Results 31 to 40 of about 4,621 (290)

Spinors in (Anti-)de Sitter Space

Journal of High Energy Physics, 2023
We explore analytical aspects of correlators involving Dirac spinors in d + 1-dimensional de Sitter space. Adapting the formalism of Sleight and Taronna, we show how to relate processes involving fermions in the in-in formalism to equivalent Witten ...
Vladimir Schaub
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Delocalized spinors

Journal of Physics A: Mathematical and General, 2004
Solutions to the four-dimensional Euclidean Weyl equation in the background of a general JNR N-instanton are known to be normalisable and regular throughout four-space. We show that these solutions are asymptotically given by a linear combination of simple singular solutions to the free Weyl equation, which can be interpreted as localised spinors. The `
Manton, N. S., Schunck, A. F.
openaire   +3 more sources

Gravity-Induced Geometric Phases and Entanglement in Spinors and Neutrinos: Gravitational Zeeman Effect

Universe, 2020
We show Zeeman-like splitting in the energy of spinors propagating in a background gravitational field, analogous to the spinors in an electromagnetic field, otherwise termed the Gravitational Zeeman Effect.
Banibrata Mukhopadhyay, Soumya Kanti Ganguly   +1 more
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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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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

Spinors on CP2 in d≥9 supergravity [PDF]

, 1985
When the internal space of a d ~ 9 supergravity theory is CP2 x M, for some M, it is shown how to put spinors on CP2 using spin" structures, without the introduction of any extra fields.
Dolan, Brian P.
core   +2 more sources

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
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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
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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
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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
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