Higher-Derivative Gravitation in Bosonic and Superstring Theories

Details Higher-Derivative Gravitation in Bosonic and Superstring Theories Higher-Derivative Gravitation in Bosonic and Superstring Theories

1995-06-27

arxiv.org/abs/hep-th/9506173v3

Physics

High Energy Physics

High Energy Physics - Theory

8 pages, LaTeX2e and AMS-LaTeX 1.2, Talk presented at SUSY'95, Ecole Polytechnique in Palaiseau, Palaiseau, France, May 15-19,

Scientific paper

A discussion of the number of degrees of freedom, and their dynamical properties, in higher-derivative gravitational theories is presented. The complete non-linear sigma model for these degrees of freedom is exhibited using the method of auxiliary fields. As a by-product we present a consistent non-linear coupling of a spin-2 tensor to gravitation. It is shown that non-vanishing $(C_{\mu\nu\alpha\beta})^{2}$ terms arise in $N=1$, $D=4$ superstring Lagrangians due to one-loop radiative corrections with light field internal lines.

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