Low Energy Effective Theory for Axion Strings
High Energy Physics - Phenomenology
2022-09-21 v3 High Energy Physics - Theory
Abstract
We consider aspects of the low energy description of global cosmic strings. In the non-relativistic limit, we study the extent to which these are described by the combination of the Nambu-Gotto and Kalb-Ramond actions. While in a formal sense this is the case for infiniately long strings, for more realistic situations, the collective coordinates of the system do not provide a complete description for more than brief intervals; as time evolves it becomes necessary to include low momentum goldstone excitations as well.
Cite
@article{arxiv.2111.10942,
title = {Low Energy Effective Theory for Axion Strings},
author = {Michael Dine},
journal= {arXiv preprint arXiv:2111.10942},
year = {2022}
}
Comments
11 pages Reference corrected, comments added to clarify that the focus is on the classical effective field theory; matching to simulations would be of interest but is not the subject here