Browsing University of Hertfordshire by Author "Strickland-Constable, Charles"

Now showing items 1-8 of 8

    • 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 gravityderived from the heterotic superpotential. We compute the one-loop partition function andfnd it can be expressed as a product of holomorphic Ray-Singer ...

    • 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 ...