Why usually we don't have a linear term in the potential?
100985
Effect of linear terms on a QFT
154580
Is indefinite integration non-linear?
68896
Why should a solution to the wave equation be finite?
22040
Why is there no theta-angle (topological term) for the weak interactions?
106538
Why are thermodynamic potentials minimised?
32697
How can you solve this "paradox"? Central potential
88149
Is calling a linear-equation a linear-function, misnomer or completely wrong?
126303
Are there linear operators and vector spaces in classical physics?
23128
Why aren't logarithms defined for negative $x$?
116881
Why is a linear transformation called linear?
36380
Why not use the Lagrangian, instead of the Hamiltonian, in nonrelativistic QM?
15378
Why a holomorphic function satisfying these conditions has to be linear?
51817
Linear vs nonlinear differential equation
101856
Why does the electric field of an infinite line depend on the distance, but not on an infinite plane?
45559
Why we use $L_2$ Space In QM?
43141
Why is the relationship between atomic number and density not linear?
10366
Why do we not include $c$ in the computation of the definite integral?