Warm modified Chaplygin gas shaft inflation

In this paper, we examine the possible realization of a new inflation family called “shaft inflation” by assuming the modified Chaplygin gas model and a tachyon scalar field. We also consider the special form of the dissipative coefficient Γ = a 0 T 3 ϕ 2 and calculate the various inflationary parameters in the scenario of strong and weak dissipative regimes. In order to examine the behavior of inflationary parameters, the n s – ϕ , n s – r , and n s – α s planes (where n s , α s , r , and ϕ represent the spectral index, its running, tensor-to-scalar ratio, and scalar field, respectively) are being developed, which lead to the constraints r < 0.11 , n s = 0.96 ± 0.025 , and α s = - 0.019 ± 0.025 . It is quite interesting that these results of the inflationary parameters are compatible with BICEP2, WMAP ( 7 + 9 ) and recent Planck data.