Selected Themes in Relativistic Gravity

摘要

Although the development of the so-called 'post-Newtonian' approximation to general relativity started as early as 1916 (through the works of Droste, De Sitter and Lorentz and Droste) and found its way in most advanced textbooks, it is only recently that one found a much simplified way of formulating it. Indeed, a great simplication is obtained: (1) by a suitable 'exponential' parametrization of the metric, and (2) by introducing convenient matter variables.