Physical implications of a fundamental period of time

Theoretical Physics Division seminar
Speaker and affiliation: 
Martin Bojowald ( Pennsylvania State University )
Wed, 2021-10-27 14:15 to 15:15

If time is described by a fundamental process rather than a coordinate, it interacts with any physical system that evolves in time. This talk will introduce the resulting dynamics and show that it is consistent with observations provided the fundamental period T is sufficiently small. Using the current accuracy of atomic clocks, an upper bound of T<10^(-33)s is obtained, which is five orders of magnitude below distance measurements at high-energy accelerators. A fundamental period of time could also have additional implications for lab experiments or cosmological observations.