D-泡沫现象学：暗能量、光速和可能的D-虚空
D-Foam Phenomenology: Dark Energy, the Velocity of Light and a Possible D-Void
摘要：
在时空泡沫的D膜模型中，存在对暗能量的贡献，其依赖于D膜速度和D粒子缺陷的密度。后者也可能使光子的速度与其能量呈线性关系，从而与天体物理学探测光速的普遍性建立了现象学联系。具体来说，宇宙学的暗能量密度测量在目前的时代可能与从附近活动星系核传播的高能光子的明显延迟。然而，“D-泡沫现象学”这个新兴领域可能会因D-粒子密度对宇宙学时代的依赖而变得复杂。红移z ~ 1处D粒子密度的降低--“D空隙”--将增加暗能量，同时抑制真空折射率，从而可能使活动星系核的测量结果与费米卫星测量到的从GRB 090510传播的高能光子相对较小的延迟相一致。
英文摘要：
In a D-brane model of space-time foam, there are contributions to the dark energy that depend on the D-brane velocities and on the density of D-particle defects. The latter may also reduce the speeds of photons linearly with their energies, establishing a phenomenological connection with astrophysical probes of the universality of the velocity of light. Specifically, the cosmological dark energy density measured at the present epoch may be linked to the apparent retardation of energetic photons propagating from nearby AGNs. However, this nascent field of `D-foam phenomenology' may be complicated by a dependence of the D-particle density on the cosmological epoch. A reduced density of D-particles at redshifts z ~ 1 - a `D-void' - would increase the dark energy while suppressing the vacuum refractive index, and thereby might reconcile the AGN measurements with the relatively small retardation seen for the energetic photons propagating from GRB 090510, as measured by the Fermi satellite.
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。
