Showing 881 - 900 results of 12,472 for search '"theories"', query time: 0.07s Refine Results
  1. 881

    Stationary BTZ space-time in Ricci-inverse and $$f({\mathcal {R}})$$ f ( R ) gravity theories by Faizuddin Ahmed, Abdelmalek Bouzenada

    Published 2024-12-01
    “…Abstract In this paper, we explore a stationary BTZ space-time within the framework of modified gravity theory, specifically focusing on Ricci-inverse gravity. …”
    Get full text
    Article
  2. 882

    De la place de la théorie de la valeur et de la monnaie dans la théorie de la régulation : critique et synthèse by Matthieu Montalban

    Published 2012-12-01
    “…Marxists and régulationnists are opposed on the usefulness value theory, especially labour theory of value. We show how régulationnists, that at the beginning were defending labour value theory, have substituated it to a theory of money. …”
    Get full text
    Article
  3. 883

    Quasinormal modes of three $$(2+1)$$ ( 2 + 1 ) -dimensional black holes in string theory, conformal gravity, and Hu–Sawicki F(R) theory via the Heun function by F. Naderi, A. Rezaei-Aghdam

    Published 2024-12-01
    “…Abstract We study the propagation of massless fermionic fields, implementing a family of special functions: Heun functions, in solving the wave equation in three three-dimensional backgrounds, including the BTZ black hole in string theory and Lifshitz black hole solutions in conformal gravity and Hu–Sawicki F(R) theory. …”
    Get full text
    Article
  4. 884
  5. 885
  6. 886
  7. 887
  8. 888

    Closed form solutions of bending Bi-directional functionally graded tapered beams using Euler and Timoshenko theories by Omar K. Omar, Mohammad Alshawabkeh, H. Alkhatib

    Published 2025-03-01
    “…Employing both Euler-Bernoulli and Timoshenko beam theories, the research provides a step-by-step derivation methodology, validated through detailed formulations and computational tools such as Maple software. …”
    Get full text
    Article
  9. 889
  10. 890
  11. 891

    Static and dynamic study of composite beams with a new interlaminar sliding field using different beam theories by Rachida Mohamed Krachaï, Noureddine Elmeiche, Ismail Mechab, Fabrice Bernard, Hichem Abbad

    Published 2025-01-01
    “…Conclusion: Further, a detailed study was conducted, depending on the geometric and material parameters, for the two mixed materials, i.e., concrete-wood and steel-concrete, with two interlaminar sliding fields, namely the classical sliding field based on the Timoshenko beam theory and a new interlaminar sliding field that is based on the high order theory. …”
    Get full text
    Article
  12. 892

    X-ray pulsed light curves of highly compact neutron stars as probes of scalar–tensor theories of gravity by Tulio Ottoni, Jaziel G. Coelho, Rafael C. R. de Lima, Jonas P. Pereira, Jorge A. Rueda

    Published 2024-12-01
    “…We explore the potential of NS X-ray pulsed light curve observations to probe deviations from general relativity (GR) within the scalar–tensor theory (STT) of gravity framework. We compute the flux from a single, circular, finite-size hot spot, accounting for light bending, Shapiro time delay, and Doppler effect. …”
    Get full text
    Article
  13. 893

    Distinguishing black holes with and without spontaneous scalarization in Einstein-scalar-Gauss–Bonnet theories via optical features by Xi-Jing Wang, Yuan Meng, Xiao-Mei Kuang, Kai Liao

    Published 2024-12-01
    “…Abstract Spontaneous scalarization in Einstein-scalar-Gauss–Bonnet theory admits both vacuum-general relativity (GR) and scalarized hairy black holes as valid solutions, which provides a distinctive signature of new physics in strong gravity regime. …”
    Get full text
    Article
  14. 894

    From relativistic gravity to the Poisson equation by Eric A. Bergshoeff, Giacomo Giorgi, Luca Romano

    Published 2025-02-01
    Subjects: “…Classical Theories of Gravity…”
    Get full text
    Article
  15. 895
  16. 896

    Limit Texts Mattering, 41 Tweets by Lance Olsen

    Published 2016-12-01
    Subjects:
    Get full text
    Article
  17. 897
  18. 898
  19. 899
  20. 900