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Jul 12, 2020 at 22:12 comment added Yukterez That's not true, positive and negative masses would not fly apart, they would form a so called runaway pair, see en.wikipedia.org/wiki/Negative_mass#Runaway_motion and youtube.com/watch?v=qnUs4_26D9o&t=5m2s
Jul 11, 2020 at 23:15 comment added Aleph12345 Ok but we have to assume the dominant energy condition, that we know it is violated from the vacuum itself. Or we can use the positive energy theorem anyway?
Jul 11, 2020 at 21:58 history answered user269687 CC BY-SA 4.0