Negative Energy Density in Calabi-Yau Compactifications

Details Negative Energy Density in Calabi-Yau Compactifications Negative Energy Density in Calabi-Yau Compactifications

2003-04-23

arxiv.org/abs/hep-th/0304199v2

JHEP 0305:060,2003

Physics

High Energy Physics

High Energy Physics - Theory

25 pages, v2: few clarifying comments and reference added

Scientific paper

10.1088/1126-6708/2003/05/060

We show that a large class of supersymmetric compactifications, including all simply connected Calabi-Yau and G_2 manifolds, have classical configurations with negative energy density as seen from four dimensions. In fact, the energy density can be arbitrarily negative -- it is unbounded from below. Nevertheless, positive energy theorems show that the total ADM energy remains positive. Physical consequences of the negative energy density include new thermal instabilities, and possible violations of cosmic censorship.

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