A custodial symmetry for the cosmological constant in the effective theories of four-dimensional superstrings

Details A custodial symmetry for the cosmological constant in the effective theories of four-dimensional superstrings A custodial symmetry for the cosmological constant in the effective theories of four-dimensional superstrings

Jun 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988nuphb.302..403k&link_type=abstract

Nuclear Physics B, Volume 302, Issue 3, p. 403-422.

Physics

Nuclear Physics

4

Scientific paper

We discuss supersymmetry breaking in the effective supergravity theories of four-dimensional N = 1 superstrings. Improving a recent suggestion, we introduce a superpotential modification that describes spontaneous supersymmetry breaking with vanishing cosmological constant and Str M2 = 0 at any minimum of the tree level potential. We prove that in a class of models there are classical minima at which also Str f(M2 = 0 for any function f. In particular, the whole one-loop cosmological constant vanishes. We propose a new boson-fermion symmetry of the spectrum, relating the graviton and the ``dilatino'', which explains these remarkable properties.

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