论文标题
用悬浮的微型网络测试耗散崩溃模型
Testing Dissipative Collapse Models with a Levitated Micromagnet
论文作者
论文摘要
我们提出了基于具有超大耗散的悬浮的微型磁铁的自发波函数塌陷模型的耗散扩展的实验测试。半径$ r = 27 $ $ $ m m的球形微型网络在铅陷阱中以$ 4.2 $ k的含量悬浮，并由鱿鱼检测到其运动。我们在垂直转换模式下以$ 57 $ Hz的速度执行准确的响声测量值，并在消失压力$γ/2π<9 $ $ $ $ $ Hz时推断出残留阻尼。从这个上限，我们在CSL（连续自发定位）和DP（Diósi-Penrose）模型的耗散版本上得出了改进的界限，并具有适当的参考质量选择。特别是，耗散模型引起了隔离系统的固有阻尼，其效果由温度常数参数化。排除了低于1 nk的耗散CSL模型，而耗散DP模型的温度低于$ 10^{ - 13} $K。除了$ 10^{-13} $K。我们在最近的模型中介绍了耗散效应的第一范围，这将波动函数与波动崩溃的波动相关联，以波动的综合量为空位元素量化。
We present experimental tests of dissipative extensions of spontaneous wave function collapse models based on a levitated micromagnet with ultralow dissipation. The spherical micromagnet, with radius $R=27$ $μ$m, is levitated by Meissner effect in a lead trap at $4.2$ K and its motion is detected by a SQUID. We perform accurate ringdown measurements on the vertical translational mode with frequency $57$ Hz, and infer the residual damping at vanishing pressure $γ/2π<9$ $μ$Hz. From this upper limit we derive improved bounds on the dissipative versions of the CSL (continuous spontaneous localization) and the DP (Diósi-Penrose) models with proper choices of the reference mass. In particular, dissipative models give rise to an intrinsic damping of an isolated system with the effect parameterized by a temperature constant; the dissipative CSL model with temperatures below 1 nK is ruled out, while the dissipative DP model is excluded for temperatures below $10^{-13}$ K. Furthermore, we present the first bounds on dissipative effects in a more recent model, which relates the wave function collapse to fluctuations of a generalized complex-valued spacetime metric.
