Supergravity and Physics?

Question

What is, in simple terms, supergravity?

Can I have equation(s) for this type of gravity?

Answer 1

Super Gravity is a theory of physics that combines the two theories of Super Symmetry and General Relativity.

Like any field theory of gravity, a supergravity theory contains a spin-2 field whose quantum is the graviton. Supersymmetry requires the graviton field to have a superpartner. This field has spin 3/2 and its quantum is the gravitino. The number of gravitino fields is equal to the number of supersymmetries. Supergravity theories are often said to be the only consistent theories of interacting massless spin 3/2 fields.