Supersymmetry, intrinsic symmetry and kinematics at short distances

Consequences produced by the assumption that the space-time geometry is not flat at short distances are studied. Large-scale relativistic invariance leads to treating fields on bundles with a base being just the Minkovsky space. Change of the kinematical symmetry at short distances manifests as an additional intrinsic symmetry of asymptoti; states. A simple global supersymmetric model is used as an example to study the above mechanism. It is proposed to enlarge the intrinsic symmetry of extended supersymmetrical theories, while the spin content being unaltered. The nature of the anomalously large cosmological term in models of the extended supergravity is discussed