Gravity and Discrete Symmetry
نویسندگان
چکیده
Using the differential calculus on discrete group, we study the general relativity in the space-time which is the product of a four dimensional manifold by a two-point space. We generalize the usual concept of frame and connection in our space-time, and from the generalized torsion free condition we obtain an action of a scalar field coupled to Einstein gravity, which may be related to the Jordan-Brans-Dicke theory. The project is supported in part by National Natural Science Foundation of China, and ”Climbing Up” Foundation of China.
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