Doubly Special Relativity

Doubly special relativity (DSR)— also called deformed special relativity or, by some, extra-special relativity — is a modified theory of special relativity in which there is not only an observer-independent maximum velocity (the speed of light), but an observer-independent maximum energy scale and minimum length scale (the Planck energy and Planck length).

Read more about Doubly Special Relativity:  History, Main, Predictions, De Sitter Relativity

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