobby. Everyone is welcome to attend. If you are interested in giving a seminar, please contact Subaru seminar organizers (Tomonori Usuda, Kumiko S. Usuda, Naoyuki Tamura) by email : (please change"_at" to @).

April 15, Thursday, at 09:30 am

" Space-Time Duality and Vacuum Energy "

Hirotaka Sugawara

(JSPS Washington Office)

It is well known that one of the most important direct consequences of inflationary universe is that it leads to the flat three dimensional space. This means, theoretically, that the de Sitter Space solution of the Einstein equation gives the flat three dimensional space. I use this fact and extend this to the five dimensional space-time. I find that the the five dimensional anti de Sittter space gives the flat four dimensional space-time, namely, the vanishing cosmological constant. Interesting aspect of this is that it has nothing to do with supersymmetry. I, then consider the contribution of the "instanton" which violates the five dimensional Lorentz symmetry. I get rather satisfactory value for the vacuum energy.

Seminars are also held at JAC, CFHT, and IfA.

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