Please join Physics and Philosophy for a Physcis colloquium lecture "A Tale of Two Times" presented by Craig Callender, University of California San Diego on October 24th from 4:00PM to 5:00PM in Barus & Holley, Room 166. Reception to follow immediately afterwards in the Barus & Holley lobby.
Abstract: Programs in quantum gravity differ, but they seem to agree on having profound consequences for time. What consequences? Some programs promise to “save” time from relativity by re-introducing a time that corresponds to our intuitive notion of time flowing. Others promise the opposite: to finish the job that relativity began by eliminating time altogether. I’ll focus on examples of the former and the latter, causal set theory and canonical quantum gravity, respectively. I’ll argue that time is both harder to get rid of and harder to destroy than is commonly thought.
Presented by the Department of Physics.