S Twareque Ali et al 2004 J. Phys. A: Math. Gen. 37 4407 doi:10.1088/0305-4470/37/15/009
Representations of coherent states in non-orthogonal bases
S Twareque Ali1, R Roknizadeh2 and M K Tavassoly2
Show affiliationsStarting with the canonical coherent states, we demonstrate that all the so-called nonlinear coherent states, used in the physical literature, as well as large classes of other generalized coherent states, can be obtained by changes of bases in the underlying Hilbert space. This observation leads to an interesting duality between pairs of generalized coherent states, bringing into play a Gelfand triple of (rigged) Hilbert spaces. Moreover, it is shown that in each dual pair of families of nonlinear coherent states, at least one family is related to a (generally) non-unitary projective representation of the Weyl–Heisenberg group, which can then be thought of as characterizing the dual pair.
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Issue 15 (16 April 2004)
Received 5 December 2003
Published 29 March 2004
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Representations of coherent states in non-orthogonal bases
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