Dissipative universe-inflation with soft singularity. (English) Zbl 1362.83025
Summary: We investigate the early-time accelerated universe after the Big Bang. We pay attention to the dissipative properties of the inflationary universe in the presence of a soft type singularity, making use of the parameters of the generalized equation of state of the fluid. Flat Friedmann-Robertson-Walker metric is being used. We consider cosmological models leading to the so-called type IV singular inflation. Our obtained theoretical results are compared with observational data from the Planck satellite. The theoretical predictions for the spectral index turn out to be in agreement with the data, while for the scalar-to-tensor ratio, there are minor deviations.
MSC:
| 83F05 | Relativistic cosmology |
| 83C75 | Space-time singularities, cosmic censorship, etc. |
| 83C55 | Macroscopic interaction of the gravitational field with matter (hydrodynamics, etc.) |
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