How can a Lagrangian determine how its fields transform?
120474
Does the lagrangian contain all the information about the representations of the fields in QFT?
11358
Eigenvalues of the Lagrangian?
101944
Fundamental invariants of the electromagnetic field
34974
How do we know that the motion of the particle in an central force field lies on a plane?
68813
Geodesic Equation from variation: Is the squared lagrangian equivalent?
17451
Expanding electromagnetic field Lagrangian in terms of gauge field
28946
Derivation of Spin Lagrangian
66939
Picturing the how the covariant derivative acts on vector fields
68906
Do the same equations of motion imply the same Lagrangians?
18054
Is there a proof from the first principle that the Lagrangian L = T - V?
34788
Lagrangian for relativistic massless point particle
3603
Lagrangian and Hamiltonian EOM with dissipative force
12924
How to derive Maxwell's equations from the electromagnetic Lagrangian?
144838
How to know whether Lagrange multipliers gives maximum or minimum?
77204
Least squares invariant under transformation?
57051
Why does Quantum Field Theory use Lagrangians rather than Hamiltonians?
126388
Derivation of Lorentz Transformations