CHIRAL SYMMETRY IN NUCLEAR MANY BODY SYSTEM

2008 ◽  
Vol 23 (27n30) ◽  
pp. 2551-2559
Author(s):  
HIROSHI TOKI ◽  
YOKO OGAWA ◽  
TAKAYUKI MYO ◽  
SETSUO TAMENAGA ◽  
KIYOMI IKEDA
Keyword(s):  
Sigma Model ◽  
Field Model ◽  
Mean Field ◽  
Magic Number ◽  
Nucleon Nucleon ◽  
Tensor Interaction ◽  
Pion Exchange ◽  
Many Body ◽  
Mean Field Model ◽  
Nucleon Nucleon Interaction

The pion was introduced by Yukawa as the mediator of nucleon-nucleon interaction to bind nucleons in nucleus. Due to its characteristic properties, however, the pion had not be used until recent years for description of nuclei. We present here a newly developed method to treat the pion exchange interaction in nuclei. We study nuclear structure by using the chiral sigma model lagrangian in the relativistic chiral mean field model with projection. The pion develops mean field and provides a magic number effect. We demonstrate also the ability of treating tensor interaction due to pion exchange in terms of tensor optimized shell model.

Experimental tests for many-body forces in noble gas fluids

1988 ◽  
Vol 66 (4) ◽  
pp. 598-608 ◽  
Author(s):  
P. A. Egelstaff
Keyword(s):  
Experimental Data ◽  
Field Model ◽  
Noble Gas ◽  
Transport Coefficients ◽  
Mean Field ◽  
Pair Potential ◽  
Experimental Tests ◽  
Many Body ◽  
Mean Field Model ◽  
Body Forces

Effects due to many-body potentials may be studied by comparing the predictions of precise computer simulations (using a good pair potential) with real experimental data. The differences observed may be of almost any relative magnitude, varying with state parameters and other experimental variables. Results of this kind will be discussed regarding P.V.T. data, transport coefficients, and static and dynamic structure factors of noble gas fluids. They are compared to the predictions of a simple mean field model for each effect, in which pair potential simulation is used as the reference system. The model is used as a tool to determine the information content of each property. Reasonable agreement is found for bulk properties, while the extra sensitivity offered by the microscopic data allows a number of deficiencies in the model to be observed. In contrast, a similar series of tests using a computer model, made from the pair potential and the A–T potential in place of the experimental data, shows significantly better overall agreement with the mean field model. This is believed to be due to the neglect of important short range terms in the A–T model. It is concluded that at least three types of many-body forces are important in discussing dense noble gas fluids.

scholarly journals Applications of the relativistic mean-field model to finite nuclei.

2020 ◽  
Vol 9 ◽  
pp. 256
Author(s):  
G. A. Lalazissis
Keyword(s):  
Body Problem ◽  
Field Model ◽  
Mean Field Theory ◽  
Mean Field ◽  
Many Body ◽  
Mean Field Model ◽  
Consistent System ◽  
Relativistic Mean Field ◽  
Self Consistent ◽  
Finite Nuclei

The relativistic mean-field theory (RMF) provides a framework in which the nuclear many-body problem is described as a self-consistent system of nucléons and mesons. We review recent applications of the RMF theory to the structure of finite nuclei.

scholarly journals Quark mean-field model for single and double   and   hypernuclei

2014 ◽  
Vol 2014 (1) ◽  
pp. 13D02-0 ◽  
Author(s):  
J. N. Hu ◽  
A. Li ◽  
H. Shen ◽  
H. Toki
Keyword(s):  
Field Model ◽  
Mean Field ◽  
Mean Field Model
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