Ultra-Slow-roll Inflation Dynamics in f(R,ϕ,X) Gravity

Yıl 2023, Cilt: 9 Sayı: 2, 270 - 273, 31.12.2023

Ali İhsan Keskin

https://doi.org/10.29132/ijpas.1381836

Öz

In this study, we apply the ultra-slow-roll condition to a model containing mixed terms in the background of f(R,ϕ,X) gravity. After the field equations are setting according to the model considered, the slow-roll indices of the inflation field are calculated. It is observed that the ultra-slow-roll inflation field comes to the fore for this case where the phenomenological mixed term is dominant. The inflation observables (the spectral index parameter and the tensor-to-scalar ratio) that occur in the background of gravity in the high-energy era of the universe are calculated, and we determine that the results are in agreement with Planck 2018 data.

Anahtar Kelimeler

F(R,Q,X) gravity, scalar field, Ultra-slow-roll inflation, high energy, cosmology

f(R,ϕ,X) Kütleçekiminde Ultra Yavaş Dönüşlü Enflasyon Dinamikleri

Öz

Bu çalışmada f(R,ϕ,X) yerçekiminin arka planında karışık terimler içeren bir modele ultra yavaş yuvarlanma koşulunu uyguladık. Ele alınan modele göre alan denklemleri oluşturulduktan sonra enflasyon alanının yavaş yuvarlanma endeksleri hesaplandı. Fenomenolojik karma terimin hâkim olduğu bu durumda ultra-yavaş yuvarlanma enflasyon alanının ön plana çıktığı görülmektedir. Evrenin yüksek enerji çağında yerçekiminin arka planında meydana gelen enflasyon gözlemlenebilirleri (spektral indeks parametresi ve tensör/skaler oranı) hesaplandı ve sonuçların Planck 2018 verileriyle uyumlu olduğunu tespit ettik.

Anahtar Kelimeler

f(R, ϕ, X) kütleçekim, skaler alan, ultra-yavaş dönme enflasyonu, yüksek enerji, kozmoloji

Kaynakça

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