Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
1995-11-30
Nucl.Phys. B476 (1996) 175-199
Physics
High Energy Physics
High Energy Physics - Theory
26 pages, LaTeX2e and AMS-LaTeX 1.2, 1 eps figure
Scientific paper
10.1016/0550-3213(96)00281-7
We construct two classes of higher-derivative supergravity theories generalizing Einstein supergravity. We explore their dynamical content as well as their vacuum structure. The first class is found to be equivalent to Einstein supergravity coupled to a single chiral superfield. It has a unique stable vacuum solution except in a special case, when it becomes identical to a simple no-scale theory. The second class is found to be equivalent to Einstein supergravity coupled to two chiral superfields and has a richer vacuum structure. It is demonstrated that theories of the second class can possess a stable vacuum with vanishing cosmological constant that spontaneously breaks supersymmetry. We present an explicit example of this phenomenon and compare the result with the Polonyi model.
Hindawi Ahmed
Ovrut Burt A.
Waldram Daniel
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