Time: 11am
Location: 4N12
Title: Is the scattering amplitude analytic in a field theory with compact space coordinate?
Abstract: It is now accepted that theories in D>4 play an important role in our efforts to unify fundamental forces. At low energies the extra spatial dimensions must be compactified to describe physics experiments in accessible energies. There are models where the radius of compact dimensions could be large. The phenomenology has been studied. Khuri examined analytcity properties of scattering amplitude in a nonrelativistic potential model with a compact dimension and showed that the amplitude in nonanalytic. If such behavior persists in relatvistic QFT there will be serious problem. We address this issue.
Date of event:
Thu, 2019-10-31 (All day)
