Vacuum polarisation without infinities
Abstract
In honour of Detlef D\"urr, we report on a mathematical rigorous computation of the electric vacuum polarisation current and extract the well-known expression for the second order perturbation. Intermediate steps in the presented calculation demonstrate, to the knowledge of the authors for the first time, mathematical rigorous versions of the combined dimensional and Pauli-Villars regularisation schemes. These are employed as computational tools to infer convenient integral representations during the computation. The said second order expression is determined up to a remaining degree of freedom of a real number -- without ill-defined terms from start to end.
Keywords
Cite
@article{arxiv.2307.02233,
title = {Vacuum polarisation without infinities},
author = {Dirk - André Deckert and Franz Merkl and Markus Nöth},
journal= {arXiv preprint arXiv:2307.02233},
year = {2023}
}
Comments
14 pages, for the conference proceedings of the Laws of Nature Conference 2022 remembering Detlef D\"urr