Monopoles, Duality, and String Theory

  title={Monopoles, Duality, and String Theory},
  author={Joseph Polchinski},
  journal={International Journal of Modern Physics A},
  • 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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