Bimetric gravity (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Bimetric gravity" in English language version.

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  • "Nathan Rosen — The Man and His Life-Work", Technion.ac.il, 2011, web: Technion-rosen.

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  • O'Dowd, Matt (7 February 2019). "Sound Waves from the Beginning of Time". PBS Space Time. PBS. 16 minutes in. Retrieved 8 February 2019. An alternate model that how negative mass might behave: in so-called 'bimetric gravity' you can have positive and negative masses, but each is described by its own set of Einstein field equations. That's kinda like having 'parallel spacetimes', one with positive and one with negative masses, which can still interact gravitationally. In these models, like masses attract and opposite masses repel… and you don't get the crazy 'runaway motion' that occurs if you put both positive and negative masses in the same spacetime. So no perpetual motion machines… It can also be used to explain dark energy and dark matter.