Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2004-07-19
Mod.Phys.Lett. A19 (2004) 2645
Physics
High Energy Physics
High Energy Physics - Theory
11 pages, no figures
Scientific paper
10.1142/S0217732304015865
We calculate some non-perturbative (D-instanton) quantum corrections to the moduli space metric of several (n>1) identical matter hypermultiplets for the type-IIA superstrings compactified on a Calabi-Yau threefold, near conifold singularities. We find a non-trivial deformation of the (real) 4n-dimensional hypermultiplet moduli space metric due to the infinite number of D-instantons, under the assumption of n tri-holomorphic commuting isometries of the metric, in the hyper-K"ahler limit (i.e. in the absence of gravitational corrections).
Ketov Sergei V.
Santillan Osvaldo P.
Zorin Andrei G.
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