- #1
TrickyDicky
- 3,507
- 27
I'm trying to find examples of stress-energy tensors from exact solutions of the EFE corresponding physically to matter-that leaves out all vacuum solutions(including electrovacuum and lambdavacuum) and pure radiation(null dust)-, I'm finding hard to find any other than the usual SET from perfect fluids, are there no stress-energy tensors describing matter that are not perfect fluids?