Four-dimensional supergravity theories arising from superstrings
The low-energy D = 4, N = 1 supergravity theory that arises from the E 8 x E 8 heterotic superstring is constructed. The couplings of all massless modes that carry low-energy quantum numbers are calculated by performing a truncation of the ten-dimensional effective field theory in which all heavy Kaluza-Klein modes are discarded. The resulting action is compared to the most general action compatible with the symmetries of the underlying ten-dimensional field and string theory. This comparison indicates which features of the truncation are generic and which can be attributed to the truncation itself. The D = 4, N = 1 supergravity theory consistent with the symmetries is then analyzed. In particular, the general properties of the tree-level scalar potential are derived. One-loop radiative corrections to the scalar potential are considered in relation with the problem of supersymmetry breaking in the observable sector of the theory
Book, 1987
Univ. of Texas,Austin, TX, 1987