A New Venue of Spontaneous Supersymmetry Breaking in Supergravity
arXiv:1501.05518
Abstract
We present a qualitatively new mechanism for dynamical spontaneous breakdown of supersymmetry in supergravity. Specifically, we construct a modified formulation of standard minimal N=1 supergravity as well as of anti-de Sitter supergravity in terms of a non-Riemannian spacetime volume-form (generally covariant integration measure density). The new supergravity formalism naturally triggers the appearance of a dynamically generated cosmological constant as an arbitrary integration constant which signifies spontaneous (dynamical) breaking of supersymmetry. Applying the new formalism to anti-de Sitter supergravity allows us to appropriately choose the above mentioned arbitrary integration constant so as to obtain simultaneously a very small effective observable cosmological constant as well as a large physical gravitino mass as required by modern cosmological scenarios for slowly expanding universe of the present epoch.
11 pages, to appear in the proceedings of "8th Meeting in Modern Mathematical Physics", B. Dragovic and Z. Rakic (eds.), Belgrade Inst. Phys. Press (2015)
References in corpus (2)
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