The q-deformed harmonic oscillator, coherent states, and the uncertainty relation

被引:0
|
作者
V. V. Eremin
A. A. Meldianov
机构
[1] Moscow State University,
来源
Theoretical and Mathematical Physics | 2006年 / 147卷
关键词
-deformation; harmonic oscillator; creation operators; annihilation operators; coherent states; uncertainty relation;
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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 q-oscillator 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 momentum-operator 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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页码:709 / 715
页数:6
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