Abstract
The symmetric energy-momentum tensor for the self-interacting fermion theory ${(\overline{\ensuremath{\psi}}\ensuremath{\psi})}^{2}$ is expressed in terms of the collective mode within the Hartree approximation. The divergent part of the energy-momentum tensor for the fermion theory induces an effective energy-momentum tensor for the collective mode, and this effective energy-momentum tensor is structurally equivalent to the Callan-Coleman-Jackiw improved tensor for the Yukawa theory.
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