مشخصات پژوهش

In this paper, we use the Hojman symmetry approach to find new (2 + 1)-dimensional f(R) gravity solutions, in comparison to Noether symmetry approach. In the special case of Hojman symmetry vector X = R, we recover (2 + 1)-dimensional Ba˜ nados– Teitelboim–Zanelli (BTZ) black hole and generalized (2+1)-dimensional BTZ black hole solutions, obtained by Noether symmetry approach, and the interesting point is that the cosmological constant is appeared as the direct manifestation of Hojman symmetry.