2 papers
quant-ph2000
The Wigner Kernel of a Particle obtained from the Wigner Kernel of a Spin by Group Theoretical Contraction
Jean-Pierre Amiet, Stefan Weigert
The Moyal formalism for a particle can be derived from the Moyal formalism for a spin. This is done by contracting the group of rotations to the oscillator group. A new derivation…
quant-ph1999
Coherent States and the Reconstruction of Pure Spin States
Jean-Pierre Amiet, Stefan Weigert
Coherent states provide an appealing method to reconstruct efficiently a pure state of a quantum mechanical spin s. A Stern-Gerlach apparatus is used to measure (4s+1) expectations…