Physics – Condensed Matter – Disordered Systems and Neural Networks
Scientific paper
2003-05-23
Commun. Theor. Phys. 39(2003), 1-5
Physics
Condensed Matter
Disordered Systems and Neural Networks
11 pages, no figure
Scientific paper
Yangian $Y(sl(2))$ is realized in the bi-spin system coupled with a time-dependent external magnetic field. It is shown that $Y(sl(2))$ generators can describe the transitions between the ``spin triplet'' and the ``spin singlet'' that evolve with time. Furthermore, new transition operators between the states with Berry phase factor and those between the states of Nuclear Magnetic Resonance (NMR) are presented.
Jin Shuo
Xie Bing-Hao
Xue Kang
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