Ranga Diasluck9, a physicist who faced a public reckoning over accusations of research misconduct, is no longer employed by the University of Rochester, a spokeswoman for the institution said Tuesday. Dr. Dias gained prominence for claiming to have

James Bjorkenjilievo online gaming, a theoretical physicist who played a key role in establishing the existence of the subatomic particles called quarks, died on Aug. 6 in Redwood City, Calif. He was 90. His death, in an assisted living facility nea