Hidden symmetries , central charges and all that
نویسنده
چکیده
In this review we discuss hidden symmetries of toroidal compactifications of 11-dimensional supergravity. We recall alternative versions of this theory which exhibit traces of the hidden symmetries while still retaining the massive Kaluza– Klein states. We reconsider them in the broader perspective of M-theory which incorporates a more extended variety of BPS states. We also argue for a new geometry that may underly these theories. All our arguments point towards an extension of the number of spacetime coordinates beyond 11. PACS numbers: 0465, 0450, 1130P
منابع مشابه
v 1 1 0 O ct 1 99 6 hep - th / 9610074 CERN - TH / 96 - 277 USC - 96 / HEP - B 6 BLACK HOLE ENTROPY REVEALS A 12 th DIMENSION 1
The Beckenstein-Hawking black hole entropy in string theory and its generalizations , as expressed in terms of charges that correspond to central extensions of the supersymmetry algebra, has more symmetries than U-duality. It is invariant under transformations of the charges, involving a 12th (or 13th) " dimension ". This is an indication that the secret theory behind string theory has a supera...
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