charge

Generalization of electric charge (EM) adding color charge (QCD), mass-energy (gravitation), etc.; sometimes considered same as its charge quantum number

EntityQ73792

Also known as charge (theoretical physics) · physical charge (general) · generalized charge · charge (physics) · abstract charge · charge quantum number

Subclass of: physical property
, invariant
, quantum number

Overview

From Wikipedia, the free encyclopedia · Read full article · Text CC BY-SA 4.0

In physics, a charge is any of many different quantities, such as the electric charge in electromagnetism or the color charge in quantum chromodynamics. Charges correspond to the time-invariant generators of a symmetry group, and specifically, to the generators that commute with the Hamiltonian. Charges are often denoted by ⁠⁠, and so the invariance of the charge corresponds to the vanishing commutator ⁠⁠, where is the Hamiltonian. Thus, charges are associated with conserved quantum numbers; these are the eigenvalues of the generator . A "charge" can also refer to a point-shaped object with an electric charge and a position, such as in the method of image charges.

Overview

All data

7 statements · 29% with external sources · numbers in brackets are citations

Named after: Emmy Noether applies to name of subject: carga de Noether, carga de Noether

On other databases

4 identifiers linking charge across the web's reference databases

Data quality

statements

29%

externally sourced

Source last edited February 23, 2026. AIDb refreshes this page daily.

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AIDb. (2026). charge (Q73792). Retrieved from https://aidb.si/e/charge-Q73792