Sign changeable coupled ghost dark °uid in the realization of cosmological bounce in°ation

Saha S., Chattopadhyay S., Gudekli E.

International Journal of Modern Physics D, cilt.33, sa.12, 2024 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 33 Sayı: 12
  • Basım Tarihi: 2024
  • Doi Numarası: 10.1142/s0218271824500421
  • Dergi Adı: International Journal of Modern Physics D
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Communication Abstracts, INSPEC, Metadex, zbMATH, Civil Engineering Abstracts
  • Anahtar Kelimeler: bounce in°ation, Ghost dark energy, GSL, sign-changeable interaction
  • İstanbul Üniversitesi Adresli: Evet

Özet

In this paper, we determine the exact solutions of viscous ghost models in sign-changeable interaction scenarios for two choices of bouncing scale factor, assuming the existence of viscous interacting °uid across the °at Friedmann{Robertson{Walker universe in the form of ghost dark energy and pressure-less dark matter. The study demonstrates how the cosmological parameters evolve in viscous sign-changeable interacting scenarios to see the transition time frame. Next, a bounce in°ation model is investigated, including the tensor-to-scalar ratio, scalar spectral index, and slow-roll parameters analytical results. Since in°ation is usually associated with scalar ¯elds, the study looked at a possible relationship between sign-changeable interacting ghost dark °uids and scalar ¯eld models. Lastly, the applicability of the generalized second law (GSL) of thermodynamics is examined for the scenarios that are being studied.