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QMC model with density- and temperature- dependent quark masses

QMC model with density- and temperature- dependent quark masses. Wei-Liang Qian Fudan University. Outline. Motivation QHD models Bag model and QMC QMDTD QMDTD with mesons Numerical Result Conclusion. Motivation.

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QMC model with density- and temperature- dependent quark masses

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  1. QMC model with density- and temperature- dependent quark masses Wei-Liang Qian Fudan University

  2. Outline • Motivation • QHD models • Bag model and QMC • QMDTD • QMDTD with mesons • Numerical Result • Conclusion

  3. Motivation • To study nuclear matter in a model combining quark and meson degree of freedom • Dynamic confinement/deconfinement mechanism

  4. QHD • QHD-I – a reasonable starting point for a study of nuclear matter

  5. Nucl-th/9701058

  6. QHD • ZM (Derivative scalar coupling) • Improved ZM (Tensor coupling, isovector meson) • QHD – II (Local gauge, Higgs mechanism) • FST (Nonlinear Chiral, Broken Scale Invariance, Vector Dominance)

  7. Bags and QMC • Bag and Soliton models • Two Extremes (MIT bag and Skyrme model)

  8. Bags and QMC • Explicitly include meson degree of freedom --- Quark Meson Coupling (QMC) Model • Consists of Non-overlapping Nucleon Bags Bounding by self-consistent Exchange of Meson in MFA

  9. Bags and QMC • MIT bag model Nonlinear boundary condition Linear boundary condition

  10. Bags and QMC • QMC

  11. Bags and QMC • QMC

  12. Bags and QMC • QMC

  13. Bags and QMC • QMC

  14. Bags and QMC Nucl-th/9811088 • QMC

  15. Bags and QMC • QMC

  16. Bags and QMC • Non-topological soliton model (F-L model) • Dynamical confinement/deconfinement mechanism

  17. PRD 41 (1990) 2288, PRD 46 (1992) 3211

  18. QMDTD

  19. QMDTD Euro. Phys. Lett 56 (2001) 361

  20. QMDTD

  21. QMDTD PRC 65 (2002) 035202, PRC 67 (2003) 015202

  22. QMDTD

  23. QMDTD

  24. QMDTD with mesons • Explicitly include meson degree of freedom in QMDTD

  25. QMDTD with mesons

  26. QMDTD with mesons

  27. QMDTD with mesons

  28. QMDTD with mesons

  29. QMDTD with mesons

  30. Numerical Result

  31. Numerical Result

  32. Numerical Result

  33. Numerical Result

  34. Numerical Result

  35. Numerical Result

  36. Numerical Result

  37. Conclusion • A quark model for nuclear matter based on NTS model • Reproduce the bulk properties of nuclei • Dynamic deconfinement at Tc

  38. Thank you!

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