Covariant Hamiltonian field theory. Path integral quantization

Details Covariant Hamiltonian field theory. Path integral quantization Covariant Hamiltonian field theory. Path integral quantization

2004-02-06

arxiv.org/abs/hep-th/0402057v2

Int.J.Theor.Phys. 43 (2004) 1317-1333

Physics

High Energy Physics

High Energy Physics - Theory

18 pp

Scientific paper

10.1023/B:IJTP.0000048617.61374.

The Hamiltonian counterpart of classical Lagrangian field theory is covariant Hamiltonian field theory where momenta correspond to derivatives of fields with respect to all world coordinates. In particular, classical Lagrangian and covariant Hamiltonian field theories are equivalent in the case of a hyperregular Lagrangian, and they are quasi-equivalent if a Lagrangian is almost-regular. In order to quantize covariant Hamiltonian field theory, one usually attempts to construct and quantize a multisymplectic generalization of the Poisson bracket. In the present work, the path integral quantization of covariant Hamiltonian field theory is suggested. We use the fact that a covariant Hamiltonian field system is equivalent to a certain Lagrangian system on a phase space which is quantized in the framework of perturbative field theory. We show that, in the case of almost-regular quadratic Lagrangians, path integral quantizations of associated Lagrangian and Hamiltonian field theories are equivalent.

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