Physical meaning of the Lagrangian function
24896
The meaning of action
99312
Why Lagrangian is negative number for a relativistic massive point particle?
129289
What is the origin of the factor of $-1/4$ in the Maxwell Lagrangian?
82135
Lagrangian to Hamiltonian in Quantum Field Theory
4421
Proof that total derivative is the only function that can be added to Lagrangian without changing the EOM
152446
Noether's Theorem and scale invariance
38299
Why do Lagrange Multipliers work?
107478
Equation of motion of a free particle
37934
What is the physical meaning of the connection and the curvature tensor?
145186
In Newtonian pressure, what type of function is force?
58605
Landau's derivation of a free particle's kinetic energy- expansion of a function?
45061
Physical interpretation of $Q^i = \partial _\nu T^{i \nu}$
10785
Form of the Classical EM Lagrangian
131016
Question about Klein-Gordon field Lagrangian
4989
Why are there only derivatives to the first order in the Lagrangian?
120474
Does the lagrangian contain all the information about the representations of the fields in QFT?
11358
Eigenvalues of the Lagrangian?