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The temperature at the end of reheating and the length of this cosmologicalphase can be bound to the inflationary observables if one considers thecosmological evolution from the time of Hubble crossing until today. There aremany examples in the literature where it is made for single-field inflationarymodels and a constant equation of state during reheating. We adopt two simplevarying equation of state parameters during reheating, combine the allowedrange of the reheating parameters with the observational limits of the scalarperturbations spectral index and compare the constraints of some inflationarymodels with the case of a constant equation of state parameter duringreheating.

CMB Constraints on Reheating Models with Varying Equation of State