arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1111.3903hep-th
收藏

作为暴胀残余的暗能量

Dark Energy as the Remnant of Inflation

H. M. Fried, Y. Gabellini

摘要:

一个基于量子电动力学的对称性破缺/自举机制,出现在足够小的时空距离,被认为是对真空能量的一种解释,真空能量提供了暴胀的初始动力,并一直持续到今天,提供了“暗能量“,这显然是迫使我们的宇宙分开。假设非常高频率的虚拟真空电流产生弱的有效电磁场,对应于有效的4-电势A_vac(x)的出现,其本身等于存在该A_vac(x)时算子A(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自己的参考系中测量相同的电场。在粒子能量达到10^5 TeV量级之前,这种有效的真空场与普通带电粒子的运动无关。该模型受到充分的约束,因此需要一个参数来拟合真空能量密度和暴胀开始和结束的相关时间,以及当今暗能量的那些参数。

英文摘要:

A QED-based symmetry breaking/bootstrap mechanism, appearing at sufficiently small space-time distances, is suggested as an explanation for the vacuum energy that furnished the initial impulse for Inflation, and continues on, to the present day, to provide the "Dark Energy" which is apparently forcing our Universe apart. Very high frequency virtual vacuum currents are assumed to generate weak, effective electromagnetic fields, corresponding to the appearance of an effective 4-potential A_vac (x), which is itself equal to the vacuum expectation value of the operator A(x) in the presence of that A_vac (x). Lorentz invariance is manifest, as every observer would measure the same electric field in his or her own reference frame. Such an effective vacuum field would have no relevance to the motion of ordinary charged particules until particle energies on the order of 10^5 TeV are possible. The model is sufficiently constrained so that one parameter is needed to fit the vacuum energy densities and relevant times for the onset and end of Inflation, as well as those parameters of present day Dark Energy.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