Chin. Phys. Lett.  2000, Vol. 17 Issue (9): 652-654    DOI:
Original Articles |
Relativistic Spin-Isospin Dependent Response Function of Nucleus
LIU Liang-Gang;CHEN Wei;AI Bao-Quan;ZHENG Xiao-Ping;Masahiro Nakano*
Department of Physics, Zhongshan University, Guangzhou 510275 *University of Occupational and Environmental Health Kitakyusyu 807, Japan
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LIU Liang-Gang, CHEN Wei, AI Bao-Quan et al  2000 Chin. Phys. Lett. 17 652-654
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Abstract A full relativistic formalism is employed to derive the relativistic particle-hole and delta-hole excitation polarization insertion of pion propagator in nuclear matter. The spin-isospin-dependent response function of nucleus at high energy-momentum transfer is calculated with the nuclear matter approximation. The short range correlation effect, two-nucleon absorption and nucleus form factor effects are included in the calculation. The position and width of the resonance peak of the spin-isospin mode are reproduced and found to be coincident with experiment data. The position of the peak and its width is sensitive to Landau-Migdal parameter g’ which is about 0.6.
Keywords: 21.65.+f      24.10.Jv      25.55.Kr     
Published: 01 September 2000
PACS:  21.65.+f  
  24.10.Jv (Relativistic models)  
  25.55.Kr (Charge-exchange reactions)  
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https://cpl.iphy.ac.cn/       OR      https://cpl.iphy.ac.cn/Y2000/V17/I9/0652
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LIU Liang-Gang
CHEN Wei
AI Bao-Quan
ZHENG Xiao-Ping
Masahiro Nakano
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