Do mathematical explanations of geometry really give a cause to increasing distances?

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Do mathematical explanations of geometry really give a cause to increasing distances?

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Take a read through the two articles I posted in this thread.

Perhaps with a better understanding of geometry and expansion you will see there us no need to invoke alternate dimension sources.

https://www.physicsforums.com/showthread.php?t=709478

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However in the voids between galaxy clusters. vacuum pressure becomes dominant. As the amount of space increases the vacuum pressure does not change. Hence constant. Ie cosmological constant. As the volume of the dominant vacuum pressure increases expansion rates also increase overall. However not per cubic metre

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My understanding:I'm just a rank amateur so believe me, i feel silly being argumentative here, but anyway - as i understand it the cosmological constant is just a mathematical description, not a mechanism. Is vacuum energy the same?

You're right in that the constant isn't "physically acting" on space, it is simply a part of the math. But without the constant the math simply wouldn't work at a universal scale. Since GR is a theory of geometry, this constant is an important part. Dark energy is an attempt to put a physical mechanism in place to explain the expansion. But it really isn't necessary, as the geometry of the universe can simply cause an expansion regardless of a physical mechanism. Space doesn't need something to cause it to behave that way if it's "built in" to the geometry.

Does that make sense?

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If it happens to be multidimensional geometry, then that's what it is. But as of now we only know of our own 3 spatial dimensions. I'm not sure what kind of answers you're seeking.Thanks Drakkith. What if it's a multidimensional geometry that is causing measurements to expand i.e. Calabai yau space moving in and out of our 3 dimensions?

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It will remain nothing. The math just gets more complicated.if the LHC validates the possibility of extra dimensions, what will that say about space being more than nothing?

I don't understand the concept of more space coming from some other dimension. That seems like asking if space from the Y dimension moves into the X dimension or Z dimension. (Where X, Y, and Z are our normal 3 dimensions)

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Not sure I still have the paper. I will look. Been a coupke of years since I last read the article

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