Quantizations on the circle and coherent states

Details Quantizations on the circle and coherent states Quantizations on the circle and coherent states

2012-01-18

arxiv.org/abs/1201.3895v1

Physics

Quantum Physics

15 pages, 4 figures, accepted in J. Phys. A: Math. Theor. 45 (2012) for the Special issue on coherent states: mathematical and

Scientific paper

We present a possible construction of coherent states on the unit circle as configuration space. Our approach is based on Borel quantizations on S^1 including the Aharonov-Bohm type quantum description. The coherent states are constructed by Perelomov's method as group related coherent states generated by Weyl operators on the quantum phase space Z x S^1. Because of the duality of canonical coordinates and momenta, i.e. the angular variable and the integers, this formulation can also be interpreted as coherent states over an infinite periodic chain. For the construction we use the analogy with our quantization and coherent states over a finite periodic chain where the quantum phase space was Z_M x Z_M. The coherent states constructed in this work are shown to satisfy the resolution of unity. To compare them with canonical coherent states, also some of their further properties are studied demonstrating similarities as well as substantial differences.

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