KnowraMomentum operatorLinked fromLinked fromThe 6 pages that link to Momentum operator, each with the reason it gives.All 6Broader topic 2Related 2Compared with 2ObservableBroader topic: Its relation to position illustrates how observables encode measurable quantities and incompatibility.Canonical commutation relationRelated: In the position representation, it acts as −iℏ times spatial differentiation.Hamiltonian operatorCompared with: It is a distinct observable that often appears inside kinetic terms of the Hamiltonian.Position operatorCompared with: Unlike position’s multiplication action, momentum differentiates the position-space wavefunction.Hellinger–Toeplitz theoremBroader topic: Its unbounded realizations illustrate why physically useful symmetric operators are often not defined everywhere.Position and momentum spacesRelated: In position space, its action involves a spatial derivative; in momentum space, it acts by multiplication.