Supersymmetry breaking with vanishing cosmological constant in string theory

C. P. Burgess, Fernando Quevedo

Research output: Contribution to journalArticlepeer-review


We show that for the effective four-dimensional N=1 supergravity governing string theory around a large class of vacua the scalar potential is the sum of non-negative terms even in the presence of supersymmetry breaking. It is therefore naturally minimized with vanishing cosmological constant. Our result relies only on generic features of these vacua that have been proven for string tree level and at all orders in -model perturbation theory, but appear to apply more generally, for example, holding exactly in the -model couplings for (0,2) ZN orbifold models of rank 16.

Original languageEnglish (US)
Pages (from-to)2611-2614
Number of pages4
JournalPhysical Review Letters
Issue number22
StatePublished - 1990

ASJC Scopus subject areas

  • General Physics and Astronomy


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