Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
1999-01-29
Adv.Theor.Math.Phys. 3 (1999) 1613-1634
Physics
High Energy Physics
High Energy Physics - Theory
19p, harvmac; One sign in eq. (A.2) changed
Scientific paper
We investigate the prepotential that describes certain F^4 couplings in eight dimensional string compactifications, and show how they can be computed from the solutions of inhomogenous differential equations. These appear to have the form of the Picard-Fuchs equations of a fibration of Sym^2(K3) over P^1. Our findings give support to the conjecture that the relevant geometry which underlies these couplings is given by a five-fold.
Lerche Wolfgang
Stieberger Stephan
Warner Nicholas P.
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