Results 31 to 40 of about 11,761,264 (219)
Killing forms on quaternion-Kähler manifolds [PDF]
Annals of Global Analysis and Geometry, 2005 We show that every Killing p-form on a compact quaternion-K hler manifold has to be parallel for p greater than 1.
Moroianu, Andrei, Semmelmann, Uwe
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Twisted form hierarchies, Killing-Yano equations and supersymmetric backgrounds
Journal of High Energy Physics, 2020 We show that the Killing spinor equations of all supergravity theories which may include higher order corrections on a (r,s)-signature spacetime are associated with twisted covariant form hierarchies.
G. Papadopoulos
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A Tad-like apparatus is required for contact-dependent prey killing in predatory social bacteria
bioRxiv, 2021 Myxococcus xanthus, a soil bacterium, predates collectively using motility to invade prey colonies. Prey lysis is mostly thought to rely on secreted factors, cocktails of antibiotics and enzymes, and perhaps a mysterious contact-dependent mechanism.
Sofiene Seef +10 more
semanticscholar +1 more source
Spacetime characterizations of Λ-vacuum metrics with a null Killing 2-form [PDF]
, 2016 An exhaustive list of four-dimensional Λ-vacuum spacetimes admitting a Killing vector ξ whose self-dual Killing two-form μ ν is null is obtained assuming that the self-dual Weyl tensor is proportional to the tensor product of μ ν by itself.
M. Mars, J. Senovilla
semanticscholar +1 more source
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
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Supramolecular attack particles are autonomous killing entities released from cytotoxic T cells
Science, 2020 Supramolecular attack particles Cytotoxic T cells (CTLs) are at the front lines against cancer and chronic infection. T cells kill by secreting caspase-activating granzymes and the pore-forming protein perforin from dense core granules.
Š. Bálint +6 more
semanticscholar +1 more source
Killing 2-Forms in Dimension 4 [PDF]
, 2017 36 ...
Andrei Moroianu, Paul Gauduchon
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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
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The conformal Killing equation on forms—prolongations and applications [PDF]
Differential Geometry and its Applications, 2008 We construct a conformally invariant vector bundle connection such that its equation of parallel transport is a first order system that gives a prolongation of the conformal Killing equation on differential forms. Parallel sections of this connection are related bijectively to solutions of the conformal Killing equation.
Josef Šilhan, A. Rod Gover
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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
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