Noether Symmetries as a geometric criterion to select theories of gravity

Understand

We review the {\it Noether Symmetry Approach} as a geometric criterion to select theories of gravity.

• Specifically, we deal with Noether Symmetries to solve the field equations of given gravity theories.
• The method allows to find out exact solutions, but also to constrain arbitrary functions in the action.
• Specific cosmological models are taken into account.