paper

Loop Corrections to the Universal Hypermultiplet

arXiv:hep-th/9706195 · doi:10.1016/S0370-2693(98)00015-X

Abstract

The universal hypermultiplet arises as a subsector of every Calabi-Yau compactification of M-theory or Type II string theory. Classically its moduli space is the quaternionic space . We show that this moduli space receives a one-loop correction proportional to the Euler character of the Calabi-Yau, which can locally be absorbed by a certain constant shift of the fields. The correction vanishes in the limit that the Planck mass is taken to infinity, and hence is essentially gravitational in nature.

14 pages, harvmac. Added discussion of field redefinitions and the exact metric

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