scholarly journals THE PENTAQUARKS IN THE LINEAR MOLECULAR HEPTAQUARK MODEL

2005 ◽  
Vol 20 (19) ◽  
pp. 4593-4598
Author(s):  
P. Bicudo
Keyword(s):  
Quark Model ◽  
Decay Width ◽  
Ground State ◽  
Short Range ◽  
Molecular System ◽  
Short Range Interaction ◽  
Range Interaction

In this talk, multiquarks are studied microscopically in a standard quark model. In pure ground-state pentaquarks the short-range interaction is computed and it is shown to be repulsive. An additional quark-antiquark pair is then considered, and this is suggested to produce linear molecular system, with a narrow decay width. The quarks assemble in three hadronic clusters, and the central hadron provides stability. The possible crypto-heptaquark hadrons with exotic pentaquark flavours, with strange, charmed and bottomed quarks, are predicted.

Reorientation Phase and Striped Domain Patterns of Thin Films

2005 ◽  
Vol 475-479 ◽  
pp. 3165-3168 ◽  
Author(s):  
Qian Feng ◽  
Qing Ying Ye ◽  
Zhen Zhen Wen ◽  
Li Qin Jiang ◽  
Zhi Gao Huang ◽  
...  
Keyword(s):  
Phase Diagram ◽  
Ground State ◽  
Short Range ◽  
Uniaxial Anisotropy ◽  
Dipolar Interaction ◽  
Temperature Phase ◽  
Short Range Interaction ◽  
Range Interaction ◽  
Out Of Plane ◽  
Temperature Phase Diagram

A ferromagnetic monolayer with competing long-range dipolar interaction, short-range interaction and magnetic uniaxial anisotropy is studied using Monte Carlo simulation. Striped domain patterns are found and reveal the microstructure of the magnetization transition at the ground state via the competing between dipolar interaction and uniaxial anisotropy. We present the finite temperature phase diagram and find a temperature-induced magnetization reorientation from out-of-plane to in-plane phase. The influence of the various interactions on the structure of the striped phase and reorientation behavior has been discussed.

BARYON–BARYON INTERACTION IN THE EXTENDED CHIRAL SU(3) QUARK MODEL

2008 ◽  
Vol 23 (27n30) ◽  
pp. 2413-2416 ◽  
Author(s):  
L. R. DAI ◽  
H. ZHANG ◽  
Y. FU ◽  
Z. Y. ZHANG ◽  
Y. W. YU
Keyword(s):  
Vector Meson ◽  
Quark Model ◽  
Short Range ◽  
Meson Exchange ◽  
Group Method ◽  
Short Range Interaction ◽  
Range Interaction ◽  
Baryon Interaction ◽  
The One ◽  
Vector Meson Exchange

The hyperon-nucleon scattering processes and some dibaryon states are studied both in the chiral SU(3) quark model and in the extended chiral SU(3) quark model by solving the resonating group method (RGM) equation. We find that the short-range interaction could be described either by the one-gluon exchange or by the vector meson exchange for baryon-baryon system.

scholarly journals THE SHORT RANGE MECHANISM OF N-N INTERACTION IN THE EXTENDED CHIRAL SU(3) QUARK MODEL

2005 ◽  
Vol 20 (08n09) ◽  
pp. 1994-1997 ◽  
Author(s):  
L. R. DAI ◽  
Z. Y. ZHANG ◽  
Y. W. YU
Keyword(s):  
Vector Meson ◽  
Quark Model ◽  
Short Range ◽  
Nucleon Nucleon ◽  
Phase Shifts ◽  
Short Range Interaction ◽  
Nucleon Interaction ◽  
Range Interaction ◽  
Nucleon Nucleon Interaction

We give the comparisons between the chiral SU (3) quark model and the extended chiral SU (3) quark model. The results show that the phase shifts of NN scattering are very similar. However, the short range mechanisms of nucleon-nucleon interaction are totally different. In the chiral SU (3) quark model, the short range interaction is dominantly from OGE, and in the extended chiral SU (3) quark model, it is dominantly from vector meson exchanges.

Short-range interaction energy for ground state H2+

2006 ◽  
Vol 420 (1-3) ◽  
pp. 120-124 ◽  
Author(s):  
Michele Battezzati ◽  
Camilla Costa ◽  
Valerio Magnasco
Keyword(s):  
Interaction Energy ◽  
Ground State ◽  
Short Range ◽  
Short Range Interaction ◽  
Range Interaction
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