Abstract
AbstractWe formulate the Hartree–Fock method using a functional integral approach. Then we consider a nonperturbative component of the vacuum polarization. For the Dirac–Coulomb operator the renormalization flow of the vacuum polarization is calculated numerically. For the Hartree–Fock operator the polarization is obtained by integrating an appropriately rescaled flow. The text includes an approximate calculation of the vacuum polarization in Uranium.
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