Higher-derivative gravity, surface terms, and string theory
- 15 July 1987
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review D
- Vol. 36 (2) , 392-396
- https://doi.org/10.1103/physrevd.36.392
Abstract
We consider adding Euler densities to the Einstein action as new gravity interactions in higher-dimensional theories. When the appropriate surface terms are included, the surface geometry is sufficient data for the boundary-value problem associated with the new Lagrangians. We also discuss the relevance of such interactions in the context of string theory.Keywords
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