Quantum physics as the projective representation theory of Noether symmetries

Details Quantum physics as the projective representation theory of Noether symmetries Quantum physics as the projective representation theory of Noether symmetries

1999-08-30

arxiv.org/abs/math-ph/9908028v1

Physics

Mathematical Physics

46 pages, LaTex

Scientific paper

I construct lowest-energy representations of non-centrally extended algebras of Noether symmetries, including diffeomorphisms and reparametrizations of the observer's trajectory. This may be viewed as a new scheme for quantization. First classical physics is formulated as the cohomology of a certain Koszul-Tate (KT) complex, using not only fields and antifields but also their conjugate momenta. Then all fields are expanded in a Taylor series around the observer's present position, and terms of order higher than p are truncated. Finally, quantization is carried out by replacing Poisson brackets by commutators and imposing the KT cohomology in Fock space. This procedure is consistent for finite p, but the limit p\to\infty leads to difficulties.

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