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- Donostia International Physics CenterES49 papers
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6 papers · 1 filter
Solvable Lie algebras are not that hypo
Diego Conti, Marisa Fernandez, Jose A. Santisteban
We study a type of left-invariant structure on Lie groups, or equivalently on Lie algebras. We introduce obstructions to the existence of a hypo structure, namely the 5-dimensional…
Compact supersymmetric solutions of the heterotic equations of motion in dimension 5
Marisa Fernandez, Stefan Ivanov, Luis Ugarte +1
We construct explicit compact supersymmetric solutions with non-zero field strength, non-flat instanton and constant dilaton to the heterotic string equations in dimension five. We…
Balanced Hermitian metrics from SU(2)-structures
Marisa Fernández, Adriano Tomassini, Luis Ugarte +1
We study the intrinsic geometrical structure of hypersurfaces in 6-manifolds carrying a balanced Hermitian SU(3)-structure, which we call {\em balanced} SU(2)-{\em structures}. We…
Non-Kaehler Heterotic String Compactifications with non-zero fluxes and constant dilaton
Marisa Fernández, Stefan Ivanov, Luis Ugarte +1
We construct new explicit compact supersymmetric valid solutions with non-zero field strength, non-flat instanton and constant dilaton to the heterotic equations of motion in dimen…
Contact 5-manifolds with SU(2)-structure
Luis C. de Andrés, Marisa Fernández, Anna Fino +1
We consider 5-manifolds with a contact form arising from a hypo structure, which we call \emph{hypo-contact}. We provide conditions which imply that there exists such a structure o…
On non-formal simply connected manifolds
M. Fernández, V. Muñoz
We construct examples of non-formal simply connected and compact oriented manifolds of any dimension bigger or equal to 7.