期刊
GENERAL RELATIVITY AND GRAVITATION
卷 44, 期 8, 页码 1881-1891出版社
SPRINGER/PLENUM PUBLISHERS
DOI: 10.1007/s10714-012-1367-y
关键词
Alternative theories of gravity; Exact solutions; Noether symmetries
Spherical symmetry for f (R)-gravity is discussed by searching for Noether symmetries. The method consists in selecting conserved quantities in form of currents that reduce dynamics of f (R)-models compatible with symmetries. In this way we get a general method to obtain constants of motion without setting a priori the form of f (R). In this sense, the Noether symmetry results a physical criterium. Relevant cases are discussed.
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