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Heterotic Resolved Conifolds with Torsion, from Supergravity to CFT · Around

2009

Heterotic Resolved Conifolds with Torsion, from Supergravity to CFT

Carlevaro, Luca, Israel, Dan

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We obtain a family of heterotic supergravity backgrounds describing non-Kahler warped conifolds with three-form flux and an Abelian gauge bundle, preserving N=1 supersymmetry in four dimensions.

At large distance from the singularity the usual Ricci-flat conifold is recovered.
By performing a Z_2 orbifold of the T^{1,1} base, the conifold singularity can be blown-up to a four-cycle, leading to a completely smooth geometry.
Remarkably, the throat regions of the solutions, which can be isolated from the asymptotic Ricci-flat geometry using a double-scaling limit, possess a worldsheet CFT description in terms of heterotic cosets whose target space is the warped resolved orbifoldized conifold.

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