Gravity Class Of Magnetic Monopoles And Pentaquark Analysis

In this paper, theory of Dirac monopole and other models of monopole firstly are briefly reviewed. In different models, the solution of equation can be interpreted as monopole. If monopole is lodged, the generalized dual Maxwell equations with source can be obtained. Then based on Dirac monopole theory, we can obtain the symmetrized form of linearized Einstein equation naturaly. We compare generalized relativity with eletrodynamics and introduce a new concept of Dirac-type of gravitomagnetic monopole. The symmetrized Einstein equation is established, which followed by a generalized Dirac Quantization condition of gravitomagnetic monopole q and massive charge m comparable with the usual one. Where we know that this is only weak relation and the mass carried by the particles in nature exhibit a very wide spectrum.At last, in terms of the generalized moment analysis method , the expression ofthe non-zero moment of process arepresented , which can be useful to spin-parity analysis of the penta-quark Θ. From the characteristic of non-zero moment, we establish that the spin of Θ is. Only from the result of non-zero moment, the parity of Θ can not be confirmed for the non-zero moment depend on the spin JΘ but not PΘ of Θ.