# Monopoles, Duality, and String Theory

@article{Polchinski2004MonopolesDA,
title={Monopoles, Duality, and String Theory},
author={Joseph Polchinski},
journal={International Journal of Modern Physics A},
year={2004},
volume={19},
pages={145-154}
}
• J. Polchinski
• Published 4 April 2003
• Physics
• International Journal of Modern Physics A
Dirac showed that the existence of magnetic monopoles would imply quantization of electric charge. I discuss the converse, and propose two 'principles of completeness' which I illustrate with various examples. Presented at the Dirac Centennial Symposium, Tallahassee, Dec. 6-7, 2002.

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