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Continue to ChatVacuum polarization in self-field quantum electrodynamics - https://avesis.akdeniz.edu.tr/yayin/49ea1b5a-4bbe-4419-8b8f-462ded4c6fa6/vacuum-polarization-in-self-field-quantum-electrodynamics
Vacuum polarization in self-field quantum electrodynamics - https://avesis.akdeniz.edu.tr/yayin/49ea1b5a-4bbe-4419-8b8f-462ded4c6fa6/vacuum-polarization-in-self-field-quantum-electrodynamics