摘要: Abstract A WKB formalism is presented whereby the tunneling rate of a quantum spin obtained in semiclassical limit when h → 0 and number S ∞ such way that remains constant. The main idea to single out one t anisotropy axes, say z-axis, work representation with Sz, z-component spin, diagonal describe as hopping process on spectrum Sz. This enables us efficiently handle problems, incorporate dissipation, prove universal, i.e. independent particular form anisotropy.
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