Gravitation, torsion, and string theory

Details Gravitation, torsion, and string theory Gravitation, torsion, and string theory

Jun 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996gregr..28..749h&link_type=abstract

General Relativity and Gravitation, Volume 28, Issue 6, pp.749-757

Physics

15

Scientific paper

The low energy effective Lagrangian of string theory presents us with not only gravity, but the dilaton and the antisymmetric field as well. It is shown that a Brans-Dicke generalization of a metric theory of gravity with torsion that is derived as the exterior derivative of a potential is equivalent to the low energy string theory Lagrangian. This gives all of the fields a physical interpretation in four dimensions and provides an indication that the dilaton representssmall corrections to general relativity at large distances.

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