Group quantization of parametrized systems I. Time levels

Details Group quantization of parametrized systems I. Time levels Group quantization of parametrized systems I. Time levels

1994-12-17

arxiv.org/abs/gr-qc/9412047v2

J.Math.Phys. 36 (1995) 4612-4638

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

After discussions at Imperial College, a great improvement is achieved. I particular, it is shown that many problems can be so

Scientific paper

10.1063/1.530911

A method of quantizing parametrized systems is developed that is based on a kind of ``gauge invariant'' quantities---the so-called perennials (a perennial must also be an ``integral of motion''). The problem of time in its particular form (frozen time formalism, global problem of time, multiple choice problem) is met, as well as the related difficulty characteristic for this type of theory: the paucity of perennials. The present paper is an attempt to find some remedy in the ideas on ``forms of relativistic dynamics'' by Dirac. Some aspects of Dirac's theory are generalized to all finite-dimensional first-class parametrized systems. The generalization is based on replacing the Poicar\'{e} group and the algebra of its generators as used by Dirac by a canonical group of symmetries and by an algebra of elementary perennials. A number of insights is gained; the following are the main results. First, conditions are revealed under which the time evolution of the ordinary quantum mechanics, or a generalization of it, can be constructed. The construction uses a kind of gauge and time choice and it is described in detail. Second, the theory is structured so that the quantum mechanics resulting from different choices of gauge and time are compatible. Third, a practical way is presented of how a broad class of problems can be solved without the knowledge of explicit form of perennials.

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