A new mechanism for dark matter generation from an interacting cosmological constant

TL;DR

This paper introduces a novel mechanism where an interacting evolving cosmological constant generates dark matter with a unique mass spectrum, potentially addressing the cosmological constant problem and leaving observable signatures on the CMBR.

Contribution

It presents a new scenario linking the cosmological constant's evolution and interaction to dark matter production, offering insights into the cosmological constant problem.

Findings

Dark matter densities can be generated through interaction with an evolving cosmological constant.

The model predicts characteristic arc-like signatures on the Cosmic Microwave Background Radiation.

Provides a potential solution to the cosmological constant problem.

Abstract

We propose an alternative scenario for the dark matter generation from an evolving cosmological constant which interacts with the dominant background in certain intermediate phase of the universe, and relaxes to the observed small value at present. In this way, it is shown that the interaction of the cosmological constant with the radiation or matter might generate the dark matter densities with a varied mass spectrum in the universe with their characteristic arc-like frozen signatures on the Cosmic Microwave Background Radiation (CMBR). This approach also suggests a possible solution to the long standing cosmological constant problem.