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Nuclear matter from effective quark-quark interaction.

M Baldo1, K Fukukawa1

  • 1INFN, Sezione di Catania, via Santa Sofia 64, I-95123 Catania, Italy.

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Summary
This summary is machine-generated.

This study explores neutron and nuclear matter using a quark-meson model. Results show significant saturation effects from three-body forces, aligning with experimental constraints.

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Area of Science:

  • Nuclear Physics
  • Quantum Chromodynamics
  • Many-Body Theory

Background:

  • Understanding nuclear matter properties is crucial for nuclear physics.
  • Existing models often require additional parameters to explain nuclear interactions.

Purpose of the Study:

  • To investigate neutron and symmetric nuclear matter using a quark-meson model.
  • To analyze the role of three-hole-line contributions in nuclear interactions.

Main Methods:

  • Utilizing the quark-meson model for two-nucleon interactions.
  • Applying Bethe-Bruckner-Goldstone many-body theory up to the three hole-line approximation.

Main Results:

  • The three hole-line contribution was found to be significant and provide substantial saturation effects.
  • Calculated properties like saturation point and compressibility align with phenomenological constraints.
  • The model accurately reproduces properties of the three-nucleon system.

Conclusions:

  • The quark-meson model, incorporating quark degrees of freedom, offers a parameter-free approach to nuclear matter.
  • Explicit quark degrees of freedom are expected to diminish the necessity of explicit three-body forces.