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GPPU Seminar

Echo from the Universe: Cosmological Gravitational Waves

Ryo Namba
(McGill University, Canada)


Date

14:00-16:00, March 12th, 2019

Place

Room 745, Science Complex B (H-03) map

Abstract

Cosmology as the science on the Universe in its earliest stage is where studies of the largest observable scales meet those of the smallest. Our Universe was once smaller than the size of an atom, and processes involving elementary particles played a vital role. Seeds of the large-scale structure of the Universe and all the matter we observe today were produced in the primordial era. How, however, can we explore such processes in such a long distant past? An important, newly equipped tool is so-called gravitational waves. Their existence has been observationally proven recently, 100 years after Einstein’s original prediction. Their ability to travel through spacetime without disturbance makes it a powerful probe to “hear” the echoes of the primordial Universe. This seminar is to review general aspects of gravitational waves in cosmology and to discuss their potential signals from particle processes at the dawn of our Universe.

Point

GASP 1

Contact: Yusuke Tanimura (tanimura [at] nucl.phys.tohoku.ac.jp)