Primary Papers Index

This index identifies original and near-original papers that anchor historical claims in quantum mechanics. It is not a replacement for Classic Papers, which is the broader bibliography guide. This page is a routing table: when a historical page says “this was first argued, measured, or formulated here,” this index helps locate the source and the appropriate modern reading.

Primary papers should be used with care. They establish what was claimed in a historical setting; they do not automatically provide the cleanest modern notation or the final interpretation.

How to Use This Index

For each source, ask:

• What claim does this paper actually support?
• Which modern concept is a later reconstruction?
• Which page owns the present-day formalism?
• Which historical caution prevents a misleading slogan?

Use primary papers for dates, original arguments, apparatus reports, and historical interpretation. Use modern pages for standard calculations.

Early Quantum Theory

Source	Anchors	Read with	Historical caution
Planck, 1901, blackbody radiation	Radiation law and energy elements in thermal equilibrium	Planck’s Radiation Law	Do not turn this alone into the modern photon concept.
Einstein, 1905, light quanta	Frequency-dependent energy transfer and photoelectric reasoning	Einstein’s Light Quantum Hypothesis	The paper is stronger than Planck’s oscillator quantization but still predates mature quantum electrodynamics.
Millikan, 1916, photoelectric measurements	Precision tests of stopping potential versus frequency	Millikan’s Photoelectric Measurements	The data supported Einstein’s relation even while Millikan resisted the light-quantum interpretation.
Rutherford, 1911, nuclear atom	Large-angle alpha scattering and concentrated positive charge	Rutherford Scattering	The nuclear atom is not yet a quantum atom.
Bohr, 1913, atomic constitution	Old quantum theory explanation of hydrogen spectral regularities	Bohr Model	Bohr orbits are not modern stationary states.
Franck and Hertz, 1914, inelastic collisions	Discrete atomic excitation energies	Franck–Hertz Experiment	The experiment supports discrete internal energies, not the full postulate package by itself.

Matter Waves, Matrices, and Wave Mechanics

Source	Anchors	Read with	Historical caution
de Broglie, 1924-1925, matter waves	Wavelength-momentum relation for material particles	de Broglie Matter Waves	Matter-wave reasoning was tied to old quantum theory before the full state-vector framework.
Heisenberg, 1925, reinterpretation paper	Transition quantities and noncommuting structure	Heisenberg’s Matrix Mechanics	The paper is not written as a modern linear-algebra textbook.
Born and Jordan, 1925, matrix formulation	Matrix mechanics and canonical commutation structure	Born and Jordan’s Matrix Formulation	Modern operator notation is a reconstruction of a rapidly developing formalism.
Dirac, 1925-1926, transformation theory	Algebraic transformation viewpoint and quantum brackets	Dirac’s Transformation Theory	Bra-ket notation was consolidated later; do not impose the later notation too early.
Schrödinger, 1926, eigenvalue papers	Wave mechanics and bound-state eigenvalue methods	Schrödinger’s Wave Mechanics	Wave mechanics is not a classical material wave theory.
Born, 1926, collision paper	Probability interpretation of wave amplitudes	Born Rule History	The general Born rule is the later canonical formulation, not the wording of the first scattering paper.
Davisson and Germer, 1927, electron diffraction	Reflection diffraction evidence for electron waves	Davisson–Germer Experiment	Diffraction supports matter-wave behavior; it does not make electrons classical waves.
G. P. Thomson and Reid, 1927, electron diffraction	Transmission diffraction evidence for electron waves	G. P. Thomson Experiment	The geometry differs from Davisson–Germer and should not be collapsed into one generic story.

Spin, Statistics, and Measurement

Source	Anchors	Read with	Historical caution
Gerlach and Stern, 1922, atomic beam splitting	Directional quantization evidence	Stern–Gerlach Experiment	The original experiment predates the clean modern electron-spin account.
Pauli, 1925, exclusion principle	Nonclassical exclusion rule for atomic structure	Pauli Exclusion Principle	Exclusion was identified before the later spin-statistics theorem framework.
Bose, 1924, photon counting	Counting argument leading to Bose statistics	Bose’s Counting Argument	The argument was historically entangled with radiation theory and Einstein’s extension to material gases.
Fermi and Dirac, 1926, statistics	Fermionic occupation and antisymmetric-state reasoning	Fermi–Dirac Statistics	Do not read full many-body Fock-space notation into the first papers without translation.
Heisenberg, 1927, uncertainty	Measurement limits and noncommuting quantities	Uncertainty Historical Origin	Modern uncertainty relations are sharper operator statements than the first microscope-style arguments.
von Neumann, 1932, measurement formalism	Projection, Hilbert-space formalism, and measurement idealization	Measurement in the Formalism	The formal measurement model does not settle every interpretation of measurement.

