According to an outlandish new notion, there could be one “anti-universe” that exists in the pre-Big Bang era. The concept presupposes that the primordial cosmos was compact, hot, and compact — and so homogeneous that time seems to be symmetrical in both directions. If indeed the new hypothesis is correct, dark matter is not as enigmatic as previously thought; it is just a different brand of a phantom element termed a neutrino that really can exist exclusively in this kind of world.
The basic symmetries of reality have been recognized by scientists. Charge, parity, and time are indeed the 3 most fundamental symmetries.
Physical properties generally respect the majority of such symmetries, which implies that deviations occur occasionally. However, no breach of all 3 symmetries has ever been detected simultaneously by scientists.
If you reverse the charges of every observable event, in reality, pick the perfect copy, and rerun it back into time, the events react identically. CPT symmetry is the abbreviation for this basic geometry.
To maintain CPT symmetry across the universe, a mirror-image universe needs to exist to counterbalance exactly our own. This universe might have polar opposite charges to ours, would really be mirrored, and would travel backwards through time. Our world is one of two identical counterparts. When both worlds are considered collectively, they exhibit CPT symmetry.
A few observations were discovered by the scholars. They anticipate that the 3 main left-handed neutrino types are antiparticles of their own. Moreover, they expect that one of neutrino types should have no mass. Finally, in this paradigm, inflation never happened. Instead, the cosmos organically filled with particles.
Inflation rocked space-time so violently that gravitational waves inundated the universe, scientists think. Such waves should not exist in a CPT-symmetric world. This might be a sign that the CPT-mirror universe paradigm is accurate.
