Cauchy problem for Dirac equations with Chern-Simons-Proca gauge field

Abstract

In this paper, we consider the Cauchy problem of Dirac equations with Chern-Simons-Proca (CSP) gauge field. We investigate global well-posedness and scattering theory for the solutions with small initial data. The main difficulties come from the fact that Strichartz estimate does not work and an absence of spinorial null structure which disturbs to show the global existence. To overcome these obstacles, we employ the space-time resonance argument introduced by Germain-Masmoudi-Shatah (2009, 2012, 2012), as well as various resonance functions derived from Dirac operators and the normal form approach. Our argument enables us to establish the global in time existence of solutions to Dirac equations with the CSP gauge field. As a byproduct of our argument, we obtain the scattering results.