期刊
EUROPEAN PHYSICAL JOURNAL C
卷 71, 期 3, 页码 -出版社
SPRINGER
DOI: 10.1140/epjc/s10052-011-1589-2
关键词
-
资金
- Turkish Academy of Sciences (TUBA)
- The Scientific and Technological Research Council of Turkey (TUBITAK)
We investigate the non-minimal couplings between the electromagnetic fields and gravity through the natural logarithm of the curvature scalar. After we give the Lagrangian formulation of the non-minimally coupled theory, we derive field equations by a first order variational principle using the method of Lagrange multipliers. We look at static, spherically symmetric solutions that are asymptotically flat. We discuss the nature of horizons for some candidate black hole solutions according to various values of the parameters R-0 and a(1).
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