Is energy frame Invariant?
45625
Is energy content of a system different depending on the observer?
72721
Do an action and its Euler-Lagrange equations have the same symmetries?
120529
Relations between diffeomorphism symmetry theories and invariant $SU(N), N \rightarrow \infty$ theories
5800
What determines which frames are inertial frames?
69199
How to find the continuous transformations which leave the action invariant?
98303
Ward identity derived from global symmetry and SDE, different from that derived from gauge symmetry?
70880
Invariance of canonical Hamiltonian equation when adding the total time derivative of a function of $q_i$ and $t$ to the Lagrangian
98846
Why is Kinetic Energy = (-) Total Energy and Potential Energy = 2 $\times$ Total Energy?
29928
Is kinetic energy a relative quantity? Will it make inconsistent equations when applying it to the conservation of energy equations?
152446
Noether's Theorem and scale invariance
131167
Kinetic energy of the object, but Potential energy of the system: Why is it so?
135071
Energy momentum tensor from Noether's theorem
52843
framed equations
80596
Ambiguities in the energy-momentum tensor
28057
Deriving $p = mv$ from translational symmetry (momentum conservation law)?
54537
Special Relativity - Reference Frames $S$ and $S'$
155640
Why is the laboratory frame energy always greater than the center of mass frame energy?