The Barrett–Crane model is a model in quantum gravity, first published in 1998, which was defined using the Plebanski action. The B {\displaystyle B} field in the action is supposed to be a s o ( 3 , 1 ) {\displaystyle so(3,1)} -valued 2-form, i.e.
The Barrett–Crane model is a model in quantum gravity, first published in 1998, which was defined using the Plebanski action. The B {\displaystyle B} field in the action is supposed to be a s o ( 3 , 1 ) {\displaystyle so(3,1)} -valued 2-form, i.e.
Source: Wikipedia "Barrett–Crane model" · CC BY-SA 4.0
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