2013/04/30 by Jafar Sadeghi, J. Sadeghi, H. Farahani +1 · 27 citations
Physics and Astronomy · #Black Holes and Theoretical Physics #COSMIC cancer database #Chaplygin gas #Cosmology #Cosmology and Gravitation Theories #Equation of state #Quantum Electrodynamics and Casimir Effect #Scale factor (cosmology) #Tachyon #Viscosity #Volume viscosity #gr-qc #hep-th
paper · pdf · doi:10.1007/s10509-013-1507-1
published in Astrophysics and Space Science 347(1), 209-219 (Springer Science+Business Media) · References added. Full version accepted in Astrophysics and space science journal. arXiv admin note: text overlap with arXiv:1301.2788 by other authors
arxiv created 2013/06/03 · openalex publication_date 2013/06/12 · arxiv updated 2013/08/05 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
In this paper we study the interaction between the general form of viscous varying modified cosmic Chaplygin gas and the Tachyon fluid in the framework of Einstein gravity. We want to reconstruct the Tachyon potential and total equation of state parameter graphically by using numerical methods. In the presence of deceleration parameter, the interaction between components becomes sign changeable to explain different evolutionary eras in the universe. We review the potential and total equation of state parameter in Emergent, Intermediate and Logamediate scenarios of scale factor numerically. Analysis of total equation of state parameter show that, ωtot<-1 and ωtot>-1 imply the phantom-like and quintessence-like behaviors respectively. we have checked the effects of cosmic and viscosity elements on the interaction process. Stability is checked in all the models by the squared velocity of sound.