# Tag Info

## About supergravity

Supergravity is a classical supersymmetric unification theory. It appears in low-energy classical limits of .

-Theory unifies classical with Maxwell's classical electromagnetism () by showing that 5-dimensional general relativity is equivalent to 4-dimensional General relativity + 4-dimensional maxwell's classical electromagnetism. Supergravity goes a step ahead by also unifying the and . To do this, however, is also required. However, is a classical theory.

11-dimensional supergravity is the low-energy classical-limit of .