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Alec Thomson
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Supersymmetric Completion of Gauss-Bonnet Combination in Five Dimensions
Donald R. Davis
et al.
Jan 28, 2013
Based on superconformal tensor calculus in five dimensions, we construct thesupersymmetric completion of Gauss-Bonnet combination. We study the vacuumsolutions with AdS_2 x S^3 and AdS_3 x S^2 structures. We also analyze thespectrum around a maximally supersymmetric Minkowski_5.
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Multiple Single-Centered Attractors
Irina Davydova
et al.
Jun 27, 2014
In this paper we study spherically symmetric single-centered attractors inN=2 supergravity in four dimensions. The attractor points are obtained byextremising the effective black hole potential in the moduli space. Using the4D-5D correspondence of critical points of the effective black hole potentialwe argue the existence of multiple attractors in four dimensions and explicitlyconstruct a pair of multiple solutions in a simple two parameter model. Wefurther obtain explicit examples of two distinct non-supersymmetric attractorsin type IIA string theory compactified on K3 X T2 carrying D0-D4-D6 charges. Wecompute the entropy of these attractors and analyse their stability in detail.
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1/2-BPS D-branes from covariant open superstring in AdS$_4\times \mathbf{CP}^3$ background
Irina Davydova
et al.
Feb 20, 2018
We consider the open superstring action in the AdS$_4 \times \mathbf{CP}^3$background and investigate the suitable boundary conditions for the opensuperstring describing the 1/2-BPS D-branes by imposing the $\kappa$-symmetryof the action. This results in the classification of 1/2-BPS D-branes fromcovariant open superstring. It is shown that the 1/2-BPS D-brane configurationsare restricted considerably by the K\"{a}hler structure on $\mathbf{CP}^3$. Wejust consider D-branes without worldvolume fluxes.
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