Results 71 to 80 of about 1,685,988 (224)
Generalized teleparallel de Sitter geometries
European Physical Journal C: Particles and Fields, 2023 Theories of gravity based on teleparallel geometries are characterized by the torsion, which is a function of the coframe, derivatives of the coframe, and a zero curvature and metric compatible spin-connection.
A. A. Coley +3 more
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Revista de Investigación e Innovación en Ciencias de la Salud, 2023 Background. Working memory-based spatial cognition has attracted the attention of the scientific community in navigation and reorientation projects.
Chrysanthi Basdekidou +3 more
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Pseudo-Riemannian structures in Pati-Salam models
Journal of High Energy Physics, 2020 We discuss the role of the pseudo-Riemannian structure of the finite spectral triple for the family of Pati-Salam models. We argue that its existence is a very restrictive condition that separates leptons from quarks, and restricts the whole family of ...
A. Bochniak, T.E. Williams, P. Zalecki
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On the Use of Symmetry in Geometry [PDF]
Proceedings of the Edinburgh Mathematical Society, 1903 Two features characterise the treatment of Geometry as presented in Euclid's “Elements”: (1) the propositions are arranged in a definite sequence which cannot be greatly altered without invalidating the proofs; (2) there are no methods of proof applicable to a large number of propositions. If we except the method of reductio ad absurdum, it is scarcely
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Symmetries and conformal bridge in Schwarschild-(A)dS black hole mechanics
Journal of High Energy Physics, 2021 We show that the Schwarzschild-(A)dS black hole mechanics possesses a hidden symmetry under the three-dimensional Poincaré group. This symmetry shows up after having gauge-fixed the diffeomorphism invariance in the symmetry-reduced homogeneous Einstein-Λ
Jibril Ben Achour, Etera R. Livine
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On classification of geometries with SO(2,2) symmetry [PDF]
Journal of High Energy Physics, 2014 Motivated by the Extremal Vanishing Horizon (EVH) black holes, their near horizon geometry and the EVH/CFT proposal, we construct and classify solutions with (local) SO(2,2) symmetry to four and five dimensional Einstein-Maxwell-Dilaton (EMD) theory with positive, zero or negative cosmological constant Lambda, the EMD-$ $ theory, and also $U(1)^4 ...
Sadeghian, S. +2 more
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On Almost C(α)-Manifold Satisfying Certain Curvature Conditions
Cumhuriyet Science JournalThis research article is about the geometry of the almost C(α)- manifold. Some important properties of the almost C(α)- manifold with respect to the W_3- curvature tensor, such as W_3-flat and W_3- semi-symmetry, are investigated.
Pakize Uygun +2 more
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Bis(catecholato-κ2O,O′)bis(dimethyl sulfoxide-κO)titanium(IV)
Acta Crystallographica Section E: Crystallographic Communications, 2022 Bis(benzene-1,2-diolato-κ2O,O′)bis(dimethyl sulfoxide-κO)titanium(IV), [Ti(C6H4O2)2(C2H6OS)2], crystallizes with two crystallographically independent molecules in the space group P21/c emulating orthorhombic Pbca symmetry (β = 90.0445 (9)°].
Nisansala Hewage +3 more
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Metric-Affine Geometries with Spherical Symmetry [PDF]
Symmetry, 2020 We provide a comprehensive overview of metric-affine geometries with spherical symmetry, which may be used in order to solve the field equations for generic gravity theories which employ these geometries as their field variables. We discuss the most general class of such geometries, which we display both in the metric-Palatini formulation and in the ...
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Controlling transport of underdamped particles in two-dimensional driven Bravais lattices
Physical Review Research, 2020 We demonstrate the directed transport of underdamped particles in two-dimensional lattices of arbitrary geometry driven by an unbiased AC driving force.
Aritra K. Mukhopadhyay, Peter Schmelcher
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