PARAMETRIZATION OF DECELERATION PARAMETER IN ALTERNATIVE GRAVITATION THEORIES

Açan Yıldız G. D., Güdekli E.

TURKISH PHYSICAL SOCIETY 40TH INTERNATIONAL PHYSICS CONGRESS, Muğla, Türkiye, 2 - 06 Eylül 2024, ss.255

  • Yayın Türü: Bildiri / Özet Bildiri
  • Basıldığı Şehir: Muğla
  • Basıldığı Ülke: Türkiye
  • Sayfa Sayıları: ss.255
  • İstanbul Üniversitesi Adresli: Evet

Özet

In this study, we investigate an alternative gravitational model that includes both a

slowdown and an accelerated expansion phase of the Universe. In this context, we

examine various cosmological implications using the Hubble function H(z) directly

obtained from the linear redshift parameterization of q(z). Furthermore, we determine

model parameters that are consistent with observational data by including the H(z),

Pantheon and combined H(z) + Pantheon analysis datasets. We also analyze various

geometric parameters, including the slowdown parameter, the state finder and Om(z)

diagnostics, to evaluate the Dark Energy (DE) behavior predicted by the default model.