High School Reduced Planck Constant vs Dark Matter?

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The discussion centers on the implications of the Reduced Planck Constant in relation to the existence of matter and dark matter. It questions whether matter can exist with spin lower than the Reduced Planck Constant, suggesting that such matter might be classified as dark matter. The conversation also touches on the spin characteristics of the Higgs boson and axion, debating their existence at energy states below the Reduced Planck Constant. Participants clarify that Planck's constant does not denote an energy state, emphasizing its distinct units. The thread concludes with a consensus that the Reduced Planck Constant does not define a minimum energy state for particle existence.
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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?
 
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No.
No,
No.
No.
Yes.
See above.
Its mass.
No
See above.
 
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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.

Thread closed.
 
Time reversal invariant Hamiltonians must satisfy ##[H,\Theta]=0## where ##\Theta## is time reversal operator. However, in some texts (for example see Many-body Quantum Theory in Condensed Matter Physics an introduction, HENRIK BRUUS and KARSTEN FLENSBERG, Corrected version: 14 January 2016, section 7.1.4) the time reversal invariant condition is introduced as ##H=H^*##. How these two conditions are identical?

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