D-instanton sums for matter hypermultiplets

Abstract

We calculate some nonperturbative (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 nontrivial 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-Kähler limit (i.e. in the absence of gravitational corrections).

Original language	English
Pages (from-to)	2645-2653
Number of pages	9
Journal	Modern Physics Letters A
Volume	19
Issue number	35
DOIs	https://doi.org/10.1142/S0217732304015865
Publication status	Published - 20 Nov 2004

Keywords

Duality
Instantons
Strings
Supersymmetry

ASJC Scopus subject areas

Nuclear and High Energy Physics
Astronomy and Astrophysics

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10.1142/S0217732304015865

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title = "D-instanton sums for matter hypermultiplets",

abstract = "We calculate some nonperturbative (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 nontrivial 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{\"a}hler limit (i.e. in the absence of gravitational corrections).",

keywords = "Duality, Instantons, Strings, Supersymmetry",

author = "Ketov, {Sergei V.} and Santillan, {Osvaldo P.} and Zorin, {Andrei G.}",

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T1 - D-instanton sums for matter hypermultiplets

AU - Ketov, Sergei V.

AU - Santillan, Osvaldo P.

AU - Zorin, Andrei G.

PY - 2004/11/20

Y1 - 2004/11/20

N2 - We calculate some nonperturbative (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 nontrivial 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-Kähler limit (i.e. in the absence of gravitational corrections).

AB - We calculate some nonperturbative (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 nontrivial 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-Kähler limit (i.e. in the absence of gravitational corrections).

KW - Duality

KW - Instantons

KW - Strings

KW - Supersymmetry

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JO - Modern Physics Letters A

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