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Eugeniu Plamadeala edited untitled.tex
about 9 years ago
Commit id: f9204464ad27a78a4efa005040cadce46a42dfdd
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{\bf Current operators.}
We agree that $\rho_e = \rho_R + \rho_L = e \sum_I
\left( \psi^\dagger_{R,I} \psi_{R,I} + \psi^\dagger_{L,I}
\psi_{L,I}$. \psi_{L,I} \right)$.
Then the continuity equation implies
$$ j_e(x) = \frac{e}{\pi} \sum_{I=1}^N \sum_{J=1}^{2N} \left[ V_{I,J} + V_{N+I,J} \right] \eta_{JJ} \partial_x \phi_J(x) $$