Topological defects in spinor condensates

Details Topological defects in spinor condensates Topological defects in spinor condensates

2003-05-21

arxiv.org/abs/cond-mat/0305497v2

J. Phys. A: Math. Gen. 36, 8555 (2003)

Physics

Condensed Matter

Soft Condensed Matter

10 pages, 1 figure. Published version

Scientific paper

10.1088/0305-4470/36/32/302

We investigate the structure of topological defects in the ground states of spinor Bose-Einstein condensates with spin F=1 or F=2. The type and number of defects are determined by calculating the first and second homotopy groups of the order-parameter space. The order-parameter space is identified with a set of degenerate ground state spinors. Because the structure of the ground state depends on whether or not there is an external magnetic field applied to the system, defects are sensitive to the magnetic field. We study both cases and find that the defects in zero and non-zero field are different.

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