Discrete theta angle from an O5-plane
Abstract
We consider 5d N = 1 Sp(1) gauge theory based on a brane configuration with an O5-plane. At the UV fixed point, the theory with no matter enjoys enhanced global symmetry SU(2) or U(1) depending on the discrete theta angle θ = 0, π (mod 2 π). A naive brane configuration with an O5-plane, however, does not distinguish two different theories, as it describes the weak coupling region. We devise a technique for computing 5d Seiberg-Witten curve of the two theories from the brane web with an O5-plane. Their Seiberg-Witten curves show that their M5 configurations under the presence of OM5-planes are different. The decompactification limit of each Seiberg-Witten curve also shows distinct phase structures in their Coulomb branch leading to significantly different ( p, q) 5-brane configurations with an O5-plane in the strong coupling region.
- Publication:
-
Journal of High Energy Physics
- Pub Date:
- November 2017
- DOI:
- 10.1007/JHEP11(2017)041
- arXiv:
- arXiv:1707.07181
- Bibcode:
- 2017JHEP...11..041H
- Keywords:
-
- Brane Dynamics in Gauge Theories;
- Field Theories in Higher Dimensions;
- p-branes;
- High Energy Physics - Theory
- E-Print:
- v1: 45 pages, 36 figures, v2: published version, v3: a typo corrected