Why is the minimum energy equal to the energy uncertainty?

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SUMMARY

The discussion centers on the relationship between minimum energy and energy uncertainty, specifically referencing the inequality ΔE≥½hf. Participants clarify that the minimum energy of a quantum state, denoted as E0, is equal to ½hf, which is derived from the principle that the energy of any state must be greater than or equal to this value. The confusion arises from interpreting the inequality as a direct equivalence rather than a boundary condition for energy states.

PREREQUISITES
  • Quantum mechanics fundamentals
  • Understanding of energy uncertainty principle
  • Familiarity with Planck's constant (h)
  • Basic knowledge of quantum states and ground state energy
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  • Study the energy uncertainty principle in quantum mechanics
  • Explore the implications of Planck's constant in quantum physics
  • Learn about ground state energy and its significance in quantum systems
  • Investigate quantum state energy levels and their calculations
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Students of quantum mechanics, physicists, and educators seeking to clarify concepts related to energy states and uncertainty in quantum systems.

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TL;DR
Why is the minimum energy equal to the energy uncertainty?
I was watching this video on Youtube, however, I don't get the step at 14:50 where he says that ΔE≥½hf means that E0=½hf.

Could someone explain why the minimum energy is equal to the energy uncertainty?

 
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"Watch this obviously confusing video and then explain it to me" is a big, big ask.
asdf said:
Could someone explain why the minimum energy is equal to the energy uncertainty?
It's not.
 
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Amended: "Watch this obviously confusing 37 minute video..."
 
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asdf said:
I don't get the step at 14:50 where he says that ΔE≥½hf means that E0=½hf.
It's just saying that, since the energy of any state whatever must be greater than or equal to ##hf / 2##, the energy of the lowest energy state, the ground state energy ##E_0##, is equal to ##hf / 2##.

asdf said:
Could someone explain why the minimum energy is equal to the energy uncertainty?
That's not what the above is saying.
 
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