Results 101 to 110 of about 1,975 (257)
Topological defects in f(T) theory of gravity
European Physical Journal C: Particles and FieldsIn this paper, we investigate the behaviour of domain walls and one-dimensional cosmic string with locally rotationally symmetric (LRS) Bianchi type-I metric in the context of f(T) gravity. Three different types of deceleration parameter (DP) forms, such
S. P. Hatkar, D. P. Tadas, S. D. Katore
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Polar‐low track prediction using machine‐learning methods
Quarterly Journal of the Royal Meteorological Society, EarlyView.Machine‐learning models are developed to produce reliable and efficient forecasts of polar‐low (PL) trajectories 12 hours ahead. A temporal model (RLSTM) benefiting from the rolling‐forecast strategy, improves overall prediction accuracy and is suitable for quick experimentation, while a spatiotemporal model (PL‐UNet), incorporating both historical and
Ziying Yang +4 more
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Weighing the curvature invariants
European Physical Journal C: Particles and FieldsWe prove several inequalities between the curvature invariants, which impose constraints on curvature singularities. Some of the inequalities hold for a family of spacetimes which include static, Friedmann–Lemaître–Robertson–Walker, and Bianchi type I ...
Jan Dragašević +2 more
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East European Journal of PhysicsThis paper investigates and examines a wide range of findings related to the description of holographic Ricci dark energy (HRDE) with the bulk viscosity within Universe's late-time accelerated expansion in the framework of an anisotropic Bianchi type-III
P.E. Satyanarayana, K.V.S. Sireesha
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Abstract and Applied Analysis, 2014 We find a new class of invariant inhomogeneous Bianchi type-I cosmological models in electromagnetic field with variable magnetic permeability. For this, Lie group analysis method is used to identify the generators that leave the given system of ...
Ahmad T. Ali
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Sustainable Development, EarlyView.ABSTRACT Wind energy plays an important role in achieving energy transition and sustainable development goals, yet disparities between socio‐political and community acceptance continue to hinder project implementation. Understanding this gap is essential for designing more socially responsive wind energy policies.
Kaiqi Liu +5 more
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Ricci Flow Singularity for Triaxial Bianchi IX Metric
, 2019 26 pages, 6 ...
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Sustainable Development, EarlyView.ABSTRACT The dynamic nature of small islands being geographically isolated and their perceived connectedness with global networks complicates research attempts to draw general conclusions on whether insularity leads to marginalization or strengthens their resilience for sustainable development.
Toheeb Lekan Jolaosho +2 more
wiley +1 more source
Non-Abelian target space duals of Thurston geometries
Nuclear Physics BIn this study, we proceed to investigate the Thurston geometries from the point of view of their Poisson-Lie (PL) T-dualizability. First of all, we find all subalgebras of Killing vectors that generate group of isometries acting freely and transitively ...
Ali Eghbali +2 more
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MASSIVE SCALAR FIELD IN BIANCHI TYPE-V METRIC
, 2015 We have considered Bianchi type –V space time in the presence of massive scalar field in the frame work of Einstein’s theory. We have derived Einstein’s field equations in the presence of scalar field coupled with mass parameter. Some physical and geometrical properties of the solutions have been discussed by using mathematica software.
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