Massless Particles plus Matter in the Rest-Frame Instant Form of Dynamics

TL;DR

This paper explores the dynamics of massless particles combined with matter in the rest-frame instant form, including their Grassmann-valued helicity and quantization, providing a new perspective on relativistic particle interactions.

Contribution

It introduces a parametrized Minkowski framework for massless particles with matter and develops their Grassmann-valued helicity description and quantization methods.

Findings

Successful formulation of massless particles with matter in the rest-frame instant form

Development of Grassmann-valued helicity for massless particles

Quantization approach for these particles

Abstract

After introducing the parametrized Minkowski theory describing a positive-energy scalar massless particle, we study the rest-frame instant form of dynamics of such a particle in presence of another massive one (to avoid the front form of dynamics). Then we describe massless particles with Grassmann-valued helicity and their quantization.