T-duality

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Notion

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Science and technology

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What Wikipedia says

In theoretical physics, T-duality (short for target-space duality) is an equivalence of two physical theories, which may be either quantum field theories or string theories. In the simplest example of this relationship, one of the theories describes strings propagating in spacetime shaped like a circle of some radius

Excerpt from the Wikipedia article “T-duality”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Andrius.v, CC BY 3.0, via Wikimedia Commons.