Three scientists from the Perimeter Institute for Theoretical Physics in Waterloo, Canada, proposed an intriguing theory in November 2018: the Big Bang created “its mirror image” in addition to the universe as we know it.
stars and twin spiral galaxies in space. Images were given by NASA.a universe that reaches into the past. The Universe “after the Big Bang” appears to us to move backwards.
In a Physical Review Letters article, the physicists Latham Boyle, Keran Finn, and Neil Turok proposed that the universe we currently inhabit is only a portion of the original one, and that, if this is the case, dark matter and inflation would no longer be consistent.
A new type of neutrino would be dark matter, which makes up around a third of the universe’s mass but is invisible to scientists (not yet observed). There would be no longer be a need for the time of inflation following the Big Bang, whose mechanism is unknown.
The same researchers investigate this “anti-Universe” in which everything flows backward in a new study that was recently published in the “Journal of Physics.” Their results are fascinating. Future research to look for gravitational waves or calculate the mass of the neutrino may be able to answer this question in the coming years.
No natural force can defy the built-in symmetry of our universe. These fundamental symmetries fit all of the equations that best describe reality, including Newton’s Universal Gravitation, Maxwell’s Electrodynamics, Einstein’s Relativity, and quantum mechanics. Whether time moves forward or backward, we assume the universe continues to “function.”
The three main symmetries are charge, parity, and time. The interaction will remain the same if we change the charges of all the particles in an interaction to their opposing charges (if we look at an interaction backward in time, it will work exactly the same). Charge, parity, and temporal symmetries are all combined in CPT symmetry.
There have never been three offenses seen at once, but they occasionally happen. Boyle, Finn, and Turok suggest extending this connected symmetry throughout the entire Universe in addition to natural forces. The idea “extends this symmetry to the’stage’ itself, the entire physical object of the Universe,” according to Sutter.
The Universe is asymmetrical, as may be seen by a simple glance “out there.” Charge, parity, and time are the three variables in the equation, and changing any one of them has no effect on the outcomes of any particular interaction. However, in our universe, time only flows in one direction, space expands and never contracts, and there is a large amount more matter than antimatter. As though “half” was lost.
If the Universe maintains CPT symmetry, there must be a mirror-image universe to balance ours, the study’s authors argue. This cosmos would have opposing charges, be a mirror image of ours, and go back in time from our perspective. Our universe is one of two ‘twins’ The two universes obey CPT symmetry.
How would the universe look inverted?
What would this Universe mean? A universe that respects CPT symmetry would expand naturally and fill with particles, without an initial (theoretical) period of fast expansion and inflation, whose mechanics remain unclear.
Second, a symmetrical world would introduce neutrinos: electron, muon, and tau. All three neutrino ‘flavors’ are left-handed (referring to the direction of their spin relative to their motion). All other particles have left- and right-handed variants, thus physicists have asked if right-handed neutrinos exist.
There must be at least one “right-handed” neutrino in a CPT-symmetric world. one that only has an impact on the universe through gravity and is invisible to scientific sensors. It sounds like you? The only way that dark matter may interact with other particles is through gravity.
Never!
Sadly, we won’t ever be able to reach that other twin universe because, if it does, it will be “before” our own. So, we will use theory. Perhaps?
In their article, Boyle, Finn, and Turok present evidence that might lead to the discovery of mirror universes. One prediction is that one type of neutrino in this CPT universe should be massless. Only upper limits can be placed on neutrino masses by physicists. The idea of a CPT symmetric universe would be strengthened if they were able to conclusively measure their masses and discovered that one of them had no mass.
The model concludes that inflation never occurred. Inflation-supporting physicists assert that this event must have shaken space and flooded it with gravitational waves. The concept of “primordial waves” shouldn’t exist in a universe with CPT symmetry. If no one finds them, the CPT mirror universe idea would be supported.
