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

Research output: Contribution to journalArticle

3 Citations (Scopus)

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 languageEnglish
Pages (from-to)193-202
Number of pages10
JournalGeneral Relativity and Gravitation
Volume22
Issue number2
DOIs
Publication statusPublished - Feb 1990

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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