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Problems by Level

Levels describe assumed independence, not intellectual value. A graduate calculation can fail because of a first-course normalization convention, so use the lowest level that diagnoses the real obstacle.

Level Route Expected Output
Orientation Self-Diagnostic Quiz and Diagnostic Problems identify missing prerequisites
Undergraduate Undergraduate Problem Map solve standard formalism and wave-mechanics problems with checks
Advanced undergraduate Exercise Sets and Tensor Product Exercises combine exact models, spin, approximation, and composite systems
Graduate bridge Graduate Problem Map state assumptions, domains, degeneracies, and approximation limits
Quantum information bridge Quantum Information Problem Map use density matrices, channels, and entanglement measures
QFT bridge QFT Bridge Problem Map connect oscillator, Fock-space, path-integral, and scattering language
Computational Benchmark Problems and Numerical Benchmark Problems convergence evidence and benchmark pass criteria

Move up a level when you can do the following without copying a template:

  • state the Hilbert space and basis;
  • identify the Hamiltonian and observable;
  • normalize or explain the normalization convention;
  • compute probabilities or expectation values;
  • check dimensions and limits;
  • explain whether the result is exact, approximate, numerical, or conceptual.
Status Use
unsolved_exercise Practice without assistance
hint_available Use when stuck on setup
short_solution_available Check the result without full derivation
full_solution_available Study after a serious attempt
notebook_available Reproduce and vary parameters
challenge_problem Expect synthesis across pages
research_style_problem Expect assumptions and scope to matter more than a closed-form answer
  • D. J. Griffiths and D. F. Schroeter, Introduction to Quantum Mechanics, 3rd ed., Cambridge University Press, 2018.
  • R. Shankar, Principles of Quantum Mechanics, 2nd ed., Springer, 1994.
  • J. J. Sakurai and J. Napolitano, Modern Quantum Mechanics, 3rd ed., Cambridge University Press, 2020.