Cosmology via Metric-Independent Volume-Form Dynamics

TL;DR

This paper introduces a novel cosmological model using metric-independent volume-forms to unify dark energy and dark matter, supported by a hidden symmetry, with discussions on its Hamiltonian and quantum formulations.

Contribution

It presents a new approach employing non-Riemannian volume-forms to unify dark energy and dark matter within a scalar field framework, including Hamiltonian and quantum analyses.

Findings

Unified dark energy and dark matter model constructed

Model exhibits a hidden Noether symmetry

Brief discussion on Hamiltonian and Wheeler-DeWitt quantization

Abstract

The method of non-Riemannian volume-forms (metric-independent covariant integration measure densities on the spacetime manifold) is applied to construct a unified model of dynamical dark energy plus dark matter as a dust fluid resulting from a hidden Noether symmetry of the pertinent scalar field Lagrangian. Canonical Hamiltonian treatment and Wheeler-DeWitt quantization of the latter model are briefly discussed.