Dr. Maxim Pospelov
Title: Lorentz Violation in Effective
Field Theory and Supersymmetry
Violations of Lorentz symmetry and CPT have been entertained
as possible phenomenological predictions in theories of quantum gravity. In
parallel, various experiments have been searching for the signatures of Lorentz violation. In this talk I describe an
effective field theory approach to the problem, and analyze the structure of Lorentz violating operators in expansion over
the UV scale (M_Planck). I show that the
requirement of supersymmetry imposes strong
constraints on possible form of Lorentz violation: it ensures
the suppression by at least one power of the UV scale, and forbids any
significant modifications of the dispersion relations for particles.