Browsing Physics by Author "Abebe, Amare"

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    • Perturbations in the interacting vacuum 

      Munyeshyaka, Albert; Ntahompagaze, Joseph; Mutabazi, Tom; Mbonye, Manasse.R; Ayirwanda, Abraham; Twagirayezu, Fidele; Abebe, Amare (arXiv, 2022)
      In this study, we present the evolution of cosmological perturbations in a universe consisting of standard matter and interacting vacuum. We use the 1 + 3 covariant formalisms in perturbation framework and consider two ...