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arXiv 1708.09007quant-ph
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对“相对论量子信息中的维格纳旋转和一个表观佯谬“一文的答复

Reply to Comment on "Wigner rotations and an apparent paradox in relativistic quantum information"

Pablo L. Saldanha, Vlatko Vedral

摘要:

正如Lanzagorta和Crowder在他们的评论[Phys. Rev. A 96,026101(2017)]中所示,维格纳旋转对两个大质量相对论粒子的量子态的线性应用并不需要我们在论文[Phys. Rev. A 87,042102(2013)]中得出的信息的瞬时传输。但在arXiv [arXiv:1303.4367v2]中我们的论文的新版本中,我们展示(并解决)了另一个悖论,它是由维格纳旋转线性应用于具有单个相对论性粒子的系统而产生的。因此,我们的结论,即如果不考虑适当的物理解释,我们不能在一般情况下将维格纳旋转线性地应用于相对论粒子的量子态,仍然是有效的,尽管该论文中提出的悖论是不适当的。

英文摘要:

As Lanzagorta and Crowder have shown in their Comment [Phys. Rev. A 96, 026101 (2017)], the linear application of the Wigner rotations to the quantum state of two massive relativistic particles does not entail the instantaneous transmission of information as we concluded in our paper [Phys. Rev. A 87, 042102 (2013)]. But in the new version of our paper in arXiv [arXiv:1303.4367v2] we show (and solve) another paradox that is generated by the linear application of the Wigner rotations to a system with a single relativistic particle. So the conclusion of our paper that we cannot in general linearly apply the Wigner rotations to the quantum state of a relativistic particle without considering the appropriate physical interpretation is still valid, although the paradox presented in that paper is inappropriate.

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