- #1
ohwilleke
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- TL;DR Summary
- People study vacuum solutions in general relativity, but I don't really understand why.
I understand that there are vacuum solutions of the equations of general relativity (GR) (i.e. equations with no mass-energy content contributing to the stress-energy tensor), that are studied by physicists interested in GR.
I don't understand why these are studied or what purpose they serve. Why aren't these solutions simply ignored as non-physical?
Could someone explain this at a very basic level?
I don't understand why these are studied or what purpose they serve. Why aren't these solutions simply ignored as non-physical?
Could someone explain this at a very basic level?