Casimir effect for nucleon parity doublets
High Energy Physics - Phenomenology
2019-03-27 v2 High Energy Physics - Lattice
High Energy Physics - Theory
Nuclear Theory
Abstract
Finite-volume effects for the nucleon chiral partners are studied within the framework of the parity-doublet model. Our model includes the vacuum energy shift for nucleons, which is the Casimir effect. We find that for the antiperiodic boundary the finite-volume effect leads to chiral symmetry restoration, and the masses of the nucleon parity doublets degenerate. For the periodic boundary, the chiral symmetry breaking is enhanced, and the masses of the nucleons also increase. We also discuss the finite-temperature effect and the dependence on the number of compactified spatial dimensions.
Cite
@article{arxiv.1812.10964,
title = {Casimir effect for nucleon parity doublets},
author = {Tsutomu Ishikawa and Katsumasa Nakayama and Kei Suzuki},
journal= {arXiv preprint arXiv:1812.10964},
year = {2019}
}
Comments
14 pages, 11 figures, 3 tables; published version