Infinite Component Relativistic Wave Equations
  We construct an infinite component relativistic wave equation which is a linear first order differential equation identical in form to a Dirac like equation, describing composite fields possessing multiple spin and energy states. The main motivation for such a construction is to give a description of Hadronic fields moving along their so called Regge Trajectories, however this may be generalized to other composite fields. In order to construct the equation so that it may accommodate physical states the concept of Spin Frames is introduced, and it is found that such an equation may propagate physical fields whose spin states differ by two units of angular momentum namely $\Delta J=2$. The solution for the free field case is given by boosting a rest frame spinor with the infinite dimensional Lorentz Boost which are constructed as well. Finally we discuss the relevance of the groups GL(4R), and GL(3,1,R) and their appearance with regards to the wave equation at hand. 
Eyal Gilboa