Analog cosmology with two-fluid systems in a strong gradient magnetic field.
Analog cosmology with two-fluid systems in a strong gradient magnetic field.
复制标题
强梯度磁场中双流体系统的模拟宇宙学。
DOI:
10.1103/physreve.99.031101
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发表时间:
2019
期刊:
影响因子:
--
通讯作者:
Fifer Z
中科院分区:
文献类型:
--
作者:
Fifer Z
We propose an experiment combining fluid dynamics and strong magnetic field physics to simulate cosmological scenarios. Our proposed system consists of two immiscible, weakly magnetized fluids moved through a strong gradient magnetic field. The diamagnetic and paramagnetic forces thus generated amount to a time-dependent effective gravity, which allows us to precisely control the propagation speed of interface waves. Perturbations on the interface therefore experience a nonstationary effective metric. In what follows, we demonstrate that our proposed system is capable of simulating a variety of cosmological models. We then present a readily realizable experimental setup which will allow us to capture the essential dynamics of standard inflation, wherein interface perturbations experience a shrinking effective horizon and are shown to transition from oscillatory to frozen and squeezed regimes at horizon crossing.
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