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arXiv 2209.01008gr-qcastro-ph.GA
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真空极化代替星系中的“暗物质“

Vacuum polarization instead of "dark matter" in a galaxy

Sergey L. Cherkas, Vladimir L. Kalashnikov

摘要:

在程函近似下,我们考虑了星系内部的真空极化,发现存在两种可能的极化类型。第一种类型由状态方程$p=ρ/3$描述,类似于辐射。如果在星系的中心存在一个紧凑的天体物理学物体,那么使用保形么模度量可以为这个真空“物质”构造一个非奇异的解。结果,一个“黑暗”的银河晕出现了,它增加了测试粒子的旋转速度,作为离银河中心距离的函数。第二种类型的真空极化具有更复杂的状态方程。作为一种静态的物理效应,它产生了引力常量的重整化,因此不会产生静态晕。然而,第二种类型的非定常极化,由于星系核质量随时间的指数增加(或减少),在一些假设的时间相关的过程中,产生的引力势看起来像一个暗物质晕。

英文摘要:

We considered a vacuum polarization inside a galaxy in the eikonal approximation and found that two possible types of polarization exist. The first type is described by the equation of state $p=ρ/3$, similar to radiation. Using the conformally-unimodular metric allows constructing a nonsingular solution for this vacuum ``substance'', if a compact astrophysical object exists in the galaxy's center. As a result, a ``dark'' galactical halo appears that increases the rotation velocity of a test particle as a function of the distance from a galactic center. The second type of vacuum polarization has a more complicated equation of state. As a static physical effect, it produces renormalization of the gravitational constant, thus, causing no static halo. However, a nonstationary polarization of the second type, resulting from an exponential increase (or decrease) of the galactic nuclei mass with time in some hypothetical time-dependent process, produces a gravitational potential looking like a dark matter halo.

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。

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