- #1
ChrisVer
Gold Member
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I am pretty sure this question must have been asked before... However I was always wondering, what would a theory be like if we allowed to have two time-dimensions (so I think a SO(2,3) symmetry). In general this would allow time-rotations / rotations of the arrow of time, so I guess the light cones could also connect casually disconnected events.
What problems would that cause?
I am also asking because even at the extra dim cases (although this is a little off the SR/GR topic) we choose the extra dimensions -the ones we compactify- to be spatial ones, and not time...
What problems would that cause?
I am also asking because even at the extra dim cases (although this is a little off the SR/GR topic) we choose the extra dimensions -the ones we compactify- to be spatial ones, and not time...