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All Outputs (26)

More on G-flux and general hodge cycles on the Fermat sextic (2024)
Journal Article
Braun, A. P., Fortin, H., Garcia, D. L., & Loyola, R. V. (in press). More on G-flux and general hodge cycles on the Fermat sextic. Journal of High Energy Physics, 2024(6), Article 46. https://doi.org/10.1007/jhep06%282024%29046

We study M-Theory solutions with G-flux on the Fermat sextic Calabi-Yau fourfold, focussing on the relationship between the number of stabilized complex structure moduli and the tadpole contribution of the flux. We use two alternative approaches to d... Read More about More on G-flux and general hodge cycles on the Fermat sextic.

Tadpoles and gauge symmetries (2023)
Journal Article
Braun, A. P., Fraiman, B., Graña, M., Lüst, S., & Parra De Freitas, H. (2023). Tadpoles and gauge symmetries. Journal of High Energy Physics, 2023(8), Article 134. https://doi.org/10.1007/jhep08%282023%29134

The tadpole conjecture proposes that complex structure moduli stabilisation by fluxes that have low tadpole charge can be realised only at special points in moduli space, leading generically to (large) gauge symmetries. Here we provide an exhaustive... Read More about Tadpoles and gauge symmetries.

Gauged 2-form symmetries in 6D SCFTs coupled to gravity (2021)
Journal Article
Braun, A. P., Larfors, M., & Oehlmann, P. (2021). Gauged 2-form symmetries in 6D SCFTs coupled to gravity. Journal of High Energy Physics, 2021(12), Article 132. https://doi.org/10.1007/jhep12%282021%29132

We study six dimensional supergravity theories with superconformal sectors (SCFTs). Instances of such theories can be engineered using type IIB strings, or more generally F-Theory, which translates field theoretic constraints to geometry. Specificall... Read More about Gauged 2-form symmetries in 6D SCFTs coupled to gravity.

Fibre-base duality of 5d KK theories (2021)
Journal Article
Braun, A. P., Chen, J., Haghighat, B., Sperling, M., & Yang, S. (2021). Fibre-base duality of 5d KK theories. Journal of High Energy Physics, 2021(5), Article 200. https://doi.org/10.1007/jhep05%282021%29200

We study circle compactifications of 6d superconformal field theories giving rise to 5d rank 1 and rank 2 Kaluza-Klein theories. We realise the resulting theories as M-theory compactifications on local Calabi-Yau 3-folds and match the prepotentials f... Read More about Fibre-base duality of 5d KK theories.

G 4 flux, algebraic cycles and complex structure moduli stabilization (2021)
Journal Article
Braun, A., & Valandro, R. (2021). G 4 flux, algebraic cycles and complex structure moduli stabilization. Journal of High Energy Physics, 2021(1), Article 207. https://doi.org/10.1007/jhep01%282021%29207

We construct G4 fluxes that stabilize all of the 426 complex structure moduli of the sextic Calabi-Yau fourfold at the Fermat point. Studying flux stabilization usually requires solving Picard-Fuchs equations, which becomes unfeasible for models with... Read More about G 4 flux, algebraic cycles and complex structure moduli stabilization.

On Mirror Maps for Manifolds of Exceptional Holonomy (2019)
Journal Article
Braun, A. P., Majumder, S., & Otto, A. (2019). On Mirror Maps for Manifolds of Exceptional Holonomy. Journal of High Energy Physics, 2019(10), Article 204. https://doi.org/10.1007/jhep10%282019%29204

We study mirror symmetry of type II strings on manifolds with the exceptional holonomy groups G2 and Spin(7). Our central result is a construction of mirrors of Spin(7) manifolds realized as generalized connected sums. In parallel to twisted connecte... Read More about On Mirror Maps for Manifolds of Exceptional Holonomy.

