Quantum Mechanics Operators question

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SUMMARY

The discussion centers on the operator Q and its commutation relation with the Hamiltonian operator H, specifically [Q, H] = EoQ, where Eo represents a constant energy value. It is established that if ψ(x) is a solution to the time-independent Schrödinger equation with energy E, then Qψ(x) is also a solution, and the corresponding energy for Qψ(x) is E + Eo. The participants emphasize the importance of using commutator properties to derive the relationship between Qψ and the Hamiltonian.

PREREQUISITES
  • Understanding of quantum mechanics, specifically the time-independent Schrödinger equation.
  • Familiarity with operator algebra and commutation relations in quantum mechanics.
  • Knowledge of the Hamiltonian operator and its role in quantum systems.
  • Basic concepts of wave functions and their solutions in quantum mechanics.
NEXT STEPS
  • Study the properties of commutators in quantum mechanics, focusing on their implications for operator relationships.
  • Explore the derivation of energy eigenvalues in quantum systems using the time-independent Schrödinger equation.
  • Learn about the role of symmetry operators in quantum mechanics and their effects on wave functions.
  • Investigate the physical significance of the constant Eo in the context of quantum operators and energy levels.
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This discussion is beneficial for physics students, quantum mechanics researchers, and anyone interested in the mathematical foundations of quantum theory and operator methods.

zheng89120
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Homework Statement



The operator Q obeys the commutation relation [Q, H] = EoQ, where Eo is a constant with units of energy. Show that if ψ(x) is a solution of the time-independent Schrödinger equation with energy E, then Qψ(x) is also a solution of the time-independent Schrödinger equation, and determine the energy corresponding to Qψ(x).

Homework Equations



Commutator calculation and properties

? Time-independent Schrödinger equation and solution

The Attempt at a Solution



QH-HQ = EoQ

Q = (QH-HQ)/Eo

Qψ = QC1eiA1/2x+QC2e-iA1/2x
 
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Your approach seems a little strange. ψ satisfies Hψ = Eψ (the time independent Schrödinger equation). Then write an expression for H(Qψ) by using the commutator you are given and the fact that Hψ = Eψ.
 

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