期刊
CLASSICAL AND QUANTUM GRAVITY
卷 22, 期 9, 页码 1867-1880出版社
IOP PUBLISHING LTD
DOI: 10.1088/0264-9381/22/9/024
关键词
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We establish a new self-consistent system of equations for the gravitational and electromagnetic fields. The procedure is based on a non-minimal nonlinear extension of the standard Einstein-Hilbert-Maxwell action. General properties of a three-parameter family of non-minimal linear models are discussed. In addition, we show explicitly that a static spherically symmetric charged object can be described by a non-minimal model, second order in the derivatives of the metric, when the susceptibility tensor is proportional to the double-dual Riemann tensor.
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