SU(1,1), SU(2), and SU(3) coherence-preserving Hamiltonians and time-ordering techniques
- 1 February 1987
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 35 (4) , 1582-1589
- https://doi.org/10.1103/physreva.35.1582
Abstract
The Wei-Norman ordering technique is utilized to present a unified approach to the time ordering for SU(2), SU(1,1), and SU(3) coherence-preserving Hamiltonians. It is shown that the characteristic equations of the ordering method can be cast in the form of a generalized Bloch equation in an SU(2), SU(1,1), and SU(3) space. The laws of conservation, linked to the Casimir invariants of the algebra, are also directly derived from the Wei-Norman characteristic equations.Keywords
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