论文标题
当量子校正改变标量场暗物质的经典场理论的预测
When quantum corrections alter the predictions of classical field theory for scalar field dark matter
论文作者
论文摘要
我们研究了量子校正的时间尺度改变了标量场暗物质的经典场理论的预测。这是通过在与现场运营商的协方差成正比的演化中包含二阶项来实现的。当这种协方差与平均野外价值相比不再小时，我们说该系统已经达到``量子休息时间''，并且经典田间理论的预测将与完整量子理论的预测开始有所不同。虽然将经典的现场理论进化固定固定固定固定。我们确定了基于量子的数字$ nokection $。 $ n = 256 $。即使在$ n_ {tot} \ sim 10^{100} $的职业中，动态时间也是如此。
We investigate the timescale on which quantum corrections alter the predictions of classical field theory for scalar field dark matter. This is accomplished by including second order terms in the evolution proportional to the covariance of the field operators. When this covariance is no longer small compared to the mean field value, we say that the system has reached the ``quantum breaktime" and the predictions of classical field theory will begin to differ from those of the full quantum theory. While holding the classical field theory evolution fixed, we determine the change of the quantum breaktime as total occupation number is increased. This provides a novel numerical estimation of the breaktime based at high occupations $n_{tot}$ and mode number $N=256$. We study the collapse of a sinusoidal overdensity in a single spatial dimension. We find that the breaktime scales as $\log(n_{tot})$ prior to shell crossing and then then as a powerlaw following the collapse. If we assume that the collapsing phase is representative of halos undergoing nonlinear growth, this implies that the quantum breaktime of typical systems may be as large as $\sim 30$ of dynamical times even at occupations of $n_{tot}\sim 10^{100}$.
