Lagrangian density

C17865
concept

The Lagrangian density is a function of fields and their derivatives defined over spacetime whose integral (the action) determines the dynamics of a physical system via the principle of least action.

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All labels observed (4)

Label Occurrences
Lagrangian density canonical 1
effective Lagrangian 1
string theory action 1

Description generation (CDg)

The one-sentence description above was generated by prompting gpt-5.1 with the class name and this instruction.

Instruction
generate a one-sentence description for a given conceptual class.
# Response Format
Return only the sentence: "Description: [one-sentence description of the conceptional class]"
Input
Class: Lagrangian density
Generated description
The Lagrangian density is a function of fields and their derivatives defined over spacetime whose integral (the action) determines the dynamics of a physical system via the principle of least action.

Instances (3)

Instance Via concept surface
Dirac Lagrangian —
Polyakov action string theory action
Heisenberg–Euler effective Lagrangian effective Lagrangian