Hamiltonian systems with boundaries

Abstract

Lately, to provide a solid ground for quantization of the open string theory with a constant B-field, it has been proposed to treat the boundary conditions as hamiltonian constraints. It seems that this proposal is quite general and should be applicable to a wide range of models defined on manifolds with boundaries. The goal of the present paper is to show how the boundary conditions can arise as constraints in a purely algebraic fashion within the Hamiltonian approach without any reference to the Lagrangian formulation of the theory. The construction of the boundary Dirac brackets is also given and some subtleties are pointed out. We consider four examples of field theories with boundaries: the topological sigma model, the open string theory with and without a constant $B$-field and electrodynamics with topological term. A curious result for electrodynamics on a manifold with boundaries is presented.

19 pages, latex, version to appear in JHEP

References in corpus (3)

• Canonical Quantization of Open String and Noncommutative Geometry
• Noncommutative open strings from Dirac quantization
• Family of Boundary Poisson Brackets

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• Canonical analysis of field theories in the presence of boundaries: Maxwell+Pontryagin
• Poisson Brackets, Strings and Membranes
• String non(anti)commutativity for Neveu-Schwarz boundary conditions
• Constrained field theories on spherically symmetric spacetimes with horizons
• Weakly Isolated Horizons: $3+1$ decomposition and canonical formulations in self-dual variables
• Constrained field theories on Kerr backgrounds
• Hamiltonian BRST formalism for gauge fields on black hole spacetimes