Instantons in the Double-Tensor Multiplet
Ulrich Theis, Stefan Vandoren
TL;DR
This paper studies instanton solutions in the double-tensor multiplet from type IIB superstring theory, deriving bounds and new solutions that depend on topological charges and scalar field values.
Contribution
It derives a Bogomolny'i bound for the double-tensor multiplet and finds new instanton solutions saturating this bound.
Findings
Derived a Bogomolny'i bound for the double-tensor multiplet
Found new instanton solutions characterized by topological charges
Linked instanton solutions to asymptotic scalar field values
Abstract
The double-tensor multiplet naturally appears in type IIB superstring compactifications on Calabi-Yau threefolds, and is dual to the universal hypermultiplet. We revisit the calculation of instanton corrections to the low-energy effective action, in the supergravity approximation. We derive a Bogomolny'i bound for the double-tensor multiplet and find new instanton solutions saturating the bound. They are characterized by the topological charges and the asymptotic values of the scalar fields in the double-tensor multiplet.
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