D-instantons in Type IIA string theory on Calabi-Yau threefolds

Abstract

Type IIA string theory compactified on a Calabi-Yau threefold has a hypermultiplet moduli space whose metric is known to receive non-perturbative corrections from Euclidean D2-branes wrapped on 3-cycles. These corrections have been computed earlier by making use of mirror symmetry, S-duality and twistorial description of quaternionic geometries. In this paper we compute the leading corrections in each homology class using a direct world-sheet approach without relying on any duality symmetry or supersymmetry. Our results are in perfect agreement with the earlier predictions.

42+17 pages

References in corpus (15)

• Nonperturbative corrections to 4D string theory effective actions from SL(2,Z) duality and supersymmetry
• D-instantons and twistors
• Small Cosmological Constants in String Theory
• The D^4 R^4 term in type IIB string theory on T^2 and U-duality
• $D^6{R}^4$ amplitudes in various dimensions
• Normalization of Type IIB D-instanton Amplitudes
• Large D-instanton effects in string theory
• Muti-instanton Amplitudes in Type IIB String Theory
• Dualities and fivebrane instantons
• Hypermultiplet metric and D-instantons
• The D^6 R^4 term in type IIB string theory on T^2 and U-duality
• Fivebrane instantons in Calabi-Yau compactifications
• Multi-Instanton Calculus in c = 1 String Theory
• Quaternionic Kähler metrics associated to special Kähler manifolds with mutually local variations of BPS structures
• A Cosmological Constant That is Too Small

Cited by in corpus (9)

• Small Cosmological Constants in String Theory
• Euclidean D-branes in Type IIB string theory on Calabi-Yau threefolds
• Mathematical structures of non-perturbative topological string theory: from GW to DT invariants
• D-instanton Induced Superpotential
• The ZZ annulus one-point function in non-critical string theory: A string field theory analysis
• Normalization of D instanton amplitudes in two dimensional type 0B string theory
• D(-1)-Instanton Superpotential In String Theory
• D-instanton, threshold corrections, and topological string
• The complex Liouville string: worldsheet boundaries and non-perturbative effects