标题： 爱因斯坦和拉斯特尔引力理论的比较 显示英文标题

标题： Einstein and Rastall Theories of Gravitation in Comparison

摘要： 我们借助维斯纳最近的一篇论文，该论文声称拉斯塔尔引力与爱因斯坦引力等价，从而以一种普遍的方式比较这两种引力理论。 我们的结论与维斯纳的结论不同。 我们确实认为这两种理论并不等价。 事实上，与爱因斯坦广义相对论相比，拉斯塔尔引力理论是一个“开放”理论。 因此，它准备好接受观测宇宙学和量子引力的挑战。 显示英文摘要

摘要： We profit by a recent paper of Visser claiming that Rastall gravity is equivalent to Einstein gravity to compare the two gravitational theories in a general way. Our conclusions are different from Visser's ones. We indeed argue that these two theories are not equivalent. In fact, Rastall theory of gravity is an "open" theory when compared to Einstein general theory of relativity. Thus, it is ready to accept the challenges of observational cosmology and quantum gravity.