Discrete theta angle from an O5-plane

DOI number:10.1007/jhep11(2017)041

Journal:Journal of High Energy Physics

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 2π). 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.

Note:The preprint version is available at https://arxiv.org/abs/1707.07181

Co-author:Hirotaka Hayashi,Sung-Soo Kim,Kimyeong Lee,Futoshi Yagi

Indexed by:SCI

Discipline:Science

Volume:11(2017)

Issue:041

Translation or Not:no

Date of Publication:2017-11-08

Included Journals:SCI

Links to published journals:https://doi.org/10.1007/jhep11(2017)041