2,906 research outputs found
Supersymmetry and Gravitational Quadrupoles
We derive model independent, non-perturbative supersymmetric sum rules for
the gravitational quadrupole moments of arbitrary-spin particles in any N=1
supersymmetric theory. These sum rules select a ``preferred'' value of h=1
where the ``h-factor'' is the gravitational quadrupole analog of the
gyromagnetic ratio or g-factor. This value of h=1 corresponds identically to
the preferred field theory value obtained by tree-level unitarity
considerations. The presently derived h-factor sum rule complements and
generalizes previous work on electromagnetic moments where g=2 was shown to be
preferred by both supersymmetric sum rule and tree-level unitarity arguments.Comment: 10 pages, plain Te
Strings in Nontrivial Gravitino and Ramond-Ramond Backgrounds
In this paper we discuss deformations of the BRST operator of the fermionic
string. These deformations preserve nilpotency of the BRST operator and
correspond to turning on infinitesimal Gravitino and Ramond-Ramond spacetime
fields.Comment: 6 pages, Latex; Based on a talk given at the 10th International
Symposium on String Theory, Towha University, Fukuoka, Japan, July 200
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