We study four-dimensional systems of global, axion, and local strings. By using the path integral formalism, we derive the dual formulation of these systems, where Goldstone bosons, axions, and massive vector bosons are described by an antisymmetric tensor field, and strings appear as sources for this tensor field. We also show how a magnetic monopole attached to a local string is described in the dual formulation. We conclude with some remarks.

• Received 28 January 1993

DOI:https://doi.org/10.1103/PhysRevD.48.2493