Efficient computation of the N-th rank QED polarization tensor: Universal worldline structure of form factors

Xabier Feal, Andrey Tarasov, Raju Venugopalan

We derived in arXiv:2206.04188 arXiv:2211.15712 a compact expression for the $N$-th rank QED polarization tensor ${\Pi }_{{\mu }_1\cdots {\mu }_N}(k_1,\cdots ,k_N)$ in a $(0+1)$-dimensional worldl…