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0 votes
1 answer
116 views

Energy spectrum in Klein-Gordon equation in general relativity

I know that the Klein-Gordon equation in general relativity takes the form (a massless field) $\nabla_\mu \nabla^\mu \phi=\sum_{a,b} \frac{1}{\sqrt{-g}}\partial_a(\sqrt{-g}g^{ab}\partial_b\phi) =0$ ...
TTT's user avatar
  • 63
1 vote
1 answer
435 views

If a black hole is just warped spacetime, then where is the electric charge?

I've heard Kip Thorne repeatedly state that matter is destroyed when a black hole is created, that all you are left with is distorted spacetime. "The idea that black holes are made from very ...
Todd Lewis's user avatar
2 votes
3 answers
537 views

Evidence that "space exists rather than just particles"

What is (theoretical) evidence that you need to define all of space with properties rather than just stating where all particles are? I mean, does every single coordinate x, y, z have a meaning or ...
Gere's user avatar
  • 1,477