Collinear Asymptotic Dynamics for Massive Particles. Reggeization and Eikonalization

TL;DR

This paper investigates the collinear high momentum behavior of massive particles, adapting Hamiltonian methods to understand infrared divergences and emphasizing the importance of time ordering in dressing operators.

Contribution

It introduces a novel approach to analyze collinear asymptotic dynamics of massive particles, highlighting the role of time ordering in dressing operators.

Findings

Enhanced understanding of infrared divergences in collinear regimes

Adaptation of Hamiltonian methods for massive particle dynamics

Emphasis on time ordering of dressing operators

Abstract

The dynamics of massive particles in the collinear high momentum regime is investigated. Methods hitherto exploiting large time asymptotic Hamiltonians in the Dirac picture for the treatment of infrared divergences are adapted to the collinear asymptotic dynamics. The essential role of time ordering of the dressing operators is brought out.