# Einstein Equations, Cosmological Constant and all that

## TL;DR

This paper proposes that the cosmological constant is zero at large scales with tiny variations in fundamental constants causing a small Dark Energy, which has two sources: variations in G_N and nonlocal quantum effects.

## Contribution

It introduces a novel interpretation of Einstein equations where the cosmological constant vanishes at large scales, linking Dark Energy to fundamental constant variations and nonlocal quantum effects.

## Key findings

- Tiny variations in fundamental constants lead to a small Dark Energy.
- Two sources of Dark Energy identified: G_N variation and nonlocal quantum effects.
- The approach offers a new perspective on the nature of Dark Energy and the cosmological constant.

## Abstract

We suggest an interpretation of Einstein Equations of General Relativity at large scales in which the Cosmological constant is exactly zero in the limit of zero spacetime variations of fundamental constants. We argue that in a quasiclassical Universe such variation should be tiny which leads to a tiny value for the Dark Energy. Next, we suggest that the are two sources of the Dark Energy. The first is the variation in Newton's constant $G_N$. It is a form of Dark Energy in that it has negative pressure, but it differs from the Cosmological Constant by a negative contribution to the energy. The second is the contribution of (causal) nonlocalities to the Dark Energy. This comes together with a particular view of Quantum Mechanics and the wavefunction collapse, in particular. The collapse is neither dynamical nor subjective.