Test Your Skills
Review Questions
Why does the reduced Planck constant use 2 π?
2 π denotes the radius of the atom.
2 π is 360 degrees in radians.
2 π accounts for quantum fluctuations.
2 π is a derivative of Einstein’s universal constant.
In quantum mechanics, what does the Greek letter psi represent?
The Hamiltonian
The reduced Planck constant
The wave function
Superposition of states
What would be most helpful in determining the probability of finding a particle at a given point?
Born’s rule
Hamiltonian
Reduced Planck constant
Wave function
Which of the following is the most accurate description of the wave function collapse?
The various possible quantum states coalesce into a single quantum state.
The probabilities coalesce to a single actuality based on an observer.
The bra-ket 〈φi|φj 〉 forms an orthonormal eigenvector basis.
The superposition of possible eigenstates collapses to a single eigenstate based on interaction with the environment.
When using the Kronecker delta and inputting two eigenstates that are the same, what will be the output?
The sum of the eigenstates
1
The superposition of the eigenstates
0
Schrödinger’s equation is used to describe what?
Superposition of eigenstates
Eigenstates
The wave function
The Hamiltonian operator
What equation is most closely related to the decoupling that occurs during decoherence?
Hamiltonian
Schrödinger equation
Wigner function
Klein-Gordon
Which of the following is a wave function related to quantum electrodynamics that describes the motion for the field as it varies in time and space?
Hamiltonian
Schrödinger equation
Wigner function
Klein-Gordon
What is a bispinor?
A 4 × 4 matrix with complex components
Superposition of two eigenstates
The product of the Dirac equation
The product of the Wigner function