MODELS FOR UNIVERSAL REDUCTION OF MACROSCOPIC QUANTUM FLUCTUATIONS
MODELS FOR UNIVERSAL REDUCTION OF MACROSCOPIC QUANTUM FLUCTUATIONS
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DOI：
10.1103/physreva.40.1165
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发表时间：
1989-08-01
影响因子：
2.9
通讯作者：
DIOSI, L
中科院分区：
文献类型：
--
作者：
DIOSI, L
本文采用这样的假设，即宏观量子涨落的存在是由于某种普适机制。这种机制最近由Ghirardi等人提出[phys.Rev.D34,470(1986)]，在这里我们扼要地回顾一下它的简明版本。[Nuovo cimento 52,390(1966)]早些时候展示了重力的可能作用，沿着这条线，我们在这里构建了一个新的无参数的微观和宏观动力学的统一。我们应用引力措施来减少质量密度的宏观量子涨落。这一模型导致了平移运动宏观极限中的经典轨迹。对于大质量物体，不需要的量子态宏观叠加在很短的时间内就会被摧毁。文中还讨论了态矢量与密度算符形式之间的关系。我们只预计需要在区分微观和宏观性质的区域内详细阐述模型的特征预测。
This paper adopts the hypothesis that the absence of macroscopic quantum fluctuations is due to a certain universal mechanism. Such a mechanism has recently been proposed by Ghirardi et al.[Phys. Rev. D 34, 470 (1986)], and here we recapitulate a compact version of it. Károlyházy [Nuovo Cimento 52, 390 (1966)] showed earlier the possible role of gravity and, along this line, we construct here a new parameter-free unification of micro-and macrodynamics. We apply gravitational measures for reducing macroscopic quantum fluctuations of the mass density. This model leads to classical trajectories in the macroscopic limit of translational motion. For massive objects, unwanted macroscopic superpositions of quantum states become destroyed in very short times. The relation between state-vector and density-operator formalisms has also been discussed. We only anticipate the need for elaborating characteristic predictions of the model in the region separating micro-and macroscopic properties.