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- Thread starter Marceli
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jedishrfu

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http://en.m.wikipedia.org/wiki/Kaluza–Klein_theory

One thing to be aware of is that this is a very deep theory and there may not be anyone here who can properly or adequately comment on it let alone answer your questions.

What is your interest in KK theory and what level of schooling do you have so far?

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Before I read this I was just thinking about this a couple days ago... hmm.

Simply brilliant!

Simply brilliant!

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I'm starting with the assumption that the 5th dimension is infinite universes like MWI.

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bhobba

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I'm starting with the assumption that the 5th dimension is infinite universes like MWI.

Actually in KK its curled up in a circle and this enforces the so called cylinder assumption which is the real basis of why KK works:

http://en.wikipedia.org/wiki/Kaluza–Klein_theory

The cylinder assumption is the geometry of a circle ie U(1) symmetry which is in fact the basis EM - so in a sense its EM in EM out. Once this was understood it lost much of its appeal and is pretty backwater these days.

Regarding locality it's quantisation would be a QFT and locality in that depends on the so called Cluster Decomposition property:

http://en.wikipedia.org/wiki/Cluster_decomposition_theorem

Thanks

Bill

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jedishrfu

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Thanks Bhoppa, it seems now we can close the thread.

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