Single-field D-type inflation in the minimal supergravity in light of Planck-ACT-SPT data

TL;DR

This paper develops new single-field D-type inflation models within minimal supergravity that align with recent high-precision cosmic microwave background observations, simplifying the potential and observable calculations.

Contribution

It introduces a straightforward construction of D-type inflation models in minimal supergravity consistent with latest CMB data, using e-folds as the running variable.

Findings

Models agree with Planck, ACT, SPT data

Inflaton potential and observables are simplified

Reconstruction procedure is streamlined

Abstract

The minimal supergravity framework is applied to a construction of new D-type single-field models of inflation in agreement with precision measurements of the cosmic microwave background radiation by Planck Collaboration, BICEP/Keck Collaboration, Atacama Cosmology Telescope and South Pole Telescope. The inflaton potential, the power spectrum of scalar perturbations, the cosmological observables and the reconstruction procedure can be very simple when using the e-folds as the running variable.