- 
                        
                                 Abstract:We discuss a category of stable dark matter particles which are weakly interacting and related to the superstructure of the universe.These particles may be degenerate fermions and the bosons near a high temperature state.In both cases,we deduce that the particle mass is ~10-1eV and the absolute value of its chemical potential is <<10-1eV.This result is not in contradiction with the dip phenomena of the ultra high energy primary cosmic ray spectrum at ~1015eV and ~1018eV.
- 
	                          
- 
                        References
	
			| [1] | 黄无量,高能物理与核物理,20(1996)409.[2]R.B.Tully,Ap.J.,303(1986)25;Ap.J.,323(1986)1.[3]M.J.Geler et al.,Science,246(1989)897.[4]T.J.Broadhurst et al.,Nature,343(1990)726.[5]L.D.Landau et al.,Statistical Physics,Pergamon Press,London,1958.[6]黄无量,高能物理与核物理,15(1991)1135.[7]S.Weinberg,Gravitation and Cosmology,J.Wiley,New York,1972. 
 |  
 
- 
                    	
	
				| [1] | HU Xi-Duo
								, SHAO Ming-Zhu
								, LUO Shi-Yu
								, LIU Yong-Sheng
								, ZHU De-Hai
								. Average Field Idea and Single Particle Model for 2 Dimension Crystallization Beams(Ⅱ). Chinese Physics C,
							2004, 28(2): 196-199. |  
				| [2] | LI Ming-Liang
								, ZHU Sheng-Jiang
								, CHE Xing-Lai
								, YU Ying-Nan
								. Research on Two-Quasiparticle Bands in 98Sr. Chinese Physics C,
							2004, 28(S1): 75-77. |  
				| [3] | Guo Hua
								. In-medium QMC Model Parameters and Quark Condensation in Nuclear Matter. Chinese Physics C,
							1999, 23(5): 459-468. |  
 
- 
                        Access  
- 
                        
-