Inflation Model (with doublet scalar field) consistent with Lambda CDM and WMAP cosmological observations

TL;DR

This paper proposes an inflation model with a doublet scalar field that aligns with Lambda CDM and WMAP data, explaining dark matter, normal matter, and dark energy within a unified framework.

Contribution

It introduces a modified inflation model incorporating a doublet scalar field and cosmological constant, calibrated with recent observational data.

Findings

Model fits WMAP and Lambda CDM observations

Accounts for normal and dark matter via scalar doublet

Consistent with observed density fluctuations

Abstract

Cosmological inflation models with modifications to include recent cosmological observations has been an active area of research after WMAP 3 results, which have given us information about the composition of dark matter, normal matter and dark energy and the anisotropy at the 300,000 years horizon with high precision. We work on inflation models of Guth and Linde and modify them by introducing a doublet scalar field to give normal matter particles and their supersymmetric partners which result in normal and dark matter of our universe. We include the cosmological constant term as the vaccuum expectation value of the stress energy tensor, as the dark energy. We callibrate the parameters of our model using recent observations of density fluctuations. We develop a model which consistently fits with the recent observations.