Foundations and Bell Tests

Source	Anchors	Read with	Historical caution
Einstein, Podolsky, and Rosen, 1935	Completeness, locality assumptions, and correlated systems	EPR Argument	EPR is not simply “entanglement is weird”; it is an argument from specific assumptions.
Schrödinger, 1935, separated systems and cat	Entanglement language and macroscopic-superposition concerns	Schrödinger’s Cat	The cat argument is a measurement problem probe, not a laboratory recipe.
Bell, 1964	Inequalities for local hidden-variable theories	Bell Theorem Historical Turning Point and Bell Theorem	Bell’s theorem targets precise assumptions; state them before drawing conclusions.
Clauser, Horne, Shimony, and Holt, 1969	Experimentally usable Bell inequality	CHSH Inequality	The inequality and the experiment are different layers of the argument.
Freedman and Clauser, 1972	Early optical Bell-test experiment	Bell Inequality Experiments	Early tests had loopholes that later experiments addressed.
Aspect, Grangier, Roger, and related 1982 papers	Landmark polarization-correlation Bell tests	Aspect Experiments	Aspect-era tests are historically central but not the same as later loophole-free tests.
Hensen, Giustina, Shalm, and related 2015 tests	Loophole-free Bell-test era	Loophole-Free Bell Tests	“Loophole-free” means major experimental loopholes are closed under stated assumptions.

Citation Pattern

When a page uses one of these papers, cite it with a sentence that says why it is being cited:

This paper is cited for the original experimental report, not for modern notation.

or

This paper is cited for the historical introduction of the argument; the formal theorem is stated on the modern theorem page.

Do not cite a famous paper merely because it is famous. A citation should support a specific historical, experimental, or conceptual claim.

Cross-Links

• Primary Sources Guide
• Master Timeline
• Timeline by Decade
• Experiment Index
• Classic Papers
• Citation Standards

References

• M. Planck, “Ueber das Gesetz der Energieverteilung im Normalspectrum,” Annalen der Physik 4, 553-563, 1901, DOI: 10.1002/andp.19013090310.
• A. Einstein, “Über einen die Erzeugung und Verwandlung des Lichtes betreffenden heuristischen Gesichtspunkt,” Annalen der Physik 17, 132-148, 1905, DOI: 10.1002/andp.19053220607.
• E. Rutherford, “The Scattering of $\alpha$ and $\beta$ Particles by Matter and the Structure of the Atom,” Philosophical Magazine 21, 669-688, 1911, DOI: 10.1080/14786440508637080.
• N. Bohr, “On the Constitution of Atoms and Molecules,” Philosophical Magazine 26, 1-25, 1913, DOI: 10.1080/14786441308634955.
• W. Heisenberg, “Über quantentheoretische Umdeutung kinematischer und mechanischer Beziehungen,” Zeitschrift für Physik 33, 879-893, 1925, DOI: 10.1007/BF01328377.
• M. Born and P. Jordan, “Zur Quantenmechanik,” Zeitschrift für Physik 34, 858-888, 1925, DOI: 10.1007/BF01328531.
• E. Schrödinger, “Quantisierung als Eigenwertproblem,” Annalen der Physik 79, 361-376, 1926, DOI: 10.1002/andp.19263840404.
• M. Born, “Zur Quantenmechanik der Stoßvorgänge,” Zeitschrift für Physik 37, 863-867, 1926, DOI: 10.1007/BF01397477.
• C. Davisson and L. H. Germer, “Reflection of Electrons by a Crystal of Nickel,” Physical Review 30, 705-740, 1927, DOI: 10.1103/PhysRev.30.705.
• A. Einstein, B. Podolsky, and N. Rosen, “Can Quantum-Mechanical Description of Physical Reality Be Considered Complete?,” Physical Review 47, 777-780, 1935, DOI: 10.1103/PhysRev.47.777.
• J. S. Bell, “On the Einstein Podolsky Rosen Paradox,” Physics Physique Fizika 1, 195-200, 1964, DOI: 10.1103/PhysicsPhysiqueFizika.1.195.
• J. F. Clauser, M. A. Horne, A. Shimony, and R. A. Holt, “Proposed Experiment to Test Local Hidden-Variable Theories,” Physical Review Letters 23, 880-884, 1969, DOI: 10.1103/PhysRevLett.23.880.
• A. Aspect, J. Dalibard, and G. Roger, “Experimental Test of Bell’s Inequalities Using Time-Varying Analyzers,” Physical Review Letters 49, 1804-1807, 1982, DOI: 10.1103/PhysRevLett.49.1804.
• M. Jammer, The Conceptual Development of Quantum Mechanics, 2nd ed., American Institute of Physics, 1989.
• J. Mehra and H. Rechenberg, The Historical Development of Quantum Theory, Springer, 1982-2001.

Exercises

1. A page says “Planck discovered photons.” Which primary-source distinction should correct it?

Solution

Planck’s blackbody work introduced energy elements in the radiation problem, while Einstein’s 1905 paper made the stronger light-quantum argument. The mature photon concept developed later. The correction should cite Planck for the radiation law and Einstein for the light-quantum hypothesis, while avoiding the anachronistic photon claim.

2. Why should Bell’s 1964 paper and CHSH 1969 be indexed separately?

Solution

Bell’s 1964 paper gives the foundational theorem for local hidden-variable constraints. CHSH gives an experimentally useful inequality for correlation tests. They serve different roles: theorem anchor and experiment-facing formulation.