The nine are recipients of the Fundamental Physics Prize, established by Yuri Milner, a Russian physics student who dropped out of graduate school in 1989 and later earned billions investing in Internet companies like Facebook and Groupon.
“It knocked me off my feet,” said Alan H. Guth, a professor of physics at the Massachusetts Institute of Technology who was among the winners. He came up with the idea of cosmic inflation, that there was a period of extremely rapid expansion in the first instant of the universe.