One-loop Regularization of Supergravity II: The Dilaton and the Superfield Formulation

Abstract

The on-shell regularization of the one-loop divergences of supergravity theories is generalized to include a dilaton of the type occurring in effective field theories derived from superstring theory, and the superfield structure of the one-loop corrections is given. Field theory anomalies and quantum contributions to soft supersymmetry breaking are discussed. The latter are sensitive to the precise choice of couplings that generate Pauli-Villars masses, which in turn reflect the details of the underlying theory above the scale of the effective cut-off. With a view to the implementation the Green-Schwarz and other mechanisms for canceling field theory anomalies under a U(1) gauge transformation and under the T-duality group of modular transformations, we show that the Kähler potential renormalization for the untwisted sector of orbifold compactification can be made invariant under these groups.

46 pages, full postscript also available from http://phyweb.lbl.gov/theorygroup/papers/43259.ps

References in corpus (2)

• Gaugino Masses in Modular Invariant Supergravity
• On the muon anomalous magnetic moment in models with a superlight gravitino

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