The difference in form of the term and counter-term in the renormalized Lagrangian
56614
Why do the counterterms in renormalized $\phi^4$-theory with power two in fields give vertices and not propagators?
983
Use partial or covariant derivatives when deriving equations of a field theory?
138908
Most general Lagrangian in CFT in 0+1D
27016
Is the Lagrangian density a functional or a function?
7555
Why do we consider Lagrangian densities in field theory (as opposed to Lagrangians as in point mechanics)?
79094
Perturbation expansion with path integrals
104320
Why should the Standard Model be renormalizable?
112073
What does a Lagrangian of the form $L=m^2\dot x^4 +U(x)\dot x^2 -W(x)$ represent?
100985
Effect of linear terms on a QFT
4421
Proof that total derivative is the only function that can be added to Lagrangian without changing the EOM
114672
Why do we use the Lagrangian and Hamiltonian instead of other related functions?
148206
In what sense is the renormalization group equation a group?
17414
Lagrangian of an effective potential
410
QM and Renormalization (layman)
85
Difference between $\Delta$, $d$ and $\delta$
28946
Derivation of Spin Lagrangian
68906
Do the same equations of motion imply the same Lagrangians?