Boundary conditions as Dirac constraints

In this article we show that boundary conditions can be treated as Lagrangian and Hamiltonian constraints. Using the Dirac method, we find that boundary conditions are equivalent to an infinite chain of second class constraints, which is a new feature in the context of constrained systems. Construct...

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Bibliographic Details
Published inThe European physical journal. C, Particles and fields Vol. 19; no. 2; pp. 383 - 390
Main Authors Sheikh-Jabbari, M.M., Shirzad, A.
Format Journal Article
LanguageEnglish
Published Heidelberg Springer Nature B.V 01.02.2001
Subjects
Boundary conditions
Brackets
Constraints
Counting
Field theory
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Summary:In this article we show that boundary conditions can be treated as Lagrangian and Hamiltonian constraints. Using the Dirac method, we find that boundary conditions are equivalent to an infinite chain of second class constraints, which is a new feature in the context of constrained systems. Constructing the Dirac brackets and the reduced phase space structure for different boundary conditions, we show why mode expanding and then quantizing a field theory with boundary conditions is the proper way. We also show that in a quantized field theory subjected to the mixed boundary conditions, the field components are non-commutative.
ISSN:1434-6044
1434-6052
DOI:10.1007/s100520100590