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arXiv 1303.4529hep-th
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QED真空回路和暗能量

QED Vacuum Loops and Dark Energy

H. M. Fried, Y. Gabellini

备注：
12 pages, 1 figure. arXiv admin note: text overlap with arXiv:hep-th/0310095, arXiv:hep-th/0303108
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摘要：

一个基于QED的“自举”机制被认为是对真空能量的一种解释，真空能量提供了暴胀的最初动力，并继续提供了今天的暗能量。假设虚真空涨落产生有效电磁场，其平均值对应于有效c数$A_μ^{\rm vac}(x)$，该有效c数本身等于存在该$A_μ^{\rm vac}(x)$时算子$A_μ(x)$的真空期望值。洛仑兹不变性是显而易见的，因为每个观察者都会在他或她自己的参考系中测量相同的电场。该模型具有一个任意的参数$ξ$，并拟合了$ξ\sim O(1)$的当今暗能量的能量密度。

英文摘要：

A QED--based "bootstrap" mechanism is suggested as an explanation for the vacuum energy that furnished the initial impulse for Inflation, and continues on to provide present day Dark Energy. Virtual vacuum fluctuations are assumed to generate effective electromagnetic fields whose average value corresponds to an effective c--number $A_μ^{\rm vac}(x)$, which is itself equal to the vacuum expectation value of the operator $A_μ(x)$ in the presence of that $A_μ^{\rm vac}(x)$. Lorentz invariance is manifest, as every observer would measure the same electric field in his or her own reference frame. The model has one arbitrary parameter $ξ$, and fits the energy density of present day Dark Energy for $ξ\sim O(1)$.

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