Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
1999-10-09
Mod.Phys.Lett. A14 (1999) 2011-2023
Physics
High Energy Physics
High Energy Physics - Theory
revtex,14 pages,no figure
Scientific paper
10.1142/S0217732399002078
From the topological properties of a three dimensional vector order parameter, the topological current of point defects is obtained. One shows that the charge of point defects is determined by Hopf indices and Brouwer degrees. The evolution of point defects is also studied. One concludes that there exist crucial cases of branch processes in the evolution of point defects when the Jacobian $D(\frac \phi x)=0$.
Duan Yishi
Fu Libin
Zhang Hong
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