A
- Peter C. Aichelburg (Aichelburg/Sexl ultraboost, generalized symmetries),
- Miguel Alcubierre (numerical relativity, warp drives),
- J. A. Allnut (Alnutt fluid solution),
- Jan E. Åman (Cartan/Karlhede classification, CLASSI GR computer algebra package),
- Richard L. Arnowitt (ADM formalism, ADM mass/energy),
- Abhay Ashtekar (Ashtekar variables, dynamical horizons),
- Asghar Qadir (Relativity, Astrophysics) Pakistan
Read more about this topic: Contributors To General Relativity