Many Body Theory
نویسندگان
چکیده
We study theoretically the spin response functions using the relativistic many body theory. The spin response functions in the relativistic theory are reduced largely from the ones of the non-relativistic theory. This happens particularly to the longitudinal spin responses. This fact is able to remove the difficulty in reproducing the ratio of the longitudinal and transverse response functions seen experimentally. We use the local density approximation with the eikonal approximation to the nuclear absorption on the incoming and outgoing nucleons for the calculations of the response functions of finite nuclei. We compare the calculated results with the recent experimental results with (p, n) reactions on C and Ca.
منابع مشابه
Two and Three-Body Interactions between CO, H2O, and HClO4
Intermolecular interactions of different configurations in the HOClO3···CO and HOClO3···H2O dyad and CO···HOClO3···H2O triad systems have been studied at MP2/6-311++G(2d,2p) computational level. Molecular geometries, binding energies, cooperative energies, many-body interaction energies, and Energy Decomposition Analysis (EDA) were eval...
متن کاملدانش، بینش و مدیریت
Model building is one of the most important characteristics of human beings. According to a classification, there are three kinds of models. The first type are omdels which are unique to every individual person and every body has his own models. Another kind of models are those which are general. Theories arise from this kind of models. The third kind are modols for model building and deals wit...
متن کاملتوصیف برهمکنشهای بسذرهای هستهای در چارچوب نظریه تغییر شکل کوانتومی
A fermion realization of compact symplectic algebra provides a natural framework for studying pairing correlations of many-body interactions in nuclei. Here, we use quantum deformation concept in order to describe pairing correlations in atomic nuclei. While the nondeformed limit of the theory provides a reasonable and overall description of certain nuclear properties and fine structure effects...
متن کاملتحلیل داده ها در روش تحقیق نظریه پایه
Grounded Theory is a qualitative research approach used to explore the social processes that present within human interactions. Glaser and Strauss (1967) developed the method and published the first text addressing method issues. Grounded theory includes systematic techniques and procedures of analysis that enable the researcher to develope a substantive theory. The discovery of a core varia...
متن کاملInvestigation of strong force influence on behavior of nuclear energy levels in Calcium and Titanium isotopes: Based on quantum chaos theory
The atomic nucleus is a complex many-body system that consists of two types of fermion (neutron and proton). They are in the strong interaction. The statistical properties of energy levels and influence of strong force between these fermions are well described by random matrix theory. Resonance of energy levels depends on the Hamiltonian symmetry placed in one of the GOE, GUE and GSE ensembles ...
متن کاملHalogenated Graphdiyne and Graphyne Single Layers: A Systematic Study
Graphyne and graphdiyne families of flat carbon (sp2/sp) networks with high degrees of π-conjunction are attracting much attention due to their promising electronic, optical, and mechanical properties. In the present investigation we have studied the structural, mechanical, electrical and optical properties of halogenated graphdiyne and graphyne. The optical spectra of pure and halog...
متن کامل