Calculations of Pion Excess in Nuclei

Phys. Rev. Lett. 51, 763 – Published 29 August 1983
B. L. Friman, V. R. Pandharipande, and R. B. Wiringa


The authors construct, in the static potential approximation, the number operator for excess pions present in nuclei due to the pion-exchange forces between nucleons. Expectation values are calculated with use of variational wave functions obtained from a realistic Hamiltonian. Results are presented for systems ranging from the deuteron to nuclear matter: For example Fe56 is estimated to have ∼7 extra pions, over and above the pion clouds associated with the individual nucleons.


  • Received 27 May 1983
  • Published in the issue dated 29 August 1983

© 1983 The American Physical Society

Authors & Affiliations

B. L. Friman and V. R. Pandharipande

  • Department of Physics, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801

R. B. Wiringa

  • Physics Division, Argonne National Laboratory, Argonne, Illinois 60439

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