R as the String Theory Lagrangian
Abstract
The string theory inspired Lagrangian yields, in addition to conventional gravitation, an antisymmetric field and a scalar field. It is shown that all of these fields result from the curvature scalar of spacetime with torsion, in which the torsion is totally anti-symmetric and is built from skew derivatives of a scalar and second rank tensor potential. The tensor potential is created from the intrinsic spin of a particle, and the scalar field arises from the Dirac pseudoscalar invariant. It is shown that this theory gives the same Lagrangian as the low energy string theory limit, provided that the gravitational constant is a function of the scalar field. It also shown that both the scalar field and the variation of the gravitational constant are extremely small.
- Publication:
-
APS April Meeting Abstracts
- Pub Date:
- April 1998
- Bibcode:
- 1998APS..APR.I1004H