Quartic hilltop inflation revisited

We implement a procedure by which the parameters present in potential of Quartic Hilltop Inflation (QHI) are eliminated favor scalar spectral index $n_s$ and tensor-to-scalar ratio $r$. By doing this it is posible to obtain straightforward simple way equations previous analysis where an analytical treatment QHI large field limit given. This also allows more precise discussion general properties model. Also, using constraint from reheating epoch possible find bounds for model as well quantities interest such running index, temperature inflationary scale. Since found come expressions given exclusively terms $r$ they will continue narrow measurements observables become sensitive.