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首页> 外文期刊>Journal of physics, A. Mathematical and theoretical >Information travels in massless fields in 1+1 dimensions where energy cannot
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Information travels in massless fields in 1+1 dimensions where energy cannot

机译：信息以1 + 1维无法传播的无质量场传播

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摘要

It has been demonstrated that, in 1+1. spacetime dimensions, massless fields can be used for information transmission even between parties that are time-like rather than light-like separated-and even without the receiver obtaining any energy from the sender. Here, it is shown that this phenomenon is not limited to a particular model of signaling device, but is based on general properties of the quantum field: energy propagates strictly only on the light-cone, whereas perturbations to the field amplitude, which can carry information, also. permeate. the inside of the future lightcone of the sender. It is also shown that this time-like and energyless signaling in massless fields occurs in Dirichlet cavities, which shows that the phenomenon is not confined to setups with a zero mode. Moreover, it is shown that the phenomenon extends beyond perturbation theory, namely by deriving the phenomenon non-perturbatively for the case where the sender and receiver systems are modeled as harmonic oscillators. To illustrate the propagation of energy in massless fields, the energy density that results from temporarily coupling an Unruh-DeWitt detector at rest to the vacuum of the field is calculated.
机译：已经证明，在1 + 1。时空维度，无质量的字段甚至可以用于时间间隔的各方之间的信息传输，而不是像光一样的间隔之间，甚至在接收方没有从发送方获取任何能量的情况下也可以用于信息传输。在此表明，这种现象不仅限于信号装置的特定模型，还基于量子场的一般特性：能量仅在圆锥上严格传播，而对场振幅的扰动则可以携带信息，也。渗透。发送者未来的光锥内部。还表明，在无质量场中，这种类似时间的无能信号发生在狄利克雷腔中，这表明该现象不限于零模设置。此外，表明该现象超出了扰动理论，即通过将发送方和接收方系统建模为谐波振荡器的情况非扰动地推导该现象。为了说明能量在无质量场中的传播，计算了将静止的Unruh-DeWitt检测器暂时耦合到场的真空所产生的能量密度。

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