A hidden quantum feature of protons is showing strange behavior. Like a black hole?

This could open an entirely new field of study.

A black hole, protons, and quantum entanglement walk into a bar.

According to a recent study published in the European Physical Journal C, the recent revelation that portions of a proton's interior exhibit maximal quantum entanglement — a finding that, paradoxically, could point to another, much larger thermodynamic object: black holes.

While no one is talking about a literal black hole hidden inside a proton (that would be absurd), finding similar physics on such a small scale represents a rare overlap in the way we describe the physical universe, where theories about extremely large things also describe hidden features of unspeakably small things.

Protons, quantum entanglement, and black holes all walk into a pub.

According to the study, many fragments inside protons must be maximally entangled with one another; if this isn't the case, theoretical predictions won't match facts from experiments. The scientists can propose that, contrary to popular belief, the physics going on inside protons may have a lot in common with entropy or temperature using the model presented by the theory.

And when dealing with unusual things like black holes, these processes are amplified.

This research was led by two theorists: Krzysztof Kutak of the Polish Academy of Sciences' Institute of Nuclear Physics (IFJ PAN) in Cracow, Poland, and Martin Hentschinski of Mexico's Universidad de las Americas Puebla.

Together, they tested a scenario in which protons are bombarded with electrons. When a negatively charged electron approaches a positively charged proton, the two will interact, with the latter diverting the former into a different route.

When a photon is exchanged between a proton and an electron, the greater the interaction between the two particles, the higher the change in momentum of the photon, which reduces the time of the electromagnetic wave.

Incorporating entropy into proton physics denotes the existence of black holes

In a Report, Kutak stated, "If a photon is'short' enough to [fit] inside a proton, it begins to'resolve' features of its internal structure." "The proton may decay into particles as a result of colliding with this type of photon. We've demonstrated that the two scenarios are intertwined. The number of particles originating from the unobserved section of the proton is determined by the number of particles seen in the observed part of the proton if the photon observes the interior part of the proton and it decays into a number of particles, say three."

There's a lot more to the research procedure, but scientists have been able to measure the degree of disordered motion among particles in an analysed system thanks to a recent trend among quantum physicists of linking entropy with the internal state of a proton — via a well-known concept of classical thermodynamics. This disorderly state provides systems a high entropy value, whereas order has a low entropy value.

And, according to recent results, this is how things are within the proton, allowing physicists to explain entanglement entropy in that environment. However, many physicists are adamant that protons are pure quantum states in and of themselves, implying that we can't characterise them using entropy. And the new research is a huge step forward in bringing the entanglement concept to the forefront for the proton. This applies to a variety of topics, including the surface area of a black hole. And this marks the start of a new and intriguing sector in desperate need of research.


Hentschinski, M., Kutak, K. Evidence for the maximally entangled low x proton in Deep Inelastic Scattering from H1 data. Eur. Phys. J. C 82, 111 (2022). https://doi.org/10.1140/epjc/s10052-022-10056-y 

A hidden quantum feature of protons is showing strange behavior. Like a black hole? A hidden quantum feature of protons is showing strange behavior. Like a black hole? Reviewed by Explore With Us on August 18, 2022 Rating: 5

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