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arXiv 0810.1967math-phmath.MP
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q变形谐振子、相干态和测不准关系

The q-Deformed Harmonic Oscillator, Coherent States, and the Uncertainty Relation

V. V Eremin, A. A. Meldianov

摘要:

对于一个q-变形谐振子,我们发现明确的坐标表示的创建和湮灭运营商,本征函数,相干态(最后被定义为本征态的湮灭运营商)。我们计算了q振子本征态和相干态的坐标动量不确定性的乘积。对于振子,这个乘积在基态最小,等于1/2,就像标准量子力学中一样。对于相干态,$q$ -变形的结果违反了标准的不确定性关系,坐标和momentumoperator的不确定性的产品总是小于1/2。具有最小不确定性的状态(趋于零)对应于接近$q$ -指数收敛半径的$λ$值。

英文摘要:

For a q-deformed harmonic oscillator, we find explicit coordinate representations of the creation and annihilation operators, eigenfunctions, and coherent states (the last being defined as eigenstates of the annihilation operator). We calculate the product of the coordinate momentum uncertainties in qoscillator eigenstates and in coherent states. For the oscillator, this product is minimum in the ground state and equals 1/2, as in the standard quantum mechanics. For coherent states, the $q$-deformation results in a violation of the standard uncertainty relation; the product of the coordinate- and momentumoperator uncertainties is always less than 1/2. States with the minimum uncertainty, which tends to zero, correspond to the values of $λ$ near the convergence radius of the $q$-exponential.

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