Abstract:
Quantum mechanical operators and quantum fields are interpreted as realizations of timespace manifolds. Such causal manifolds are parametrized by the classes of the positive unitary operations in all complex operations, i.e. by the homogenous spaces D(n) = GL ( I C n IR)=U(n) with n = 1 for mechanics and n = 2 for relativistic fields. The rank n gives the number of both the discrete and continuous invariants used in the harmonic analysis, i.e. two characteristic masses in the relativistic case. 'Canonical ' field theories with the familiar divergencies are inappropriate realizations of the real 4-dimensional causal manifold D(2). Faithful timespace realizations do not lead to divergencies. In general they are reducible, but nondecomposable- in addition to representations with eigenvectors (states, particle) they incorporate principal vectors without a particle (eigenvector) basis as exemplified by the Coulomb
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