Subsectors, Dynkin Diagrams and New Generalised Geometries
Oct 15, 201339 pages
Published in:
- JHEP 08 (2017) 144
- Published: Aug 31, 2017
e-Print:
- 1310.4196 [hep-th]
Report number:
- ZMP-HH-13-19
View in:
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Abstract: (Springer)
We examine how generalised geometries can be associated with a labelled Dynkin diagram built around a gravity line. We present a series of new generalised geometries based on the groups Spin(d, d) × ℝ for which the generalised tangent space transforms in a spinor representation of the group. In low dimensions these all appear in subsectors of maximal supergravity theories. The case d = 8 provides a geometry for eight-dimensional backgrounds of M theory with only seven-form flux, which have not been included in any previous geometric construction. This geometry is also one of a series of “half-exceptional” geometries, which “geometrise” a six-form gauge field. In the appendix, we consider exam-ples of other algebras appearing in gravitational theories and give a method to derive the Dynkin labels for the “section condition” in general. We argue that generalised geometry can describe restrictions and subsectors of many gravitational theories.Note:
- 42 pages, v2: minor improvements and changes, published version
- Differential and Algebraic Geometry
- Flux compactifications
- M-Theory
- Supergravity Models
- spinor: representation
- group: representation
- dimension: 8
- geometry
- gravitation
- gauge field theory
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- [2]
- [3]
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- [5]
- [6]
- [7]
- [7]
- [7]
- [7]
- [8]
- [8]
- [8]
- [8]
- [9]
- [9]
- [9]
- [9]
- [9]
- [9]
- [9]
- [9]
- [9]
- [9]