Noether Gauge Symmetry Approach in f(R) Gravity

Understand

We discuss the f(R) gravity model in which the origin of dark energy is identified as a modification of gravity.

• The Noether symmetry with gauge term is investigated for the f(R) cosmological model.
• By utilization of the Noether Gauge Symmetry (NGS) approach, we obtain two exact forms f(R) for which such symmetries exist.
• Further it is shown that these forms of f(R) are stable.