QCD domain walls, Chern-Simons theories and holography
Abstract
Massive QCD at breaks CP spontaneously and admits domain walls whose dynamics and phases depend on the number of flavors and their masses. We discuss these issues within the Witten-Sakai-Sugimoto model of holographic QCD. Besides showing that this model reproduces all QCD expectations, we address two interesting claims in the literature. The first is about the possibility that the QCD domain-wall theory is fully captured by three-dimensional physics, only. The second regards the existence of quantum phases in certain Chern-Simons theories coupled to fundamental matter. Both claims are supported by the string theory construction.
Keywords
Cite
@article{arxiv.1806.08292,
title = {QCD domain walls, Chern-Simons theories and holography},
author = {Riccardo Argurio and Matteo Bertolini and Francesco Bigazzi and Aldo L. Cotrone and Pierluigi Niro},
journal= {arXiv preprint arXiv:1806.08292},
year = {2018}
}
Comments
25 pages, 2 figures. v2: refs added, typos corrected, some clarifications in section 3. v3: minor improvements, ref added