Riccion as a Cosmic Cold Dark Matter Candidate and late cosmic acceleration

TL;DR

This paper explores the potential of riccion, a curvature-inspired particle from higher-derivative gravity, as a candidate for cold dark matter and explains late cosmic acceleration without exotic dark energy.

Contribution

It investigates riccion as a novel dark matter candidate and demonstrates that cosmic acceleration can arise purely from curvature effects in gravity.

Findings

Riccion can act as a source of cold dark matter.

Cosmic acceleration is achieved without exotic dark energy.

Curvature effects alone can explain late universe acceleration.

Abstract

In the past few years, a possibility is investigated, where curvature itself behaves as a source of dark energy. So, it is natural to think whether curvature can produce dark matter too. It is found that, at classical level, higher-derivative gravity yields curvature inspired particles namely riccions [11]. Here, it is probed whether riccion can be a possible source of dark matter. Further, it is found that the late universe accelerates. Here, it is interesting to see that acceleration is obtained from curvature without using any dark energy source of exotic matter.