标题： 相对论引力的实验测试 显示英文标题

标题： Experimental Tests of Relativistic Gravity

摘要： 爱因斯坦引力理论与实验结果，特别是双脉冲星数据之间的对立情况被总结，并讨论了其意义。 实验和理论在10^{-3}级别或更高的一致性。 爱因斯坦理论的所有基本结构（引力与物质的耦合；引力场的传播和自相互作用，包括在强场条件下）都已被验证。 然而，理论上可能存在标量耦合通过宇宙膨胀自然趋向于零的可能性，这表明爱因斯坦理论与实验的当前一致性可能与引力的长程标量贡献（如弦理论中的稀释子场或模场）的存在相容。 这提供了一个新的理论范式，并为改进引力实验测试提供了新的动力。 显示英文摘要

摘要： The confrontation between Einstein's gravitation theory and experimental results, notably binary pulsar data, is summarized and its significance discussed. Experiment and theory agree at the 10^{-3} level or better. All the basic structures of Einstein's theory (coupling of gravity to matter; propagation and self-interaction of the gravitational field, including in strong-field conditions) have been verified. However, the theoretical possibility that scalar couplings be naturally driven toward zero by the cosmological expansion suggests that the present agreement between Einstein's theory and experiment might be compatible with the existence of a long-range scalar contribution to gravity (such as the dilaton field, or a moduli field, of string theory). This provides a new theoretical paradigm, and new motivations for improving the experimental tests of gravity.