Quantization of the First-Order Two-Dimensional Einstein-Hilbert Action

Details Quantization of the First-Order Two-Dimensional Einstein-Hilbert Action Quantization of the First-Order Two-Dimensional Einstein-Hilbert Action

2005-10-04

arxiv.org/abs/hep-th/0510031v1

Class.Quant.Grav.23:3037-3042,2006

Physics

High Energy Physics

High Energy Physics - Theory

Scientific paper

A canonical analysis of the first-order two-dimensional Einstein-Hilbert action has shown it to have no physical degrees of freedom and to possess an unusual gauge symmetry with a symmetric field $\xi_{\mu\nu}$ acting as a gauge function. Some consequences of this symmetry are explored. The action is quantized and it is shown that all loop diagrams beyond one-loop order vanish. Furthermore, explicit calculation of the one-loop two-point function shows that it too vanishes, with the contribution of the ghost loop cancelling that of the ``graviton'' loop.

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