Abstract
Publisher Summary This chapter discusses the difference between three important sets of states related to the SU(2) algebra and describes the properties of the Heisenberg uncertainty relation associated with the elements of this algebra. These states can be classified into minimum uncertainty states, Bloch states, which are atomic or coherent spin states, and intelligent spin states. The chapter discusses the dynamical properties associated with the intelligent spin states. The set of all generalized intelligent spin (G.I.S.S) states contains the Bloch states; therefore, {G.I.S.S} can be called a refinement of them. The G.I.S.S. do not necessarily satisfy the Heisenberg equality. The chapter further illustrates the time evolution of a nonrelativistic system of spin j having a magnetic moment γ, with the help of certain equations.
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