Of CP and other Gauge Symmetries in String Theory

Abstract

We argue that \CP is a gauge symmetry in string theory. As a consequence, \CP cannot be explicitly broken either perturbatively or non-pertubatively; there can be no non-perturbative \CP-violating parameters. String theory is thus an example of a theory where all $\theta$ angles arise due to spontaneous \CP violation, and are in principle calculable.

8 pages

References in corpus (1)

• Note on Discrete Gauge Anomalies

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