Effective action approach to the dynamical map
High Energy Physics - Theory
2023-09-12 v1
Abstract
The dynamical map represents a fundamental concept in quantum field theory, providing a solution of the field equations in the Fock space of asymptotic fields. In this paper, we show how to express the dynamical map of a scalar field in the language of quantum effective action. This grants us new insights into the study of topological defects in quantum field theory, showing a connection between the usual least-action principle and Umezawa's boson transformation method.
Cite
@article{arxiv.2309.04493,
title = {Effective action approach to the dynamical map},
author = {Marek Lewicki and Luca Smaldone},
journal= {arXiv preprint arXiv:2309.04493},
year = {2023}
}