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Browsing by Author "Strickland-Constable, Charles"
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Finite deformations from a heterotic superpotential: holomorphic Chern-Simons and an L∞ algebra
Ashmore, Anthony; de la Ossa, Xenia; Minasian, Ruben; Strickland-Constable, Charles; Svanes, Eirik Eik (2018-10-29)We consider finite deformations of the Hull-Strominger system. Starting from the heterotic superpotential, we identify complex coordinates on the off-shell parameter space. Expanding the superpotential around a supersymmetric ... -
Generalising G2 geometry: involutivity, moment maps and moduli
Ashmore, Anthony; Strickland-Constable, Charles; Tennyson, David; Waldram, Daniel (2021-01-26)We analyse the geometry of generic Minkowski N = 1, D = 4 flux compactifications in string theory, the default backgrounds for string model building. In M-theory they are the natural string theoretic extensions of G2 ... -
Heterotic backgrounds via generalised geometry: moment maps and moduli
Ashmore, Anthony; Strickland-Constable, Charles; Tennyson, David; Waldram, Daniel (2020-11-16)We describe the geometry of generic heterotic backgrounds preserving minimal supersymmetry in four dimensions using the language of generalised geometry. They are characterised by an $SU(3)\times Spin(6+n)$ structure within ... -
A heterotic Kodaira-Spencer theory at one-loop
Ashmore, Anthony; Ibarra, Javier José Murgas; McNutt, David Duncan; Strickland-Constable, Charles; Svanes, Eirik Eik; Tennyson, David; Winje, Sander (2023-10-23)We consider a heterotic version of six-dimensional Kodaira-Spencer gravity derived from the heterotic superpotential. We compute the one-loop partition function and find it can be expressed as a product of holomorphic ... -
On symmetries and dynamics of exotic supermultiplets
Minasian, Ruben; Strickland-Constable, Charles; Zhang, Yi (2021-01-27)Among the allowed representations of extended supersymmetry in six dimensions there are exotic chiral multiplets that, instead of a graviton, contain mixed-symmetry spin-2 tensor fields. Notably, an N = (4, 0) multiplet ... -
Supergravity Fluxes and Generalised Geometry : LMS/EPSRC Durham Symposium on Higher Structures in M theory
Strickland-Constable, Charles (2019-08-01)We briefly review the description of the internal sector of supergravity theories in the language of generalised geometry and how this gives rise to a description of supersymmetric backgrounds as integrable geometric ... -
Topological G 2 and Spin(7) strings at 1-loop from double complexes
Ashmore, Anthony; Coimbra, André; Strickland-Constable, Charles; Svanes, Eirik Eik; Tennyson, David (2022-02-11)We study the topological G2 and Spin(7) strings at 1-loop. We define new double complexes for supersymmetric NSNS backgrounds of string theory using generalised geometry. The 1-loop partition function then has a target-space ... -
Topological G2 and Spin(7) strings at 1-loop from double complexes
Ashmore, Anthony; Coimbra, André; Strickland-Constable, Charles; Svanes, Eirik Eik; Tennyson, David (2022-02-11)We study the topological G 2 and Spin(7) strings at 1-loop. We define new double complexes for supersymmetric NSNS backgrounds of string theory using generalised geometry. The 1-loop partition function then has a target-space ...