3 research outputs found
Anti-de Sitter Supersymmetry
We give a pedagogical introduction to certain aspects of supersymmetric field
theories in anti-de Sitter space. Among them are the presence of masslike terms
in massless wave equations, irreducible unitary representations and the
phenomenon of multiplet shortening.Comment: Lectures presented by B. de Wit at the Winter School of Theoretical
Physics, Polanica, Poland, February 1999. 23 pp., LateX file, requires
packages latexsym, amsfonts, cl2emult.cl
Effective gravity and OSp(N,4) invariant matter
We re-examine the OSp(N,4) invariant interacting model of massless chiral and
gauge superfields, whose superconformal invariance was instrumental, both in
proving the all-order no-renormalization of the mass and chiral
self-interaction lagrangians, and in determining the linear superfield
renormalization needed. We show that the renormalization of the gravitational
action modifies only the cosmological term, without affecting higher-order
tensors. This could explain why the effect of the cosmological constant is
shadowed by the effects of newtonian gravity.Comment: 12 pages, LaTeX, 4 figures, PACS: 04.65.+e, substantial revisions, to
appear in Phys. Rev.