论文标题
物质穿过虫洞
Matter traveling through a wormhole
论文作者
论文摘要
我们重新审视了Ellis-Bronnikov-Morris-Thorne虫洞的数值演变，这些虫洞是由无质量的真实幽灵标量场构建的。对于我们的模拟，我们根据时空的标准3+1叶叶制定了一个新代码。我们确认，对于无质量的对称虫洞，常规标量场的脉冲会导致虫洞喉咙塌陷并形成明显的视野，而幽灵标量场的脉冲可能导致虫洞喉咙膨胀。作为一个新结果，我们表明，常规物质的脉冲可以通过虫洞传播，然后在虫洞倒塌之前将光信号发送回。我们还进化了通过大规模不对称虫洞传播的物质的脉冲，以前尚未模拟。
We revisit the numerical evolution of Ellis-Bronnikov-Morris-Thorne wormholes, which are constructed with a massless real ghost scalar field. For our simulations, we have developed a new code based on the standard 3+1 foliation of spacetime. We confirm that, for the massless symmetric wormhole, a pulse of regular scalar field causes the wormhole throat to collapse and form an apparent horizon, while a pulse of ghost scalar field can cause the wormhole throat to expand. As a new result, we show that it is possible for a pulse of regular matter to travel through the wormhole and then to send a light signal back before the wormhole collapses. We also evolve pulses of matter traveling through massive asymmetric wormholes, which has not previously been simulated.
