Loop Corrections to the Universal Hypermultiplet

Details Loop Corrections to the Universal Hypermultiplet Loop Corrections to the Universal Hypermultiplet

1997-06-26

arxiv.org/abs/hep-th/9706195v2

Phys.Lett.B421:139-148,1998

Physics

High Energy Physics

High Energy Physics - Theory

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

Scientific paper

10.1016/S0370-2693(98)00015-X

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 $SU(2,1)/U(2)$. 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.

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