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Quantum mechanics

AdS/CFT correspondence
Duality between theories of gravity on anti-de Sitter space and conformal field theories
Angular momentum operator
Quantum mechanical operator related to rotational symmetry
Born rule
Calculation rule in quantum mechanics
Bound state
System where a particle is subject to a potential such that the particle has a tendency to remain localised in one or more regions of space
Bra–ket notation
Notation for quantum states
Casimir effect
Force resulting from the quantisation of a field
Compton wavelength
Quantum mechanical property of particles
Conformal field theory
Quantum field theory enjoying conformal symmetry
Copenhagen interpretation
Probabilistic interpretation of quantum mechanics involving wavefunction collapse
Correspondence principle
Physics principle that quantum theories reproduce classical physics in the limit of large quantum numbers, formulated by Niels Bohr in 1920
Davisson–Germer experiment
Experiment
Delta potential
Model of an energy potential in quantum mechanics
Dirac equation
Relativistic quantum mechanical wave equation
Double-slit experiment
Physics experiment
Ehrenfest theorem
Theorem that the time evolution of the expectation value of a quantum observable is proportional to that of the commutator between the observable and the Hamiltonian (plus that of any explicit time dependence of the operator, if any)
Electron diffraction
Bending of electron beams due to electrostatic interactions with matter
Excited state
Quantum states with more energy than the lowest possible amount
Expectation value (quantum mechanics)
Expected value of a quantum measurement
Finite potential well
Quantum mechanics concept
g-factor (physics)
Relation between observed magnetic moment of a particle and the related unit of magnetic moment
Ground state
Lowest energy state of quantum-mechanical system
Gyromagnetic ratio
Ratio of magnetic moment to angular momentum
Hamiltonian (quantum mechanics)
Quantum operator for the sum of energies of a system
Interpretations of quantum mechanics
Set of statements which attempt to explain how quantum mechanics informs our understanding of nature
Introduction to quantum mechanics
Non-technical introduction to quantum physics
Many-worlds interpretation
Interpretation of quantum mechanics which denies the collapse of the wavefunction
Mathematical formulation of quantum mechanics
Mathematical structures that allow quantum mechanics to be explained
Matter wave
Aspect of wave–particle duality
Measurement in quantum mechanics
Interaction of a quantum system with a classical observer
Measurement problem
In quantum mechanics, the problem of how or whether wave function collapse occurs during measurement
Momentum operator
Operator in quantum mechanics
Observable
In physics, a dynamic variable that can be measured
Operator (physics)
Function acting on the space of physical states in physics
Parity (physics)
Symmetry of physical systems under mirror reflections.
Particle in a box
Physical model in quantum mechanics which is analytically solvable
Path integral formulation
Formal sum or integral over all histories of a quantum system
Pauli exclusion principle
Quantum mechanics principle
Perturbation theory
Mathematical methods used to find an approximate solution to a problem which cannot be solved exactly
Planck postulate
Principle of quantum physics
Position and momentum spaces
Physical spaces representing position and momentum, Fourier transform duals
Position operator
Operator in quantum mechanics
Probability amplitude
Complex number whose squared absolute value is a probability
Quantization (physics)
Procedure to construct a quantum system whose classical limit corresponds to a given classical system
Quantum
Aspect of physics
Quantum chromodynamics
Theory of the strong nuclear interactions
Quantum electrodynamics
Relativistic quantum field theory of electromagnetism
Quantum entanglement
Correlation between measurements of quantum subsystems, even when spatially separated
Quantum field theory
Theoretical framework combining classical field theory, special relativity, and quantum mechanics
Quantum fluctuation
Random change in the energy inside a (typically sub-microscopic) volume
Quantum foam
Fluctuation of spacetime on very small scales
Quantum gravity
Field of theoretical physics
Quantum harmonic oscillator
Important, well-understood quantum mechanical model
Quantum indeterminacy
The apparent lack of definite state before measurement of quantum systems
Quantum mechanics
Description of physical properties at the atomic and subatomic scale
Quantum number
Notation for conserved quantities in physics and chemistry
Quantum potential
Quantum mechanical statistic
Quantum state
Mathematical entity to describe the probability of each possible measurement on a system
Quantum superposition
Principle of quantum mechanics
Quantum tunnelling
Quantum mechanical phenomenon
Relativistic quantum mechanics
Quantum mechanics taking into account particles near or at the speed of light
Schrödinger equation
Linear partial differential equation whose solution describes the quantum-mechanical system.
Schrödinger's cat
Thought experiment devised by the physicist Erwin Schrödinger
Stationary state
In quantum mechanics
Stern–Gerlach experiment
Physical experiment that demonstrated the quantization of angular momentum
Symmetry in quantum mechanics
Properties underlying modern physics
Uncertainty principle
Foundational principle in quantum physics
Wave function
Mathematical description of the quantum state of a system
Wave function collapse
Process by which a quantum system takes on a definitive state
Wave–particle duality
Concept in quantum mechanics
WKB approximation
Solution method for linear differential equations
Zero-point energy
Lowest possible energy of a quantum system or field