Results 31 to 40 of about 3,505 (307)

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

On spinors transformations [PDF]

Journal of Mathematical Physics, 2016
We begin showing that for even dimensional vector spaces V all automorphisms of their Clifford algebras are inner. So all orthogonal transformations of V are restrictions to V of inner automorphisms of the algebra. Thus under orthogonal transformations P and T—space and time reversal—all algebra elements, including vectors v and spinors φ, transform as
openaire   +3 more sources

Flag-dipole spinors: On the dual structure derivation and $${\mathcal {C}}$$ C , $${\mathcal {P}}$$ P and $${\mathcal {T}}$$ T symmetries

European Physical Journal C: Particles and Fields, 2020
In this manuscript we report the flag-dipole spinors dual structure direct definition and analyze the properties behind the corresponding operator which generates such structure.
R. J. Bueno Rogerio, A. R. Aguirre, C. H. Coronado Villalobos   +2 more
doaj   +1 more source

On the geometry and quantum theory of regular and singular spinors

Physics Letters B
We relate the Lounesto classification of regular and singular spinors to the orbits of the Spin(3,1) group in the space of Dirac spinors. We find that regular spinors are associated with the principal orbits of the spin group while singular spinors are ...
G. Papadopoulos
doaj   +1 more source

A spinorial energy functional: Critical points and gradient flow

, 2012
On the universal bundle of unit spinors we study a natural energy functional whose critical points, if dimM C 3, are precisely the pairs (g,φ) consisting of a Ricci-flat Riemannian metric g together with a parallel g-spinor φ.
Hartmut Weiss, Ammann, Bernd, Bernd Ammann, Weiss, Hartmut, Frederik Witt, Witt, Frederik   +5 more
core   +1 more source

Parallel spinors and holonomy groups

, 2000
10 pagesInternational audienceIn this paper we complete the classification of spin manifolds admitting parallel spinors, in terms of the Riemannian holonomy groups.
Moroianu, Andrei, Andrei Moroianu, Uwe Semmelmann, Semmelmann, Uwe   +3 more
core   +2 more sources

Spinor Equations of Smarandache Curves in E³

Mathematics
This study examines the spinor representations of TN (tangent and normal), NB (normal and binormal), TB (tangent and binormal) and TNB (tangent, normal and binormal)–Smarandache curves in three-dimensional Euclidean space E3.
Zeynep İsabeyoǧlu, Tülay Erişir, Ayşe Zeynep Azak   +2 more
doaj   +1 more source

A positive energy theorem for AdS solitons

Physics Letters B, 2023
The uncharged AdS4 soliton has been recently shown to be continuously connected to a magnetic, supersymmetric AdS4 soliton within N=8 gauged supergravity.
Andrés Anabalon, Mattia Cesàro, Antonio Gallerati, Alfredo Giambrone, Mario Trigiante   +4 more
doaj   +1 more source

Canonical representation of spherical functions: Sylvester's theorem, Maxwell's multipoles and Majorana's sphere

, 2004
Any eigenfunction of the Laplacian on a sphere is given in terms of a unique set of directions: these are Maxwell's multipoles, their existence and uniqueness being known as Sylvester's theorem. Here, the theorem is proved by realizing the multipoles are
Dennis, MR, Dennis, M.R., Dennis, M R; id_orcid   +2 more
core   +1 more source

Hyperosmotic stress induces PARP1‐mediated HPF1‐dependent mono(ADP‐ribosyl)ation

FEBS Letters, EarlyView.
Sorbitol‐induced hyperosmotic stress rapidly induces reversible mono(ADP‐ribosyl)ation (MARylation) on PARP1 without the signs of genotoxic signaling. We show that PARP1 autoMARylation is HPF1 dependent and forms hydroxylamine‐resistant O‐glycosidic linkages.
Anna Georgina Kopasz, Mihály Mérey, Rebeka Vásárhelyi, Ramóna Pék, Victor Imburchia, László Henn, Adrián Kószó, Nicholas D. Lakin, Ivan Ahel, Sébastien Huet, Ágnes Czibula, Gyula Timinszky   +11 more
wiley   +1 more source