Bosonic String in Affine-Metric Curved Space
arXiv:hep-th/0401223 · doi:10.1016/0370-2693(94)91223-8
Abstract
The sigma model approach to the closed bosonic string on the affine-metric manifold is considered. The two-loop metric counterterms for the nonlinear two-dimensional sigma model with affine-metric target manifold are calculated. The correlation of the metric and affine connection is considered as the result of the ultraviolet finiteness (or beta-function vanishing) condition for the nonlinear sigma model. The examples of the nonflat nonRiemannian manifolds resulting in the trivial metric beta-function are suggested.
15 pages, LaTeX
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