Reparametrization Invariance as Gauge Symmetry

Details Reparametrization Invariance as Gauge Symmetry Reparametrization Invariance as Gauge Symmetry

1998-05-07

arxiv.org/abs/hep-th/9805040v1

Int.J.Theor.Phys. 38 (1999) 1941-1968

Physics

High Energy Physics

High Energy Physics - Theory

22 pages, LaTex

Scientific paper

Reparametrization invariance being treated as a gauge symmetry shows some specific peculiarities. We study these peculiarities both from a general point of view and on concrete examples. We consider the canonical treatment of reparametrization invariant systems in which one fixes the gauge on the classical level by means of time-dependent gauge conditions. In such an approach one can interpret different gauges as different reference frames. We discuss the relations between different gauges and the problem of gauge invariance in this case. Finally, we establish a general structure of reparametrizations and its connection with the zero-Hamiltonian phenomenon.

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