Higgs bundles for M-theory on G2-manifolds (2019)
Journal Article
Braun, A. P., Cizel, S., Hübner, M., & Schäfer-Nameki, S. (2019). Higgs bundles for M-theory on G2-manifolds. Journal of High Energy Physics, 2019(3), Article 199. https://doi.org/10.1007/jhep03%282019%29199

M-theory compactified on G2-holonomy manifolds results in 4d N = 1 supersymmetric gauge theories coupled to gravity. In this paper we focus on the gauge sector of such compactifications by studying the Higgs bundle obtained from a partially twisted 7... Read More about Higgs bundles for M-theory on G2-manifolds.

Counting associatives in compact $G_2$ orbifolds (2019)
Journal Article
Acharya, B. S., Braun, A. P., Svanes, E. E., & Valandro, R. (2019). Counting associatives in compact $G_2$ orbifolds. Journal of High Energy Physics, 03, Article 138. https://doi.org/10.1007/jhep03%282019%29138

We describe a class of compact G2 orbifolds constructed from non-symplectic involutions of K3 surfaces. Within this class, we identify a model for which there are infinitely many associative submanifolds contributing to the effective superpotential o... Read More about Counting associatives in compact $G_2$ orbifolds.

Spin(7)-manifolds as generalized connected sums and 3d $\mathcalN=1$ theories (2018)
Journal Article
Braun, A. P., & Schäfer-Nameki, S. (2018). Spin(7)-manifolds as generalized connected sums and 3d $\mathcalN=1$ theories. Journal of High Energy Physics, 2018(06), Article 103. https://doi.org/10.1007/jhep06%282018%29103

M-theory on compact eight-manifolds with Spin(7)-holonomy is a framework for geometric engineering of 3d N=1 gauge theories coupled to gravity. We propose a new construction of such Spin(7)-manifolds, based on a generalized connected sum, where the b... Read More about Spin(7)-manifolds as generalized connected sums and 3d $\mathcalN=1$ theories.

Compact, Singular $G_2$-Holonomy Manifolds and M/Heterotic/F-Theory Duality (2018)
Journal Article
Braun, A. P., & Schäfer-Nameki, S. (2018). Compact, Singular $G_2$-Holonomy Manifolds and M/Heterotic/F-Theory Duality. Journal of High Energy Physics, 2018(04), Article 126. https://doi.org/10.1007/jhep04%282018%29126

We study the duality between M-theory on compact holonomy G2-manifolds and the heterotic string on Calabi-Yau three-folds. The duality is studied for K3-fibered G2-manifolds, called twisted connected sums, which lend themselves to an application of f... Read More about Compact, Singular $G_2$-Holonomy Manifolds and M/Heterotic/F-Theory Duality.

Mirror symmetry for G 2-manifolds: twisted connected sums and dual tops (2017)
Journal Article
Braun, A. P., & Del Zotto, M. (2017). Mirror symmetry for G 2-manifolds: twisted connected sums and dual tops. Journal of High Energy Physics, 2017(5), Article 80. https://doi.org/10.1007/jhep05%282017%29080

Recently, at least 50 million of novel examples of compact G 2 holonomy manifolds have been constructed as twisted connected sums of asymptotically cylindrical Calabi-Yau threefolds. The purpose of this paper is to study mirror symmetry for compactif... Read More about Mirror symmetry for G 2-manifolds: twisted connected sums and dual tops.

Heterotic-Type IIA Duality and Degenerations of K3 Surfaces (2016)
Journal Article
Braun, A. P., & Watari, T. (2016). Heterotic-Type IIA Duality and Degenerations of K3 Surfaces. Journal of High Energy Physics, 08, Article 034. https://doi.org/10.1007/jhep08%282016%29034

We study the duality between four-dimensional N = 2 compactifications of heterotic and type IIA string theories. Via adiabatic fibration of the duality in six dimensions, type IIA string theory compactified on a K3-fibred Calabi-Yau threefold has a p... Read More about Heterotic-Type IIA Duality and Degenerations of K3 Surfaces.