Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2001-05-13
Physics
High Energy Physics
High Energy Physics - Phenomenology
10 pages, LaTeX. Report presented at the XI-th Int. School "Particles and Cosmology", Baksan Valley, 18-24 April, 2001
Scientific paper
It is conjectured that the symplectic structure of space-time is superior to the metric one. Instead of the commonly adopted pseudo-orthogonal groups SO(1,d-1), d\ge4, the complex symplectic ones Sp(2l,C), l\ge1 are proposed as the local structure groups of the extended space-time. A discrete series of the metric space-times of the particular dimensionalities d=4l^2 and signatures, with l(2l-1) time and l(2l+1) spatial directions, defined over the set of the Hermitian second-rank spin-tensors is proposed as an alternative to the pseudo-Euclidean space-times with extra dimensions. The one-dimensional time-like direction remaining invariant under fixed boosts makes it possible the non-relativistic causality description despite the presence of extra times.
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