Қазақ ұлттық қыздар педагогикалық университеті / Казахский национальный женский педагогический университет

Постоянный URI для этого сообществаhttps://cris.qyzpu.edu.kz/handle/123456789/1

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2023 - 20242

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Автор: search.filters.author.Temirbolat AitassovЯзык: search.filters.language.Английский

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    Тип записи:Публикация,
    Stability Properties of Geometrothermodynamic Cosmological Models
    (Multidisciplinary Digital Publishing Institute, 2023-09-28)
    Nurzada Beissen
    ;
    Medeu Abishev
    ;
    Manas Khassanov
    ;
    Temirbolat Aitassov
    ;
    Sagira Mamatova
    We consider a particular isotropic and homogeneous cosmological model, in which the equation of state is obtained from a thermodynamic fundamental equation by using the formalism of geometrothermodynamics (GTD). The model depends effectively on three arbitrary constants, which can be fixed to reproduce the main aspects of the inflationary era and the ΛCDM paradigm. We use GTD to analyze the geometric properties of the corresponding equilibrium space and to derive the stability properties and phase transition structure of the cosmological model.
    Цитирования (OpenAlex) 1Цитирования (OpenCitations) 1
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    Тип записи:Публикация,
    Optical Medium Approach: Simplifying General Relativity and Nonlinear Electrodynamics for Educational Purposes
    (Multidisciplinary Digital Publishing Institute, 2024-12-05)
    Saken Toktarbay
    ;
    Nurzada Beissen
    ;
    Manas Khassanov
    ;
    Temirbolat Aitassov
    ;
    A. Sadu
    This paper explores the optical approach to simplifying complex concepts in general relativity (GR) and nonlinear vacuum electrodynamics. The focus is on using optical analogies to simplify the understanding of spacetime curvature and interactions in strong gravitational and magnetic fields. We demonstrate how applying concepts of effective refractive index can facilitate the teaching and comprehension of GR optical effects, such as gravitational lensing and the behavior of light around massive objects. Additionally, the paper covers the application of optical analogies in the context of nonlinear vacuum electrodynamics, showing how strong magnetic fields affect light propagation. This interdisciplinary approach provides a more natural understanding and modeling of complex physical phenomena, making them better accessible for study and teaching.