Vacuum radiation pressure fluctuations and barrier penetration
Vacuum radiation pressure fluctuations and barrier penetration
复制标题
真空辐射压波动和势垒穿透
DOI：
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发表时间：
2016
期刊：
影响因子：
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通讯作者：
L. Ford
中科院分区：
文献类型：
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作者：
Haiyun Huang;L. Ford
我们将量子应力张量涨落概率分布的最新结果应用于量子粒子穿透势垒问题。随着涨落幅度的增加，大应力张量涨落的几率下降得相对较慢，特别是当量子应力张量算符在有限时间间隔内被平均时。这可能会导致带电或可极化粒子上的真空辐射压力波动很大，进而可能会将粒子推过势垒。这种效应的速率敏感地取决于应力张量算符时间平均的细节，这可能由势的形状等因素决定。我们对这种机制的势垒穿透速率作了一些估计，并认为在某些情况下，这个速率可以超过量子隧道穿透势垒的速率。讨论了观测这种效应的可能性。
We apply recent results on the probability distribution for quantum stress tensor fluctuations to the problem of barrier penetration by quantum particles. The probability for large stress tensor fluctuations decreases relatively slowly with increasing magnitude of the fluctuation, especially when the quantum stress tensor operator has been averaged over a finite time interval. This can lead to large vacuum radiation pressure fluctuations on charged or polarizable particles, which can in turn push the particle over a potential barrier. The rate for this effect depends sensitively upon the details of the time averaging of the stress tensor operator, which might be determined by factors such as the shape of the potential. We make some estimates for the rate of barrier penetration by this mechanism and argue that in some cases this rate can exceed the rate for quantum tunneling through the barrier. The possibility of observation of this effect is discussed.