Quantum Evolution of the Dilaton-Inflaton Model

TL;DR

This paper investigates the quantum evolution of a universe model with dilaton and inflaton fields, showing how inflation conditions depend on their coupling constants in closed and flat models.

Contribution

It introduces a quantum cosmological analysis of a two-scalar-field model, highlighting the impact of coupling constants on inflation conditions in different universe geometries.

Findings

Inflation conditions are highly sensitive to the coupling constants.

Both closed and flat models exhibit similar dependence on scalar field couplings.

Quantum effects influence the realization of inflation in scalar field cosmology.

Abstract

The quantum evolution of a model of the universe with account of two scalar fields ({\it dilaton} and {\it inflaton}) is considered. For this case, the closed and flat models has been examined. It is shown that in both cases the realization of conditions necessary for inflation is strongly depends on coupling constant for dilaton and inflaton fields.