Essay Abstract
The symmetrization postulate and the associated Bose/Fermi (anti)-commutators for field mode operators are among the pillars on which local quantum field theory lays its foundations. They ultimately determine the structure of Fock space and are closely connected with the local properties of the fields and with the action of symmetry generators on observables and states. We here show that the quantum field theory describing a relativistic particle coupled to three dimensional Einstein gravity as a topological defect must be constructed using a deformed algebra of creation and annihilation operators. This reflects a non-trivial group manifold structure of the classical momentum space and a modification of the Leibniz rule for the action of symmetry generators governed by Newton's constant. We outline various arguments suggesting that, at least at the qualitative level, these three-dimensional results could also apply to real four-dimensional world thus forcing us to re-think the ordinary multiparticle structure of quantum field theory and many of the fundamental aspects connected to it.
Author Bio
Dr. Arzano is a researcher in theoretical physics at the "Sapienza" University of Rome in Italy. He obtained his PhD from the University of North Carolina at Chapel Hill and has worked as a Postdoctoral Researcher at the Perimeter Institute for Theoretical Physics in Canada and as a Marie Curie Fellow at Institute for Theoretical Physics at Utrecht University, The Netherlands. Part of his current research revolves around the question of which of the fundamental pillars of our current description of high energy physics can or must be rethought when (quantum) gravity enters the picture.