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Clifford Space as a Generalization of Spacetime: Prospects for QFT of Point Particles and Strings

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The idea that spacetime has to be replaced by Clifford space (C-space) is explored. Quantum field theory (QFT) and string theory are generalized to C-space. It is shown how one can solve the cosmological constant problem and formulate string theory without central terms in the Virasoro algebra by exploiting the peculiar pseudo-Euclidean signature of C-space and the Jackiw definition of the vacuum state. As an introduction into the subject, a toy model of the harmonic oscillator in pseudo-Euclidean space is studied.

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Pavšič, M. Clifford Space as a Generalization of Spacetime: Prospects for QFT of Point Particles and Strings. Found Phys 35, 1617–1642 (2005). https://doi.org/10.1007/s10701-005-6485-x

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