Improved BFT quantization of O(3) nonlinear sigma model

Details Improved BFT quantization of O(3) nonlinear sigma model Improved BFT quantization of O(3) nonlinear sigma model

1999-08-17

arxiv.org/abs/hep-th/9908112v1

Phys.Rev. D60 (1999) 125005

Physics

High Energy Physics

High Energy Physics - Theory

17 pages, revtex, to appear in Phys. Rev. D

Scientific paper

10.1103/PhysRevD.60.125005

We newly apply the improved Batalin-Fradkin-Tyutin(BFT) Hamiltonian method to the O(3) nonlinear sigma model, and directly obtain the compact form of nontrivial first class Hamiltonian by introducing the BFT physical fields. Furthermore, following the BFV formalism, we derive the BRST invariant gauge fixed Lagrangian through the standard path-integral procedure. Finally, by introducing collective coordinates, we also study a semi-classical quantization of soliton background to conclude that the spectrum of zero modes are unchanged through the BFT procedure.

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