A viable relativistic scalar theory of gravitation

被引:0
作者
Braganca, Diogo P. L. [1 ]
机构
[1] Stanford Univ, KIPAC, Dept Phys, Stanford, CA 94305 USA
关键词
alternative theories of gravitation; general relativity; classical field theory; PPN formalism; scalar theory of gravitation; gravitational radiation; THEORETICAL FRAMEWORKS; EINSTEIN;
D O I
10.1088/1361-6382/acd0ff
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We build a self-consistent relativistic scalar theory of gravitation on a flat Minkowski spacetime from a general field Lagrangian. It is shown that, for parameters that satisfy the equivalence principle, this theory predicts the same outcome as general relativity (GR) for every classical solar-system test. This theory also admits gravitational waves that propagate at the speed of light, and the gravitational radiation energy loss in a binary system is shown to be very similar to the GR prediction. We then analyze the strong gravity regime of the theory for a spherically symmetric configuration and find that there is an effective 'singularity' near the Schwarzschild radius. The main goal of this work is to show that, contrary to what is commonly believed, there are relativistic scalar theories of gravitation defined on a Minkowski spacetime that are not ruled out by the classical solar system tests of GR.
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页数:24
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