Effects of Nonlocal One-Pion-Exchange Potential in Deuteron

Abstract

The off-shell aspects of the one-pion-exchange potential (OPEP) are discussed. Relativistic Hamiltonians containing relativistic kinetic energy, relativistic OPEP with various off-shell behaviors and Argonne $v_{18}$ short-range parameterization are used to study the deuteron properties. The OPEP off-shell behaviors depend on whether a pseudovector or pseudoscalar pion-nucleon coupling is used and are characterized by a parameter $\mu$. We study potentials having $\mu$=-1, 0 and +1 and we find that they are nearly unitarily equivalent. We also find that a nonrelativistic Hamiltonian containing local potentials and nonrelativistic kinetic energy provides a good approximation to a Hamiltonian containing a relativistic OPEP based on pseudovector pion-nucleon coupling and relativistic kinetic energy.

23 pages, RevTeX, 6 PostScript figures, submitted to Physical Review C

References in corpus (3)

• Quantum Monte Carlo calculations of nuclei with A \leq 7
• Equivalence of Nonstatic Two-Pion-Exchange Nucleon-Nucleon Potentials
• Quantum Monte Carlo Studies of Relativistic Effects in Light Nuclei

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