Holography and matter creation revisited

TL;DR

This paper explores a cosmological model combining holographic dark energy and matter creation, analyzing its dynamics and observational fit, revealing a transition from deceleration to acceleration and a quintessence-like behavior today.

Contribution

It introduces a unified model integrating holographic dark energy and matter creation effects, tested against observations, and discusses its cosmic evolution and current state.

Findings

Model shows a transition from decelerated to accelerated expansion.

Current state resembles a quintessence scenario.

Transition point cannot be precisely determined from the coincidence parameter.

Abstract

The consideration of the holographic dark energy approach and matter creation effects in a single cosmological model is carried out in this work accordingly, we discuss some cases of interest. We test this cosmological proposal against recent observations. Considering the best fit values obtained for the free cosmological parameters, the model exhibits a transition from a decelerated cosmic expansion to an accelerated one. The deceleration-acceleration transition can not be determined consistently from the coincidence parameter for this kind of model. At effective level the parameter state associated to the whole energy density contribution describes a quintessence scenario in the fluid analogy at present time.