A New Perspective on the Cosmological Constant and Its Core Problems

TL;DR

This paper proposes a novel interpretation of the cosmological constant and introduces a new mechanism called Breaking Energy-Momentum Symmetry, aiming to address the fine-tuning and coincidence problems in cosmology through an alternative gravity framework.

Contribution

It presents a new physical interpretation of the cosmological constant and a mechanism that potentially resolves key cosmological problems within an alternative gravity theory.

Findings

Provides a unified approach to fine-tuning and coincidence problems.

Offers a new interpretation of the cosmological constant.

Suggests a natural resolution within an alternative gravity framework.

Abstract

One of the most enduring and unresolved challenges in modern theoretical and observational cosmology is the fine-tuning and coincidence problems associated with the cosmological constant. Rather than attempting to reconcile these issues within the standard LCDM framework where they remain effectively frozen, we adopt a fundamentally different viewpoint based on alternative theories of gravity. We argue that the root of these problems lies in a deep misinterpretation of the cosmological constant, particularly its identification with the quantum ground-state energy of spacetime. In this work, we propose a novel physical interpretation of the cosmological constant and introduce a new mechanism, termed Breaking Energy-Momentum Symmetry. This framework provides a natural and unified route toward alleviating, and potentially resolving, both the fine-tuning and coincidence problems, offering a compelling alternative to the conventional cosmological paradigm.