广义su(1,1)代数与Pöschl-Teller势非线性相干态的构造
Generalized su(1,1) algebra and the construction of nonlinear coherent states for Pöschl-Teller potential
摘要:
本文引入了su(1,1)代数的一个推广结构,它依赖于代数f(H)的一个生成元的函数.根据推广到广义海森堡代数(GHA)和推广到广义su(2)的相同思想,我们证明了在代数的一个生成元的特征值序列中存在对称性.然后,我们构造了Pöschl-Teller势中粒子的广义su(1,1)代数的Barut-Girardello相干态.此外,我们还比较了所构造的相干态和GHA相干态的测不准关系随时间的演化。广义su(1,1)相干态是非常局域化的。
英文摘要:
We introduce a generalization structure of the su(1,1) algebra which depends on a function of one generator of the algebra, f(H). Following the same ideas developed to the generalized Heisenberg algebra (GHA) and to the generalized su(2), we show that a symmetry is present in the sequence of eigenvalues of one generator of the algebra. Then, we construct the Barut-Girardello coherent states associated with the generalized su(1,1) algebra for a particle in a Pöschl-Teller potential. Furthermore, we compare the time evolution of the uncertainty relation of the constructed coherent states with that of GHA coherent states. The generalized su(1,1) coherent states are very localized.
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