Gravity as a Gauge Theory with Spontaneously Broken Internal Super-Poincare Symmetry : Particles and Fields

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概要

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• An effective gauge theory of gravity is constructed with the aid of the method of nonlinear realizations. The internal super-Poincare gauge symmetry breaks down spontaneously to the Lorentz one. The co-frame e^k_μ is constructed out of gauge fields, Nambu-Goldstone fields and a spectator field so that it leads to a super-Poincare gauge invariant metric. This e^k_μ remains invariant under super-transformations, and thus its super-partner is not needed, in contrast to the case of conventional supergravity. Further, the internal supersymmetry does not require photino, Wino, Zino, …, in contrast to the spacetime one. Identities and conservation laws are obtained from the gauge invariance, and these identities restrict the functional dependence of Lagrangian density on field variables. The Noether currents of the Dirac field on the flat spacetime are also discussed.

• 1990-05-25

著者

• Saitoh Hirofumi

  Department Of Cardiac Surgery And Internal Medicine Asahi General Hospital

• Saitoh Hirofumi

  Department of Physics, Rikkyo University

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