تقارن نوتر در كيهان شناسي تانسور - اسكالر f(R)

Noether symmetry in f(R) Scalar-tensor cosmology

در این مقاله نظریه تعمیم یافته گرانشی f(R) را كه یك میدان اسكالر به طور غیر عمد - كمینه به آن كوپل شده است. معرفی می كنیم. ... In this paper, we introduce a extended theory of gravitation f(R), where we have a scalar field non-minimally coupled to it. The main point is to find the symmetries in the Lagrangian of the field and so find constants of motion which solve the field equations. For this purpose, we use the Noether symmetry approach, which is a very practical mathematical tool, and have physically rich content