On Two-Loop Effective Action of 2D Sigma Model
High Energy Physics - Theory
2024-01-19 v1 Mathematical Physics
math.MP
Abstract
In this paper, we study two-loop contribution to the effective action of a two-dimensional sigma model. We derive a new formula, which can be applicable to a regularization of general type. As examples, we obtain known results for dimensional regularization and investigate new types of cutoff one. Also, we discuss non-local contributions and restrictions on the regularization.
Keywords
Cite
@article{arxiv.2304.02374,
title = {On Two-Loop Effective Action of 2D Sigma Model},
author = {P. V. Akacevich and A. V. Ivanov},
journal= {arXiv preprint arXiv:2304.02374},
year = {2024}
}
Comments
LaTeX, 10 pages, 3 figures