Negative energy density in Calabi-Yau compactifications

Thomas Hertog, Gary T. Horowitz, Kengo Maeda

Research output: Contribution to journalArticlepeer-review

23 Citations (Scopus)


We show that a large class of supersymmetric compactifications, including all simply connected Calabi-Yau and G2 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.

Original languageEnglish
Pages (from-to)1415-1434
Number of pages20
JournalJournal of High Energy Physics
Issue number5
Publication statusPublished - 2003 May 1
Externally publishedYes


  • Black Holes in String Theory
  • Classical Theories of Gravity
  • Superstring Vacua

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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