The holographic principle and parallel universe.

"The holographic principle is a property of string theories and a supposed property of quantum gravity that states that the description of a volume of space can be thought of as encoded on a lower-dimensional boundary to the region – such as a light-like boundary like a gravitational horizon." (Wikipedia, Holographic principle)

The holographic principle means that the Universe can be a hologram. The idea is that the crossing energy, or superstrings can cause a scattering effect. That effect breaks those strings into pieces. And then material forms in those points where those strings impact with each other. The thing that causes impacts of those superstrings is the expansion of superstrings. The interesting detail in the holographic principle is that this thing means that photons can turn into quarks. 

Then the holographic principle causes an idea that making those photon clouds denser and shooting light waves crossing each other is a possibility to form material. This model means wave-particle duality, WMD. Wave movement can form material and material can turn into wave movement. And the material is only the reflection, an ultra-dense hologram. The model is that the light beams that crossed each other formed the first particles. When we think that time is the only real thing in the universe and the superstring expands all the time, that thing explains why entropy grows all the time. 

The thing that makes parallel universe theory along with the WMD  one of the most interesting models that we can even imagine. The idea is that new universes can form in the points between those universes where radiation that comes from them touches each other. If radiation that comes from another universe is very weak radiation that comes from our universe pushes that radiation away from our universe. If that radiation slides at the edge of our universe’s plasma and photon halo that means we cannot see that radiation. Same way as the heliosphere turns off much of the radiation and plasma that comes from other stars, our galaxy’s halo and the edge of the universe will push weak signals away. If there are other universes there should be similar plasma impact waves that surround our solar system and our galaxy. 

The thing is this: There is evidence against and supporting parallel- or multiverse. The main thing is that there is not enough evidence of that model. The parallel- and multiverse are not the same thing. A parallel universe means that other universes will be in extra dimensions. And the multiverse means that those universes are in 3D spacetime with our universe. 

The model of holographic principle where crossing superstrings forms “electric arcs” that form universes and material. 

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The evidence that supports and against the multiverse. 

-Cosmic microwave background radiation anomalies: Scientists studying the afterglow of the Big Bang have found strange patterns in space that some believe could be caused by another universe bumping into ours.

-Quantum mechanics experiments: The famous double-slit experiment showed that tiny particles can exist in multiple states at once, which could support the idea of a multiverse.

-Déjà vu and strange phenomena: Some people think that feelings of déjà vu or ghostly encounters could be glimpses of other realities. While this isn’t scientific proof, it’s still a fun idea!

Arguments Against Parallel Universes

-Here are some assumptions that suggest that parallel universes do not exist:

-Lack of direct evidence: So far, we haven’t been able to see or measure parallel universes, making them impossible to confirm.

-Testability issues: For something to be considered scientific, we need to be able to test it. Right now, the idea of a multiverse is more of a theory than a proven fact.

https://scienceandspacenews.com/2025/02/07/are-other-dimensions-real/

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The parallel universe theory where the Big Bang was only one of many similar cases explains things like exotic particles as their source is in some other universe. If we want to make theories about the beginning of space and time we face one thing. The parallel universe theory is only an extension of the Big Bang Theory. If the universe where we live is only one of many universes that doesn’t answer the question of eternal entirety where universes exist and were formed. 

The eternal entirety is the place where the universes form the bubbles or quantum systems where there can be planets but in some universes, there might not be planets or stars. The problem is to prove that theory is in the stars in our universe. Same way as city lights cause light pollution, galaxies, and other objects cause light pollution, if we want to see things outside our universe we must remove all light that covers that very weak radiation that could uncover other universes' existence.

Logically other universes exist like galaxies, and galaxies form local galaxy clusters. Local galaxy clusters form galactic superclusters. So we can say that the universe is the global galaxy cluster that is part of a larger entirety. But then we can ask can we still see everything? The parallel universe is the next logical step to the model that expands all the time. We know many new details about the universe. The multiverse is a simple thing that is hard to prove. But then we can remember. How our worldview increases. 

Before Nicolaus Copernikus people believed that the Earth was the center of the universe. Then Galileo Galilei proved that four moons orbiting Jupiter. After that Hubble proved that the Milky Way is only one of billions of galaxies. Then astronomers found local and superclusters of galaxies. The next thing that astronomers found was the “cosmic web” the largest known megastructure in the universe. And then the new step would be the parallel universe. 

Another universe can exist in our universe, places like black holes. Or it can exist outside our universe. It can form visible or dark matter. And in theory, their time can travel backward. Those universes are things that can be proven in the future. The problem is that the universe covers radiation that comes from other universes if they exist.  The other problem is that we live in a galaxy. Galaxies are ultimately massive objects. They pull dark and visible material around them as halos. 

Those halos form light pollution that the dimmest light cannot pass. The other problem with that thing is that the material between galaxies can be thinner than nobody expected. And if we continue that induction thinking we can think that quantum fields and material between hypothetical multiverse universes is much more thin than nobody even imagined. That means radiation from other universes can be much weaker than we even imagine. 

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https://bigthink.com/starts-with-a-bang/evidence-parallel-universe/

https://phys.org/news/2025-05-bridging-worlds-physicists-holographic-principle.html

https://phys.org/news/2025-06-theory-dimensions-space-secondary-effect.html

https://scitechdaily.com/is-the-universe-a-hologram-schrodingers-100-year-old-equation-still-holds-the-key/

https://scienceandspacenews.com/2025/02/07/are-other-dimensions-real/

https://en.wikipedia.org/wiki/Multiverse

https://en.wikipedia.org/wiki/String_theory

https://en.wikipedia.org/wiki/Wave%E2%80%93particle_duality