Massive to Massless by Applying a Nonlocal Field Redefinition
High Energy Physics - Theory
2023-02-21 v3 High Energy Physics - Phenomenology
Classical Physics
Abstract
The invariance of physical observables like particle's mass under a local field redefinition is a well-known and important property of quantum field theory. In this paper, on the other hand, we investigate nonlocal field redefinitions eliminating a physical observable from a theory. Indeed, by giving explicit examples, we present invertible nonlocal field redefinitions reducing a massive theory to the massless one, and vice versa. The studied examples are: classical harmonic oscillator, the scalar field theory, and the Dirac field theory.
Cite
@article{arxiv.2212.07042,
title = {Massive to Massless by Applying a Nonlocal Field Redefinition},
author = {Mojtaba Najafizadeh},
journal= {arXiv preprint arXiv:2212.07042},
year = {2023}
}
Comments
11 pages, no figure. v2: references and clarifications added, v3: matches published version in PRD