Bihamiltonian approach to the closed string model in the background fields

Details Bihamiltonian approach to the closed string model in the background fields Bihamiltonian approach to the closed string model in the background fields

2001-12-25

arxiv.org/abs/hep-th/0112234v1

Physics

High Energy Physics

High Energy Physics - Theory

8 pages, espcrs2 style, to be appear in the Proceedings of the International Workshop "Supersymmetries and Quantum symmetries"

Scientific paper

The closed string model in the background gravity field and the antisymmetric B-field is considered as the bihamiltonian system in assumption,that string model is the integrable model for particular kind of the background fields. It is shown, that bihamiltonity is origin of two types of the T-duality of the closed string models. The dual nonlocal Poisson brackets, depending of the background fields and of their derivatives, are obtained. The integrability condition is formulated as the compatibility of the bihamoltonity condition and the Jacobi identity of the dual Poisson bracket. It is shown, that the dual brackets and dual hamiltonians can be obtained from the canonical (PB) and from the initial hamiltonian by imposing of the second kind constraints on the initial dynamical system, on the closed string model in the constant background fields, as example. The closed string model in the constant background fields is considered without constraints, with the second kind constraints and with first kind constraints as the B-chiral string. The two particles discrete closed string model is considered as two relativistic particle system to show the difference between the Gupta-Bleuler method of the quantization with the first kind constraints and the quantization of the Dirac bracket with the second kind constraints.

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