Cubic interactions of arbitrary spin fields in 3d flat space

R. R. Metsaev

Published 2020-05-25Version 1

Using light-cone gauge formulation, massive arbitrary spin irreducible fields and massless (scalar and one-half spin) fields in three-dimensional flat space are considered. Both the integer spin and half-integer spin fields are studied. For such fields, we provide classification for cubic interactions and obtain explicit expressions for all cubic interaction vertices. We study two equivalent forms of the cubic interaction vertices which we refer to as first-derivative form and higher-derivative form.