论文标题
将原始引力波挤压为量子不和谐
Squeezing of primordial gravitational waves as quantum discord
论文作者
论文摘要
我们研究了原始重力波（PGWS）的挤压。我们在没有量子不和谐的情况下构建了PGW的经典状态，并将其与Bunch-Davies真空进行比较。然后表明，PGWS引起的宇宙微波背景（CMB）波动的角动力谱的振荡行为可以是PGWS量子不一调的签名。此外，我们讨论了量子反应对超级马模式的纠缠和量子不和谐的影响。对于具有破坏性效应的PGW状态，我们检查了C. Kiefer等人引入的退积条件和相关条件。 （类。量子坟墓24（2007）1699）。我们表明，变质条件不足以使PGW的可分离性，相关条件意味着在物质主导的时代中的PGW具有量子不一致。
We investigate the squeezing of primordial gravitational waves (PGWs) in terms of quantum discord. We construct a classical state of PGWs without quantum discord and compare it with the Bunch-Davies vacuum. Then it is shown that the oscillatory behavior of the angular-power spectrum of the cosmic microwave background (CMB) fluctuations induced by PGWs can be the signature of the quantum discord of PGWs. In addition, we discuss the effect of quantum decoherence on the entanglement and the quantum discord of PGWs for super-horizon modes. For the state of PGWs with decoherence effect, we examine the decoherence condition and the correlation condition introduced by C. Kiefer et al. (Class. Quantum Grav. 24 (2007) 1699). We show that the decoherence condition is not sufficient for the separability of PGWs and the correlation condition implies that the PGWs in the matter-dominated era have quantum discord.
