# 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} }

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.

## 141 Citations

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Abstract
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- 2011

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### Duality and axionic weak gravity

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The axionic weak gravity conjecture predicts the existence of instantons
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### Introduction to magnetic monopoles

- Physics
- 2012

One of the most basic properties of magnetism is that a magnet always has two poles, north and south, which cannot be separated into isolated poles, i.e. magnetic monopoles. There are strong…

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The Swampland program aims to distinguish effective theories which can be completed into quantum gravity in the ultraviolet from those which cannot. This article forms an introduction to the field,…

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