Výsledky vyhledávání - "Ekim Taylan Hanımeli"

Akademický článek

Can Dark Energy Emerge from a Varying G and Spacetime Geometry?

Autor: Ekim Taylan Hanımeli, Isaac Tutusaus, Brahim Lamine, Alain Blanchard

Publikováno v: Universe, Vol 8, Iss 3, p 148 (2022)

The accelerated expansion of the universe implies the existence of an energy contribution known as dark energy. Associated with the cosmological constant in the standard model of cosmology, the nature of this dark energy is still unknown. We will dis

Externí odkaz: https://doaj.org/article/432c5187cf214723a343e0c932f023c4

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Time-dependent $G$ in Einstein's equations as an alternative to the cosmological constant

Autor: Isaac Tutusaus, Ekim Taylan Hanımeli, Brahim Lamine, Alain Blanchard

Publikováno v: Phys.Rev.D
Phys.Rev.D, 2020, 101 (6), pp.063513. ⟨10.1103/PhysRevD.101.063513⟩
Digital.CSIC. Repositorio Institucional del CSIC
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Physical Review D
Physical Review D, American Physical Society, 2020, 101 (6), pp.063513. ⟨10.1103/PhysRevD.101.063513⟩

In this work, we investigate cosmologies where the gravitational constant varies in time, with the aim of explaining the accelerated expansion without a cosmological constant. We achieve this by considering a phenomenological extension to general rel

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5f02eb53fb0e533ba2b08d6243859650
https://hal.archives-ouvertes.fr/hal-02383316

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Low-redshift tests of Newtonian cosmologies with a time-varying gravitational constant

Autor: Brahim Lamine, Alain Blanchard, Ekim Taylan Hanımeli, Isaac Tutusaus

Publikováno v: Mon.Not.Roy.Astron.Soc.
Mon.Not.Roy.Astron.Soc., 2020, 497 (4), pp.4407-4415. ⟨10.1093/mnras/staa2310⟩
Digital.CSIC. Repositorio Institucional del CSIC
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In this work, we investigate Newtonian cosmologies with a time-varying gravitational constant, $G(t)$. We examine whether such models can reproduce the low-redshift cosmological observations without a cosmological constant, or any other sort of expli

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1deef5d0e40c683f10aa7a0563ddde33
https://hal.archives-ouvertes.fr/hal-02222915

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