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Skew Killing spinors in four dimensions
- Source :
- Annals of Global Analysis and Geometry, Annals of Global Analysis and Geometry, Springer Verlag, In press, ⟨10.1007/s10455-021-09754-9⟩, HAL
- Publication Year :
- 2020
- Publisher :
- HAL CCSD, 2020.
-
Abstract
- This paper is devoted to the classification of 4-dimensional Riemannian spin manifolds carrying skew Killing spinors. A skew Killing spinor $$\psi $$ ψ is a spinor that satisfies the equation $$\nabla _X\psi =AX\cdot \psi $$ ∇ X ψ = A X · ψ with a skew-symmetric endomorphism A. We consider the degenerate case, where the rank of A is at most two everywhere and the non-degenerate case, where the rank of A is four everywhere. We prove that in the degenerate case the manifold is locally isometric to the Riemannian product $${\mathbb {R}}\times N$$ R × N with N having a skew Killing spinor and we explain under which conditions on the spinor the special case of a local isometry to $${\mathbb {S}}^2\times {\mathbb {R}}^2$$ S 2 × R 2 occurs. In the non-degenerate case, the existence of skew Killing spinors is related to doubly warped products whose defining data we will describe.
- Subjects :
- Mathematics - Differential Geometry
Pure mathematics
Endomorphism
Generalized Killing spinors
doubly warped product
Rank (differential topology)
01 natural sciences
General Relativity and Quantum Cosmology
0103 physical sciences
FOS: Mathematics
Nabla symbol
0101 mathematics
Mathematics
Condensed Matter::Quantum Gases
Spinor
010308 nuclear & particles physics
010102 general mathematics
16. Peace & justice
Manifold
Hodge operator
Mathematics Subject Classification (2010): 53C25, 53C27
Differential Geometry (math.DG)
Differential geometry
[MATH.MATH-DG]Mathematics [math]/Differential Geometry [math.DG]
Killing spinor
Product (mathematics)
Geometry and Topology
Mathematics::Differential Geometry
Analysis
Subjects
Details
- Language :
- English
- ISSN :
- 0232704X and 15729060
- Database :
- OpenAIRE
- Journal :
- Annals of Global Analysis and Geometry, Annals of Global Analysis and Geometry, Springer Verlag, In press, ⟨10.1007/s10455-021-09754-9⟩, HAL
- Accession number :
- edsair.doi.dedup.....d773b5493847f5572b7324ec048eeed8