Aharonov-Anandan geometric phase for spin-1/2 periodic Hamiltonians
D J Fernandez C; L M Nietot; M A del Olmo; M Santander; D J Fernandez C; Dept. de Fisica Teorica, Volladolid Univ., Spain; L M Nietot; Dept. de Fisica Teorica, Volladolid Univ., Spain; M A del Olmo; Dept. de Fisica Teorica, Volladolid Univ., Spain; M Santander; Dept. de Fisica Teorica, Volladolid Univ., Spain
Журнал:
Journal of Physics A: Mathematical and General
Дата:
1992-10-07
Аннотация:
The authors calculate exactly the Aharonov-Anandan phase for the evolution of a spin-1/2 in some periodic time-dependent magnetic fields, and give a discussion of the results versus the adiabatic ones. In particular, they analyse the existence of cyclic states and show explicit examples of systems with a prescribed value of the AA phase for all cyclic evolutions.
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