论文标题
直流阵列中的类似于非因果的无效曲线和年代保护
Analogue non-causal Null Curves and Chronology protection in a dc-SQUID Array
论文作者
论文摘要
我们提出了一个1+1 d时空的模拟量子模拟器，其中包含非cus曲线，特别是通过嵌入开放式超导传输线上的DC-Squid阵列，尤其是及时回到及时的null Geodesics。这是通过模仿度量标准的空间依赖性与模拟器中电磁场的传播速度的空间依赖性来实现的，该模拟器可以通过外部磁通量调节。我们表明，有可能模拟包含非毒物无效测量学的时空区域，而不是一个完整的时空，该时期包含具有非毒物无效的无零地测量学区域和没有它们的区域的时间表范围。这与Barceló等人的最新建议对模拟重度年代保护机制的建议一致。
We propose an analogue quantum simulator of a 1+1 D spacetime containing non-causal curves,in particular, null geodesics going back in time, by means of a dc-SQUID array embedded on an open superconducting transmission line. This is achieved by mimicking the spatial dependence of the metric with the propagation speed of the electromagnetic field in the simulator, which can be modulated by an external magnetic flux. We show that it is possible to simulate a spacetime region containing non-causal null geodesics, but not a full spacetime containing a chronological horizon separating regions with non-causal null geodesics and regions without them. This is in agreement with a recent suggestion of analogue-gravity chronology protection mechanism by Barceló et al.
