Results 21 to 30 of about 836,642 (337)
Fluxes in M-theory on 7-manifolds and G structures [PDF]
, 2003 We consider warp compactifications of M-theory on 7-manifolds in the presence of 4-form fluxes and investigate the constraints imposed by supersymmetry. As long as the 7-manifold supports only one Killing spinor we infer from the Killing spinor equations
A. Bilal +27 more
core +5 more sources
Killing forms on symmetric spaces
Differential Geometry and its Applications, 2006 Killing forms on Riemannian manifolds are differential forms whose covariant derivative is totally skew--symmetric. We show that a compact simply connected symmetric space carries a non--parallel Killing $p$--form ($p\ge2$) if and only if it isometric to a Riemannian product $S^k\times N$, where $S^k$ is a round sphere and $k>p$.
Belgun, Florin +2 more
openaire +3 more sources
N = 4 near-horizon geometries in D = 11 supergravity
Journal of High Energy Physics, 2021 Extreme near-horizon geometries in D = 11 supergravity preserving four supersymmetries are classified. It is shown that the Killing spinors fall into three possible orbits, corresponding to pairs of spinors defined on the spatial cross-sections of the ...
D. Farotti, J. Gutowski
doaj +1 more source
Basic gravitational currents and Killing–Yano forms [PDF]
General Relativity and Gravitation, 2010 Comment: 11 ...
Acik, O. +3 more
openaire +4 more sources
The Geometry of D=11 Null Killing Spinors [PDF]
, 2003 We determine the necessary and sufficient conditions on the metric and the four-form for the most general bosonic supersymmetric configurations of D=11 supergravity which admit a null Killing spinor i.e.
C.N. Gowdigere +26 more
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Supersymmetric dS4 solutions in D = 11 supergravity
Journal of High Energy Physics, 2022 The necessary and sufficient conditions for warped product dS4 solutions in D = 11 supergravity to be supersymmetric are determined. The Killing spinor is associated with two possible stabilizer groups, SU(3) and G2.
M. Di Gioia, J. Gutowski
doaj +1 more source
Eigenvalue Estimates of the ${\rm spin}^c$ Dirac Operator and Harmonic Forms on K\"ahler-Einstein Manifolds [PDF]
, 2015 We establish a lower bound for the eigenvalues of the Dirac operator defined on a compact K\"ahler-Einstein manifold of positive scalar curvature and endowed with particular ${\rm spin}^c$ structures.
Nakad, Roger, Pilca, Mihaela
core +1 more source
Complete Riemannian manifolds admitting a pair of Einstein-Weyl structures [PDF]
Mathematica Bohemica, 2016 We prove that a connected Riemannian manifold admitting a pair of non-trivial Einstein-Weyl structures $(g, \pmømega)$ with constant scalar curvature is either Einstein, or the dual field of $ømega$ is Killing.
Amalendu Ghosh
doaj +1 more source
Conformal Killing forms on nearly Kähler manifolds [PDF]
Differential Geometry and its Applications, 2020 10 ...
Naveira, Antonio M., Semmelmann, Uwe
openaire +3 more sources
Asymptotic symmetries on Killing horizons [PDF]
, 2001 We investigate asymptotic symmetries regularly defined on spherically symmetric Killing horizons in the Einstein theory with or without the cosmological constant.
A. Ashtekar +38 more
core +2 more sources