A fundamental length as a candidate for dark energy: a DSR inspired FRW spacetime

TL;DR

This paper proposes that a fundamental length from DSR-inspired spacetime can explain the transition of the universe from matter-dominated to accelerating expansion, mimicking dark energy effects.

Contribution

It introduces a fundamental length in DSR-inspired spacetime that alters cosmological dynamics, providing a novel explanation for dark energy phenomena.

Findings

The scale factor behavior changes from dust-filled to accelerating due to the fundamental length.

The model reproduces effects similar to a cosmological constant without invoking dark energy.

The approach offers a new perspective on the universe's accelerated expansion.

Abstract

We show that the existence of a fundamental length, introduced in Deformed Special Relativity (DSR) inspired minisuper (phase-) space, causes the behavior of the scale factor of the universe to change from that of a universe filled with dust to an accelerating universe driven by a cosmological constant.