Quantum Mechanics

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[edit] Qualifier-type questions

Quantum Harmonic Oscillator from first Principles

Derive the constants for a harmonic osciallator from first principles starting with the given trial wavefunction

Time-evolution of a finite space wavefunction

Given a Hamiltonian in matrix form and an inital condition, solve for the time evolution of the state vector

Basis functions in an infinite square well

Given an inital wavefunction in an infinite square well, convert it to the standard basis functions

Time-Independent Perturbation of a Wavefunction

A perturbation is applied to a wavefunction, what are first and second order corrections to the energy?

QM Particle in a Magnetic field

Consider a spinless QM particle in magnetic field \vec B = B_0 \hat z with a symmetric gauge in a scalar potential. What is the Hamiltonian?

Spin-coupling problem

A particle in a central potential has an orbital angular momentum l = 2\hbar and a spin s = 1\hbar. Find the energy
levels and degeneracies associated with a spin-orbit interaction term H_i = AL \cdot S.

Ping-pong

A Ping pong in Hong Kong is bounced while in its ground state. So what?

Uniform E field

A particle in a uniform electrostatic E field, how classical is it?

[edit] Other

Famous Quantum Experiments

Name some of the famous experiments in quantum mechanics and a brief description of their importance

Gre-quantum

A small collection of GRE problems/solutions



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