At the current time, we cannot tell if Einstein’s cosmological constant—or some other theory—is the correct description for dark energy in the Universe. A proposed measure based on existing data may help us to better distinguish these ideas.
The universe we see today is the result of mass-energy fluctuations during the rapid inflationary expansion that followed the big bang. A new approach to analyzing those fluctuations brings theory into better alignment with observational data.
Phys. Rev. Focus6, 22 (2000) – Published November 16, 2000
Cosmologists wonder why we happen to live in the era when the three major components of the Universe exist in similar quantities. One explanation involves only the most basic parameters from high energy physics.