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Quark structure and nuclear effective forces.

P A M Guichon1, A W Thomas

  • 1SPhN-DAPNIA, CEA Saclay, F91191 Gif sur Yvette, France.

Physical Review Letters
|November 5, 2004
PubMed
Summary
This summary is machine-generated.

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The quark meson coupling model, when formulated as a many-body Hamiltonian, naturally introduces many-body forces. This formulation provides a satisfactory interpretation of the Skyrme force in nuclear matter physics.

Area of Science:

  • Nuclear Physics
  • Quantum Field Theory

Background:

  • The quark meson coupling (QMC) model is a theoretical framework used to study the properties of nuclear matter.
  • Effective Hamiltonians are crucial for describing complex quantum systems like atomic nuclei.

Purpose of the Study:

  • To reformulate the quark meson coupling model as a many-body effective Hamiltonian.
  • To investigate the implications of this formulation, particularly the emergence of many-body forces.
  • To compare the QMC model's Hartree-Fock Hamiltonian with the Skyrme effective force.

Main Methods:

  • Formulation of the quark meson coupling model as a many-body effective Hamiltonian.
  • Investigation of the zero-range limit of the QMC model.
  • Comparison of the QMC Hartree-Fock Hamiltonian with the Skyrme effective force Hamiltonian.

Related Experiment Videos

  • Parameter fitting using binding and symmetry energy of nuclear matter.

    • Main Results:

    • The formulation naturally leads to the appearance of many-body forces.
    • The Hartree-Fock Hamiltonian in the zero-range limit shows a strong correspondence with the Skyrme effective force.
    • The QMC model, with parameters fixed to nuclear matter properties, offers a satisfactory interpretation of the Skyrme force.

    Conclusions:

    • The quark meson coupling model, when treated as a many-body effective Hamiltonian, provides a consistent framework for understanding nuclear forces.
    • This approach offers a valuable alternative perspective on the Skyrme effective force, connecting it to fundamental QMC principles.