The (p,q) inflation model

TL;DR

This paper introduces the (p,q) inflation model, a new polynomial potential with mixed powers of the inflaton field, capable of producing significant tensor perturbations and a large negative spectral index running.

Contribution

The paper presents the (p,q) inflation model, a novel polynomial potential with both positive and negative powers, enabling specific inflationary predictions.

Findings

Can generate large tensor perturbations

Produces a large negative running of spectral index

Offers a simple alternative to existing inflation models

Abstract

In this paper we propose a new inflation model named (p,q) inflation model in which the inflaton potential contains both positive and negative powers of inflaton field in the polynomial form. We will show that such a simple model can easily generate a large amplitude of tensor perturbation and a negative running of spectral index with large absolute value.