TY - JOUR

T1 - Supersymmetry breaking with vanishing cosmological constant in string theory

AU - Burgess, C. P.

AU - Quevedo, Fernando

PY - 1990

Y1 - 1990

N2 - 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.

AB - 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.

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U2 - 10.1103/PhysRevLett.64.2611

DO - 10.1103/PhysRevLett.64.2611

M3 - Article

AN - SCOPUS:11944261497

SN - 0031-9007

VL - 64

SP - 2611

EP - 2614

JO - Physical Review Letters

JF - Physical Review Letters

IS - 22

ER -