On the Exotic Phases of M-theory

Details On the Exotic Phases of M-theory On the Exotic Phases of M-theory

1998-10-22

arxiv.org/abs/hep-th/9810180v1

Phys.Lett. B450 (1999) 109-118

Physics

High Energy Physics

High Energy Physics - Theory

13 pages, LaTeX file, no figures

Scientific paper

10.1016/S0370-2693(99)00116-1

We study aspects of the new phases of M-theory recently conjectured using generalised dualities such as timelike T-duality. Our focus is on brane solutions. We derive the intersection rules in a general framework and then specialise to the new phases of M-theory. We discuss under which conditions a configuration with several branes leads to a regular extremal black hole under compactification. We point out that the entropy seems not to be constant when the radius of the physical timelike direction is varied. This could be interpreted as a non-conservation of the entropy (and the mass) under at least some of the new dualities.

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