What is the principle of least action?
42036
Why should an action integral be stationary? On what basis did Hamilton state this principle?
88658
Confusion regarding the principle of least action in Landau & Lifshitz "The Classical Theory of Fields"
91516
Procedure for reducing the degrees of freedom of an arbitrary system
101888
Least action principle : is $ \delta \frac{dx}{dt} = \frac{d \delta x}{dt} $ always true?
157321
Why does the action have to be hermitian?
135471
In wave motion of a string both kinetic energy and potential energy are minimum at $y=y_\text{max}$ then why does the string come down again?
38538
Euler's equations of rigid body motion from least action principle
42272
What sets a "Law" apart from a "Rule" or a "Principle"?
153050
Variation of Action with time coordinate variations
48930
Least-action classical electrodynamics without potentials
44650
Several stationary points of the action functional
39288
Is there such a thing as "Action at a distance"?
117420
Normal reaction - force without acceleration
106538
Why are thermodynamic potentials minimised?
141128
Action of a massive free point-particle in relativistic mechanics
72721
Do an action and its Euler-Lagrange equations have the same symmetries?
5205
"Less" vs. "fewer"