A Null Test of the Cosmological Constant
Takeshi Chiba, Takashi Nakamura
TL;DR
This paper proposes a test to verify the cosmological constant hypothesis by checking a consistency relation among cosmological observables, where any violation would challenge the current understanding of cosmic acceleration.
Contribution
It introduces a novel consistency relation in general relativity that can be used to test the validity of the cosmological constant as the cause of universe acceleration.
Findings
The relation holds if the cosmological constant explains acceleration.
Breaking the relation indicates new physics beyond the cosmological constant.
Provides a method to test dark energy models against observations.
Abstract
We provide a consistency relation between cosmological observables in general relativity with the cosmological constant. Breaking of this relation at any redshift would imply the breakdown of the hypothesis of the cosmological constant as an explanation of the current acceleration of the universe.
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