Results 31 to 40 of about 1,975 (257)
Bianchi type A hyper-symplectic and hyper-Kähler metrics in 4D [PDF]
Classical and Quantum Gravity, 2011 Title changed, exposition and terminology clarified, final vesion to appear Class. Quant. Grav.
de Andrés, Luis C. +5 more
openaire +2 more sources
Bulk-Brane Matching in Bianchi-Types Brane World
Advances in High Energy Physics, 2011 We discuss a comprehensive description of the geometry of the brane-world cosmologies, and present bulk and brane structure and matching between brane and bulk metrics.
O. Sevinc, E. Gudekli
doaj +1 more source
Anisotropic homogeneous string cosmology with two-loop corrections
Nuclear Physics B, 2017 The two-loop (order α′) β-function equations, which are equivalent to the equations of motion of α′-corrected string effective action, are considered for anisotropic homogeneous space–times.
F. Naderi, A. Rezaei-Aghdam
doaj +1 more source
Teleparallelism in the algebraic approach to extended geometry
Journal of High Energy Physics, 2022 Extended geometry is based on an underlying tensor hierarchy algebra. We extend the previously considered L ∞ structure of the local symmetries (the diffeomorphisms and their reducibility) to incorporate physical fields, field strengths and Bianchi ...
Martin Cederwall, Jakob Palmkvist
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Proper homothetic vector fields of Bianchi type I spacetimes via Rif tree approach
Results in Physics, 2021 This paper deals with the study of homothetic vector fields of Bianchi type I spacetimes using Rif tree approach. Instead of directly integrating the homothetic symmetry equations, a computer algorithm is used to transform these equations to the reduced ...
Ashfaque H. Bokhari +3 more
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Renyi Entropy Based Dark Energy Models in Bianchi I Cosmology [PDF]
FDK-2023-4613In this study, the Renyi holographic dark energy (RHDE) model is analyzed in the framework of the f(R, T) theory for the homogeneous anisotropic Bianchi metric.
Aktaş, Can, Battaloğlu, Mutlu
core +1 more source
Heliyon, 2019 In this paper, we discuss spatially homogeneous and anisotropic Bianchi type-V dark energy cosmological model in the presence of an attractive massive scalar field in general relativity.
R.L. Naidu, Y. Aditya, D.R.K. Reddy
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Bianchi type–I Model with Time Varying Λ and G: The Generalized Solution
Open Astronomy, 2020 In this paper, we have investigated the homogeneous and anisotropic Bianchi type–I cosmological model with a time-varying Newtonian and cosmological constant.
Alfedeel Alnadhief H. A.
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COVARIANT INTEGRAL QUANTIZATIONS AND THEIR APPLICATIONS TO QUANTUM COSMOLOGY
Acta Polytechnica, 2016 We present a general formalism for giving a measure space paired with a separable Hilbert space a quantum version based on a normalized positive operator-valued measure.
Jean-Pierre Gazeau
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Casimir force induced by electromagnetic wave polarization in Kerr, Gödel and Bianchi–I spacetimes
European Physical Journal C: Particles and Fields, 2020 Electromagnetic waves propagation on either rotating or anisotropic spacetime backgrounds (such as Kerr and Gödel metrics, or Bianchi–I metric) produce a reduction of the magnitude of Casimir forces between plates.
Felipe A. Asenjo, Sergio A. Hojman
doaj +1 more source