Bianchi Tip-V Evreninde Granda-Oliveros Ölçekli Tsallis Holografik Karanlık Enerji

Yapılan çok çeşitli kozmolojik gözlemler bize evrenimizin ivmeli genişleme fazında olduğunu göstermektedir. karanlık Enerji ve Karanlık Madde bu ivmeli genişlemeye sebeplerinden ikisi olduğu düşünülmektedir. Dolayısıyla son zamanlarda bilim insanları karanlık enerji ve karanlık madde üzerine birçok çalışma yapmaktadır. Özellikle çok sayıda enerji yoğunluğu ifadesi yazılarak uzay zamanın yapısı hakkında araştırmalar yapılmaktadır. Tsallis holografik karanlık enerji (THKE) modeli de bu anlamda güncel ve ilgi çekici bir konumdadır. Çalışmada Bianchi tipi V uzay zaman modeli özelinde Tsallis holografik karanlık enerji modeli ile bazı skaler alanlar (quintessence, takyon, dilaton skaler alanları vb.) arasında bir ilişki kurulmaktadır. Adı geçen ilişki Granda-Oliveros (GO) kesilimi çerçevesinde ele alınmaktadır. Durum denklemi parametresi analitik olarak hesaplanarak evrenimizin bu model için hangi fazda olduğu çizilen grafiklerle araştırılmaktadır. Ayrıca kinetik enerji ile skaler potansiyelin zamanla nasıl değiştiği bulunmaktadır. Sonuçlar yine nümerik olarak grafikler ile analiz edilmektedir.

Anahtar Kelimeler:

Bianchi tipi uzay zaman modelleri, Karanlık enerji, Skaler alanlar

Tsallis Holographic Dark Energy with Granda-Oliveros Scale in Bianchi-Type V Universe

A wide variety of cosmological observations show us that our universe is in an accelerated expansion phase. Dark Energy and Dark Matter are thought to be two of the causes of this accelerated expansion. Therefore, scientists have recently been doing many studies on dark energy and matter. In particular, many energy density relations are written, and research is done about space-time structure. In this sense, the Tsallis holographic dark energy model is also in a current and interesting position. The study establishes a relationship between the Tsallis holographic dark energy (THDE) model and some scalar fields (quintessence, tachyon, dilaton scalar fields, etc.) specific to the Bianchi-type V space-time model. The relationship above is discussed within the Granda-Oliveros (GO) cut-off framework. The state equation parameter is calculated analytically, and the phase of our universe for this model is investigated with the graphs drawn. In addition, there is how the kinetic energy and the scalar potential change with time. The results are again analyzed numerically with graphs.

Keywords:

Bianchi-type space-time models, Dark energy, Scalar fields,

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