Softly Broken MQCD and the Theta Angle
High Energy Physics - Theory
2009-10-30 v2
Abstract
We consider a family of non-supersymmetric MQCD five-brane configurations introduced by Witten, and discuss the dependence of the curves on the microscopic theta angle and its relation with CP. We find evidence for a non-trivial spectral flow of the curves (vacua) and for the level-crossing of adjacent curves at a particular value of the theta angle, with spontaneous breaking of CP symmetry, providing an MQCD analogue of the phase transitions in theta proposed by 't Hooft.
Cite
@article{arxiv.hep-th/9711030,
title = {Softly Broken MQCD and the Theta Angle},
author = {J. L. F. Barbon and A. Pasquinucci},
journal= {arXiv preprint arXiv:hep-th/9711030},
year = {2009}
}
Comments
12 pages, references added. Version published in Phys. Lett. B