1 / 25

Constraining the density dependence of the symmetry energy in finite nuclei and nuclear matter

Constraining the density dependence of the symmetry energy in finite nuclei and nuclear matter. Wei-Zhou JIANG Department of Physics, Southeast University Nanjing, China Collaborators : Bao-An Li , Lie-Wen Chen , Yao-Lin Zhao, Zhi-Yuan Zhu , Zhong-Zhou Ren et.al.

navid
Download Presentation

Constraining the density dependence of the symmetry energy in finite nuclei and nuclear matter

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Constraining the density dependence of the symmetry energy in finitenuclei and nuclear matter Wei-Zhou JIANG Department of Physics, Southeast University Nanjing, China Collaborators:Bao-An Li,Lie-Wen Chen,Yao-Lin Zhao, Zhi-Yuan Zhu,Zhong-Zhou Ren et.al.

  2. Enhancement of the sensitivity of observables to the DDSE • Deexcitation energy as a good probe to DDSE • Constraints from model chirality • A new source in modifying the DDSE——CSB • Summary

  3. 1. Enhancement of the sensitivity of observables to the DDSE • NN tensor coupling • Increase the density by adding Λ

  4. NN tensor coupling with And strange meson included

  5. Phys. Lett. B617(05)33

  6. Increase the density(1) Multi- Λ hypernuclei Metastable exotic multihypernuclear objects (MEMOs) J.Schaffner, et.al. PRL71(1993)1328; Ann. Phys. (N.Y.) 235 (1994) 35 Multi-Λhypernuclei based on 102Ca EB/A of 102Ca+Λ’s

  7. (2) Matter with hyperonization Glendenning, Phys.Rept.342(2001)393;Astrophys. J. 293 (1985) 47 fY=ρY/ρB Jiang, Nucl-th/0609024, PLB 642(06)28

  8. 2. Deexcitation energy as a good probe to DDSE Difficult neutron radius measurement for Pb208 at JLab A~190 Ground state: Oblate Superdeformed Secondary minimum(SSM): Prolate Collective excitations: isovector changes

  9. Deexcitation energy • Difference of binding energies between the g.s. & SSM • Determined by the difference of potentials • Influenced by the isovector potential and the DDSE

  10. FSUGold

  11. Odd-odd Au isotopes Almost independent of pairing interactions

  12. 3. Constraining with the model chirality • Properties of nucleons and mesons in medium should be constrained by the chiral symmetry and its breaking. • Symmetry energy is dominated by the isovector mesons. • A good candidate is the Walecka model with Brown-Rho scaling: Simple but with chiral limit

  13. P.Danielewicz, R.Lacey,W.G.Lynch, Science 298(2002)1592 Pressure of well constructed models Collective flow data from high energy heavy-ion reactions

  14. The DDSE Constrained by isospin diffusion data Jiang, Li, Chen, Phys. Lett. B653(07)184

  15. 4. A new source in modifying the DDSE——CSB

  16. Lowest Order: npe matter at beta equilibrium

  17. All orders in RPA

  18. Symmetry energy

  19. Summary • We proposed a few theoretically sensitive probes to the DDSE. • Deexcitation energy of SSM is a good probe to the DDSE. • Some constraints from chirality were studied. • CSB & the DDSE, the symmetry energy is largely softened at high densities.

  20. Thank you!

  21. By single-particle property!

More Related