Simple calculation on coordinate transformation of Lagrangian (Qualls' CFT lecture note)
138908
Most general Lagrangian in CFT in 0+1D
983
Use partial or covariant derivatives when deriving equations of a field theory?
155913
Lagrangian for free particle in special relativity
63402
Euler-Lagrange equation in curved spacetime: how to calculate $\partial \mathcal{L}/\partial(\nabla_\nu A_\mu)$?
105572
Independent Variables of a Lagrangian
87877
Angular Momentum Conservation in Gravitational Interaction
21917
Mathematical Prerequisites for QFT
112073
What does a Lagrangian of the form $L=m^2\dot x^4 +U(x)\dot x^2 -W(x)$ represent?
130830
Counting degrees of freedom for gravitational waves as a gauge field
82135
Lagrangian to Hamiltonian in Quantum Field Theory
150830
Path integral measure in Coleman's "Aspects of symmetry"
94173
Deriving the Lagrangian for a free particle
137569
Generalising a Dirac Delta function formula in General Relativity
58445
What does the Canonical Commutation Relation (CCR) tell me about the overlap between Position and Momentum bases?
13644
Is the change in the Lagrangian always a total derivative for symmetry transformations of the action?
112216
Geometric description of canonical commutation relation
116314
On-shell and off-shell transformations in Noether's theorem