Physics – Condensed Matter
Scientific paper
2000-12-12
Phys.Lett. B513 (2001) 241-244
Physics
Condensed Matter
reference added latex sigma.tex, 1 file, 5 pages [SPhT-T00/177], submitted to Phys. Lett. B
Scientific paper
10.1016/S0370-2693(01)00738-9
We show that the ground states of spin-fermions interacting by a delta
repulsive potential in a strong magnetic field can be put in one to one
correspondence with the solitons of the $S_2$ non linear $\sigma$-model.
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