The Plebanski action extended to a unification of gravity and Yang-Mills theory - High Energy Physics - TheoryReport as inadecuate




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Abstract: We study a unification of gravity with Yang-Mills fields based on a simpleextension of the Plebanski action to a Lie group G which contains the locallorentz group. The Coleman-Mandula theorem is avoided because the theory has noglobal spacetime symmetry. This may be applied to Lisi-s proposal of an E8unified theory, giving a fully E8 invariant action. The extended form of thePlebanski action suggests a new class of spin foam models.



Author: Lee Smolin

Source: https://arxiv.org/



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