UHM Physics Department Colloquia

Prof. Tsutomu Yanagida on "The Origin of Matter in the Universe"

Thursday, 9 February 2017 from to (Pacific/Honolulu)
at Watanabe Hall ( 102 )
2505 Correa Road Honolulu, HI 96822
Description Paul Dirac proposed the baryon symmetric universe in 1933. This proposal has become very attractive now since it seems that all pre-existing asymmetry would have been diluted if we had an inflationary stage in the early universe.
However, if our universe began baryon symmetric, the tiny imbalance in numbers of baryons and anti-baryons which leads to our existence, must have been generated by some physical processes in the early universe.
In my talk I will show why the small neutrino mass is a key for solving this long standing problem in understanding the universe we observe.