Quintessence with Hybrid Potential

TL;DR

This paper numerically solves the evolution equations of a universe model with a hybrid scalar field potential, showing results consistent with current cosmological observations.

Contribution

It introduces a numerical approach to analyze a universe with a hybrid potential scalar field, combining exponential and power-law forms, aligning theoretical predictions with observed data.

Findings

Density parameter evolution matches current universe observations

Model's present-day parameters closely align with measured values

Age and size of universe derived from the model are consistent with observations

Abstract

I present the numerical solution of equations of the evolution of a universe containing background fluids (radiation, dark matter and baryonic matter), plus a scalar matter field with a hybrid potential that is a combination of exponential potential and power-law potential. The plot of the evolution of density parameters is compatible with our universe; and today's values of density parameters of dark energy, dark matter, baryonic matter, and Hubble parameter, and the age and size of our universe, found from this model, are very close to (and some times the same as) measured values.