The Value of the Cosmological Constant

TL;DR

This paper reformulates the cosmological constant as a field constrained by causality, deriving a new Einstein constraint that predicts its observed value and the universe's spatial curvature, with testable implications for cosmological data.

Contribution

It introduces a novel approach by making the cosmological constant a field with causality-based constraints, leading to specific predictions for its value and the universe's curvature.

Findings

Predicts the cosmological constant as ~10^(-122) consistent with observations.

Forecasts the spatial curvature parameter _{k0}  -0.0055, testable by Planck data.

Provides a new quantum cosmological framework with testable predictions.

Abstract

We make the cosmological constant, {\Lambda}, into a field and restrict the variations of the action with respect to it by causality. This creates an additional Einstein constraint equation. It restricts the solutions of the standard Einstein equations and is the requirement that the cosmological wave function possess a classical limit. When applied to the Friedmann metric it requires that the cosmological constant measured today, t_{U}, be {\Lambda} ~ t_{U}^(-2) ~ 10^(-122), as observed. This is the classical value of {\Lambda} that dominates the wave function of the universe. Our new field equation determines {\Lambda} in terms of other astronomically measurable quantities. Specifically, it predicts that the spatial curvature parameter of the universe is {\Omega}_{k0} \equiv -k/a_(0)^(2)H^2= -0.0055, which will be tested by Planck Satellite data. Our theory also creates a new picture of self-consistent quantum cosmological history.