# Reduced Planck Constant vs Dark Matter?

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• jwb44
In summary, the Reduced Planck Constant represents the minimum spin that matter can have to exist. If matter were to spin lower than this constant, it would cease to exist. It is debated whether matter falling below this constant would be classified as Dark Matter. The Higgs boson and axion are believed to have a spin of 0, but it is not confirmed. The lowest energy state possible for a particle to exist is its mass. It is not theoretically possible to reduce the spin of fermions to 0, and the result is uncertain. Planck's constant does not represent an energy state.
jwb44
TL;DR Summary
Is the Reduced Planck Constant the minimum frequently/movement/spin matter can have to exist?
Is the Reduced Planck Constant the minimum frequently/movement/spin matter can have to exist?

So if a matter were to spin lower than 1.054 571 817... x 10-34 J s, it when cease to exist?
Or would matter falling below the Reduced Planck Constant by classified as Dark Matter?
I heard that Higgs boson and axion have 0 spin. But are we sure that the Higgs boson and axion have 0 spin? that would mean 1.054 571 817... x 10-34 J s x 0 = 0. How could they exist with an energy state lower 1.054 571 817... x 10-34 J s? And what would be the lowest energy state possible for a particle to exist? And is it theoretically possible to reduce the 1/2 spin of fermions to 0 spin? what would happen?

No.
No,
No.
No.
Yes.
See above.
Its mass.
No
See above.

vanhees71, etotheipi and berkeman
The response by @Vanadium 50 appears to cover it. The only note I would add is that Planck's constant does not represent an "energy state"; its units aren't units of energy.

## 1. What is the Reduced Planck Constant?

The Reduced Planck Constant, denoted as ħ (pronounced "h-bar"), is a fundamental constant in quantum mechanics that relates the energy of a system to its frequency. It is equal to the Planck Constant (h) divided by 2π.

## 2. What is Dark Matter?

Dark Matter is a hypothetical form of matter that is believed to make up about 85% of the total matter in the universe. It does not interact with light, making it invisible, but its presence is inferred through its gravitational effects on visible matter.

## 3. How are the Reduced Planck Constant and Dark Matter related?

The Reduced Planck Constant is not directly related to Dark Matter. However, the concept of Dark Matter is important in understanding the behavior of subatomic particles, which are described by quantum mechanics and the Reduced Planck Constant.

## 4. Can the Reduced Planck Constant help explain Dark Matter?

No, the Reduced Planck Constant alone cannot explain Dark Matter. While it is a fundamental constant in quantum mechanics, it does not directly relate to the properties or behavior of Dark Matter. Scientists are still working to understand the nature of Dark Matter and its potential explanations.

## 5. How does the Reduced Planck Constant affect our understanding of Dark Matter?

While the Reduced Planck Constant does not directly impact our understanding of Dark Matter, it is a crucial component in the mathematical equations used to describe the behavior of subatomic particles. This understanding of quantum mechanics is essential in studying and potentially explaining the behavior of Dark Matter.

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