期刊
INTERNATIONAL JOURNAL OF MODERN PHYSICS A
卷 17, 期 28, 页码 4095-4111出版社
WORLD SCIENTIFIC PUBL CO PTE LTD
DOI: 10.1142/S0217751X02010716
关键词
second-class constraints; gauge invariance
For many systems with second-class constraints, the question posed in the title is answered in the negative. We prove this for a range of systems with two second-class constraints. After looking at two examples, we consider a fairly general proof. It is shown that, to unravel gauge invariances in second-class constrained systems, it is sufficient to work in the original phase space itself. Extension of the phase space by introducing new variables or fields is not required.
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