supergravityn.

1976 D. Z. Freedman et al. in Physical Rev. D. 13 3214 Even early in the development of the Fermi-​Bose supersymmetry concept, it was thought that the new fermionic symmetry transformation might be important for the theory of gravitation. Two similar but apparently inequivalent approaches to this theory of ‘supergravity’ have been formulated.

1980 Nature 21 Feb. 717/3 Known as supergravity, the new theory attempts to treat the familiar gravitational field as only a component part of a more elaborate network of forces and fields.

1996 Proc. Amer. Philos. Soc. 140 286 Recent developments of supersymmetry, supergravity, and superstring theories are all efforts at exploring and exploiting various new aspects of symmetry in field theory.

2001 S. Hawking Universe in Nutshell ii. 52 For a few years, strings reigned supreme and supergravity was dismissed as just an approximate theory, valid at low energy.