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Pondering Casimir effect and negative mass and Gravitational binding energy as alternative to dark matter? I start to think that each form of negative energy has negative gravitational mass. The list includes:

  1. Energy of 2 masses that interact through gravitation.
  2. Energy of 2 opposite charges.
  3. Energy of 2 Casimir plates.

But, what are the inertial properties of negative mass?

2 interacting negative masses will repeal each other (as proposed by H.Bondi in 1957) ?

Or will they attract each other as proposed in bi-gravity models? (See for example Solving the negative mass paradox by Jean-Pierre Petit Aix-Marseille Université)

Are there any experimental evidence in favor of repulsion or attraction?

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  • $\begingroup$ Minor comment to the post (v2): Please consider to mention explicitly author, title, etc. of link, so it is possible to reconstruct link in case of link rot. $\endgroup$
    – Qmechanic ♦
    Apr 12 at 17:07

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