Effects of deformed phase space on scalar field cosmology

TL;DR

This paper investigates how phase space deformations, introduced via noncommutative geometry, affect scalar field cosmology, leading to a non-singular universe volume and late-time acceleration.

Contribution

It introduces a deformed symplectic structure in scalar field cosmology and demonstrates its effects on universe evolution and acceleration.

Findings

Universe volume becomes non-singular due to deformation

Late-time acceleration arises from noncommutative effects

Deformation modifies the cosmological dynamics significantly

Abstract

The effects of phase space deformations in standard scalar field cosmology are studied. The deformation is introduced by modifying the symplectic structure of the minisuperspace variables to have a deformed Poisson algebra among the coordinates and the canonical momenta. It is found that in the deformed minisuperspace model the volume of the universe is non singular. Finally, the late time evolution gives rise to an accelerating scale factor, this acceleration is a consequence of the noncommutative deformation.