  Noether's first and second theorems both imply conserved currents that can be
identified as an energy-momentum tensor (EMT). The first theorem identifies the
EMT as the conserved current associated with global spacetime translations,
while the second theorem identifies it as a conserved current associated with
local spacetime translations. This work obtains an EMT for quantum
electrodynamics and quantum chromodynamics through the second theorem, which is
automatically symmetric in its indices and invariant under the expected
symmetries (e.g., BRST invariance) without the need for introducing an ad hoc
improvement procedure.
