Tree string generated corrections to Einstein gravity from the sigma model approach

Abstract

We discuss the calculation of the three-loop β-function for the twodimensional non-linear σ-model with torsion. It satisfies an integrability condition which leads to the (α′)^1,2-corrections (to Einstein gravity) generated from the theory of closed bosonic strings at the tree level. Some applications of these results are briefly discussed.

Original language	English
Pages (from-to)	193-202
Number of pages	10
Journal	General Relativity and Gravitation
Volume	22
Issue number	2
DOIs	https://doi.org/10.1007/BF00756208
Publication status	Published - Feb 1990

ASJC Scopus subject areas

Physics and Astronomy(all)

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10.1007/BF00756208

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title = "Tree string generated corrections to Einstein gravity from the sigma model approach",

abstract = "We discuss the calculation of the three-loop β-function for the twodimensional non-linear σ-model with torsion. It satisfies an integrability condition which leads to the (α′)1,2-corrections (to Einstein gravity) generated from the theory of closed bosonic strings at the tree level. Some applications of these results are briefly discussed.",

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year = "1990",

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AB - We discuss the calculation of the three-loop β-function for the twodimensional non-linear σ-model with torsion. It satisfies an integrability condition which leads to the (α′)1,2-corrections (to Einstein gravity) generated from the theory of closed bosonic strings at the tree level. Some applications of these results are briefly discussed.

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