大尺度有效引力理论与洛仑兹破缺

发布时间：2018-01-03 22:05

本文关键词：大尺度有效引力理论与洛仑兹破缺　出处：《科学通报》2017年09期 　论文类型：期刊论文

【摘要】：微波背景辐射的多普勒效应可能意味着在宇宙学尺度上洛仑兹boost不变性的破缺,假定洛仑兹对称性从星系尺度上开始部分破缺,以非常狭义相对理论模型的对称群为例,构造了其相应的规范理论作为大尺度上的有效引力理论,发现这些洛仑兹破缺的引力模型共同特征是即使物质源为普通标量物质时,时空挠率和contortion也一般不会为零,而广义相对论在这种情况下给出零挠率和零contortion,时空联络为Levi-Civita联络.非零contortion的存在贡献一个等效的能量动量张量分布,在星系乃至星系团尺度上的静态解中扮演暗物质角色,在宇宙学尺度上的类Roberson-Walker膨胀解中扮演暗物质与暗能量的角色,很可能会贡献一部分暗物质、暗能量效应.以Sim(2)为例,特别研究了其规范理论的自洽性,包括Maurer-Cartan方程在Sim(2)上的闭合性和以及由Jacobi恒等式在Sim(2)上导致的第一和第二Bianchi恒等式.
[Abstract]:The Doppler effect of microwave background radiation may imply the breaking of Lorentz boost invariance on cosmological scale, assuming that Lorentz symmetry is partially broken on galactic scale. Taking the symmetry group of the very narrow sense relative theory model as an example, the corresponding gauge theory is constructed as the effective gravity theory on a large scale. It is found that the common feature of these Lorentz broken gravitational models is that even if the source of matter is a normal scalar material, the space-time torsion and contortion are not generally zero. In this case, the general relativity gives zero torsion and zero contortion. The existence of non-zero contortion contributes to an equivalent energy momentum Zhang Liang distribution. It plays the role of dark matter in the static solution of galaxy and cluster scale, and plays the role of dark matter and dark energy in the Roberson-Walker expansion solution on cosmological scale. It is likely to contribute a part of dark matter, dark energy effect. Taking Siman 2) as an example, the self-consistency of its gauge theory is studied in particular. The first and second Bianchi identities caused by the Jacobi identities in Simian 2) are also discussed in this paper, including the closed properties of the Maurer-Cartan equation on Simian 2) and the first and second Bianchi identities caused by the Jacobi identities in Simian 2).
【作者单位】：华东师范大学物理系;"中央"研究院物理研究所;
【基金】：国家自然科学基金(11435005)资助
【分类号】：P159
【正文快照】： 随着狭义相对论的建立,一百多年来洛仑兹对称线和宇宙加速膨胀,比较流行的做法是用暗物质和暗性经历无数检验,成为物理学中最严格的对称性之一.能量解释天文观测对于广义相对论的偏离.但自然界所呈现出的现象却没有洛仑兹对称性,一方如果除了极早期宇宙,量子引力曾经起过作用,

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