# How can two time theories be compactified to 3+1 without any Kaluza-Klein remnants

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I have recently been looking into the two-time theories and the implied concepts.

For me this seems slightly hard to grasp.

How can I see the basic concept in this theory in a fundamental way based on its implied interaction with normal 3+1 dimension?

I am interested specifically in how gauge symmetries that effectively reduce 2T-physics in 4+2 dimensions to 1T-physics in 3+1 dimensions without any Kaluza-Klein remnants.

This post imported from StackExchange Physics at 2014-03-17 04:24 (UCT), posted by SE-user Argus
retagged Apr 19, 2014
Possible duplicates: physics.stackexchange.com/q/43322/2451 and links therein.

This post imported from StackExchange Physics at 2014-03-17 04:24 (UCT), posted by SE-user Qmechanic
@Qmechanic I think this question is a bit different and more specific than the other one, at least the last paragraph. And it seems to be asking about technical details.

This post imported from StackExchange Physics at 2014-03-17 04:24 (UCT), posted by SE-user Dilaton
This article here possibly says something about it, in particular the papers explained therein. But I have just detected and not yet read it.

This post imported from StackExchange Physics at 2014-03-17 04:24 (UCT), posted by SE-user Dilaton
Here is another reference.

This post imported from StackExchange Physics at 2014-03-17 04:24 (UCT), posted by SE-user Dilaton
"slightly hard to grasp." My friend, if you have understood one time dimension, you are already a king among physicists.

This post imported from StackExchange Physics at 2014-03-17 04:24 (UCT), posted by SE-user kηives
@jerry next time, use the comments area for stuff which doesn't answer the question.. :)

This post imported from StackExchange Physics at 2014-03-17 04:24 (UCT), posted by SE-user Manishearth
Dear @Nemo: not that it matters now, but for the record: the question(v2) was a duplicate. OP later included his main question(v3). See the edit history.

This post imported from StackExchange Physics at 2014-03-17 04:24 (UCT), posted by SE-user Qmechanic

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In this blog post, a paper that derives by dimensional reduction well known super Yang-Mills (SYM) theories, such as N=1 SYM in 9+1 dimensions and N=4 SYM in 3+1 dimensions among other things using a SYM theory in 10+2 dimensions as a common more fundamental underlying theory.

As can be seen from looking at figure 1 of that paper

As stated below equation (3.1), if applying the method of deriving shadows of two time physics to obtain lower dimensional theories, Kaluza-Klein are avoided.

answered Jun 29, 2013 by (6,040 points)

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