Supersymmetric Structure of Spacetime and Mattre –superon-graviton Model–

A unified description of spacetime and matter is proposed by using a single irreducible representation of SO(10) Super-Poincaré algebra(SO(10)SPA). All (observed) elementary particles except the graviton are the (massless) eigenstates of SO10)SPA composed of fundamental Nambu-Goldstone fermions with spin 1/2, superons associating with the spontaneous breakdown of the supertranslation of the spacetime. The systematic investigations of the standard model(SM) and SU(5)GUT by using superon diagrams may reveal the generation structure, the stability of the proton, K0−K 0 , B0−B 0 and D0−D 0 mixings, CP-violation, the atmospheric and solar neutrino deficits and the absence of the electroweak lepton-flavor-mixing. The fundamental action of the superon-graviton model(SGM) for spacetime and matter is proposed, which is invariant under a new supersymmetry. ∗Permanent address/e-mail: [email protected] PACS:12.60.Jv, 12.60.Rc, 12.10.-g /