# 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).

### Other articles related to "doubly special relativity, special relativity, special, relativity, doubly special":

Special Relativity (alternative Formulations) - Doubly Special Relativity
... Doubly special relativity (DSR) is a modified theory of special relativity in which there is not only an observer-independent maximum velocity (the speed of light), but an ... If Special Relativity is to hold up exactly to this scale, different observers would observe Quantum Gravity effects at different scales, due to the Lorentz-FitzGerald contraction, in ... A drawback of the usual doubly special relativity models is that they are valid only at the energy scales where ordinary special relativity is supposed to ...
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Doubly Special Relativity - De Sitter Relativity
... Since the de Sitter group naturally incorporates an invariant length–parameter, de Sitter relativity can be interpreted as an example of doubly special ... There is a fundamental difference, though whereas in all doubly special relativity models the Lorentz symmetry is violated, in de Sitter relativity it remains as a physical symmetry ... A drawback of the usual doubly special relativity models is that they are valid only at the energy scales where ordinary special relativity is supposed to break down, giving ...
De Sitter Invariant Special Relativity - Introduction - Doubly Special Relativity
... naturally incorporates an invariant length–parameter, de Sitter relativity can be interpreted as an example of the so-called doubly special relativity ... There is a fundamental difference, though whereas in all doubly special relativity models the Lorentz symmetry is violated, in de Sitter relativity it remains as a physical symmetry ... A drawback of the usual doubly special relativity models is that they are valid only at the energy scales where ordinary special relativity is ...

### Famous quotes containing the words relativity, doubly and/or special:

By an application of the theory of relativity to the taste of readers, to-day in Germany I am called a German man of science, and in England I am represented as a Swiss Jew. If I come to be regarded as a bête noire the descriptions will be reversed, and I shall become a Swiss Jew for the Germans and a German man of science for the English!
Albert Einstein (1879–1955)

A man calumniated is doubly injured—first by him who utters the calumny, and then by him who believes it.
Herodotus (c. 484–425 B.C.)

With a generous endowment of motherhood provided by legislation, with all laws against voluntary motherhood and education in its methods repealed, with the feminist ideal of education accepted in home and school, and with all special barriers removed in every field of human activity, there is no reason why woman should not become almost a human thing. It will be time enough then to consider whether she has a soul.
Crystal Eastman (1881–1928)