An effective field theory of holographic dark energy

TL;DR

This paper develops a covariant local field theory for holographic dark energy, revealing it as a massive gravity theory with a scalar mode, linking the Compton wavelength to the universe's horizon, and exploring the UV-IR correspondence.

Contribution

It introduces a covariant local field theory framework for holographic dark energy, connecting it to massive gravity and elucidating the UV-IR relationship through scalar graviton dynamics.

Findings

Holographic dark energy modeled as massive gravity with scalar and tensor modes.

The Compton wavelength corresponds to the universe's future event horizon.

UV-IR correspondence arises from scalar graviton's strong coupling at a critical energy scale.

Abstract

A general covariant local field theory of the holographic dark energy model is presented. It turns out the low energy effective theory of the holographic dark energy is the massive gravity theory whose graviton has 3 polarisations, including one scalar mode and two tensor modes. The Compton wavelength is the size of the future event horizon of the universe. The UV-IR correspondence in the holographic dark energy model stems from the scalar graviton's strong coupling at the energy scale that marks the breaking down of the effective field theory.