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Isotropic cosmology in metric-affine gauge theory of gravity

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arxiv gr-qc/9805007 v1 pith:E2YG2KFZ submitted 1998-05-04 gr-qc

classification gr-qc
keywords gravitationalisotropicmodelscurvatureequationsgaugegravityhomogeneous
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Geometrical structure of homogeneous isotropic models in the frame of the metric-affine gauge theory of gravity (MAGT) is analyzed. By using general form of gravitational Lagrangian including both a scalar curvature and various invariants quadratic in the curvature, torsion and nonmetricity tensors, gravitational equations of MAGT for homogeneous isotropic models are deduced. It is shown, that obtained gravitational equations lead to generalized cosmological Friedmann equation for the metrics by certain restrictions on indefinite parameters of gravitational Lagrangian. Isotropic models in the Weyl-cartan space-time are discussed.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Geometric formulation of $k$-essence and late-time acceleration

    gr-qc 2025-05 conditional novelty 6.0 of 10

    Integrable vectorial nonmetricity gravity is shown to be equivalent to purely kinetic quadratic k-essence, which fits late-time data as well as ΛCDM.

  2. Friedmann cosmology with hyperfluids of constant equation of state

    gr-qc 2025-08 unverdicted novelty 4.0 of 10

    In metric-affine gravity with hyperfluids of constant equation of state, Friedmann evolution is modified by hypermomentum and depends on the constants linking hypermomentum to matter density.

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