Bosonic String in Affine - Metric Curved Space
نویسنده
چکیده
The sigma model approach to the closed bosonic string on the affine-metric manifold is considered. The two-loop metric counterterms for the nonlinear twodimensional sigma model with affine-metric target manifold are calculated. The correlation of the metric and affine connection is considered as the result of the conformal invariance condition for the nonlinear sigma model. The examples of the nonflat nonRiemannian manifolds resulting in the trivial metric beta-function are suggested.
منابع مشابه
Quantum Dissipative Systems. Ii. String in a Curved Affine--metric Spacetime
A closed bosonic string in a curved affine--metric spacetime is considered as an example of dissipative quantum field theory. The eonformal anomaly of the trace of the energy--momentum tensor for the string on the affine--metrie manifold is investigated. The two-loop metric beta function for the two-dimensional nonlinear dissipative sigma model is calculated. Examples of nonflat manifolds that ...
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