Abstract:We study the coupled-top model with three large spins located on a triangle. Depending on the coupling strength, there exist three phases: disordered paramagnetic phase, ferromagnetic phase, and frustrated antiferromagnetic phase, which can be distinguished by the mean-field approach. The paramagnetic-ferromagnetic phase transition is accompanied by the breaking of the global Z2 symmetry, whereas the paramagnetic-antiferromagnetic phase transition is accompanied by the breaking of both the global Z2 symmetry a… Show more
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