In science fiction, the idea of a mirror universe is a popular one. A world like ours where we might find our evil doppelganger or a version of ourselves who asked out our high school crush.
A new study shows that the idea of a mirror universe may help solve problems with the cosmological constant.
The Hubble constant is a measure of the expansion of the universe. The first demonstration of this expansion was done by Edward Hubble.
The expansion was measured over the next several decades at a rate of about 70 km/s. You can either give or take. Astronomers thought that the various methods would settle on a common value when our measurement became precise.
In the past few years, they disagree so much that they 888-492-0 888-492-0 888-492-0's are 888-492-0's. The problem is sometimes referred to as the Cosmic Tension problem.
The values of the Hubble constant cluster have been recorded. The values of fluctuations in the Cosmic Microwave Background and observations of distant supernovae are different. Physicists are trying to figure out why something doesn't seem right. There is a chance that the mirror universe could come here.
In theoretical physics, wild ideas tend to go out of style. The mirror universe idea is nothing new.
The problem of matter- antimatter symmetry was studied in the 1990s. Matter particles can be created in the lab, but antimatter particles can also be created. They arrive in pairs. Where did all the antimatter siblings go?
The Universe was thought to be a pair. Both the matter universe and the antimatter universe are related. The problem was solved. The idea fell out of favor due to a variety of reasons.
Unitless parameters are what the team found to be an invariance. The fine structure constant has a value of about 1137
If you are a theoretician, you can combine measured parameters in such a way that all the units cancel out and give you the same number.
Several unitless parameters stay the same when you modify the models to match the observed expansion rates. You can scale the rate of free-fall and the photon-electron scattering rate if you impose this symmetry more broadly. It means the existence of a mirror universe if this is true. Our universe would be affected by that pull.
The study is a proof of concept. It does not go as far as to prove that this is a solution to the Hubble constant problem.
There is a need for a more detailed model. It's an intriguing idea. If your doppelganger is out there, they can only affect your life.
This article was published in the past. The original article is worth a read.
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