How much energy do closed timelike curves in 2+1 spacetimes need?
classification
🌀 gr-qc
keywords
energytimelikecannotclosedcurvespresenceargumentcondition
read the original abstract
By noticing that, in open 2+1 gravity, polarized surfaces cannot converge in the presence of timelike total energy momentum (except for a rotation of 2 pi), we give a simple argument which shows that, quite generally, closed timelike curves cannot exist in the presence of such energy condition.
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