论文标题
通过标量场和物质之间的一对损坏对称夫妇获得标量的第五力
Obtaining a scalar fifth force via a broken-symmetry couple between the scalar field and matter
论文作者
论文摘要
当满足当前宇宙常数的约束时，出现了物质耦合的标量场模型。标量场和物质之间的相互作用势能密度具有两种潜在孔的对称形式。事实证明，宇宙常数是标量场的自我相互作用势能密度的值，这是有效依赖物质密度势能密度的最小值。有效潜力是标量场的相互作用潜力和自我交互潜力的总和。标量场可以稳定地位于最小值，然后时间依赖性的宇宙学“常数”表现得像常数。观察到的宇宙加速度可以考虑到标量场。在宇宙的通货膨胀时代，标量领域也被推算出来以说明通货膨胀。在这个时代，液体是相对论的，然后相互作用的潜在井消失了。因此，无限制的典型占主导地位的宇宙演变。结论是，“普朗克2018年结果”有利于宇宙的封闭空间。原因不仅是当前哈勃常数的测量值，而且是单场通货膨胀模型框架中凹势的观察到的特征。通过在通货膨胀时代调用伪电势，尽管自我交互势是凸函数，但凹形特征可以归因于伪电势。伪电势是由宇宙曲率的自我交互潜力和能量密度尺度的总和来定义的。正是正曲率导致伪电势的凹形特征。
A matter-coupled scalar field model is presented in obtaining a scalar fifth force when the constraint of the current cosmological constant is satisfied. The interaction potential energy density between the scalar field and matter has a symmetry-breaking form with two potential wells. The cosmological constant is proven to be a value of the scalar-field's self-interaction potential energy density at the minimum of an effective matter-density-dependent potential energy density. The effective potential is a sum of the interaction potential and the self-interaction potential of the scalar field. The scalar field can stably sit at the minimum and then the time-dependent cosmological `constant' behaves like a constant. The observed cosmic acceleration can be accounted for the scalar field. The scalar field is also extrapolated to account for inflation at the inflationary era of the Universe. In this era matter fluid is relativistic and then the interaction potential wells vanish. The unconfined quintessence therefore dominates the evolution of the Universe. It is concluded that `Planck 2018 results' favour the closed space of the Universe. The reasons are not only the measured value of the current Hubble constant, but also the observed feature of a concave potential in the framework of single-field inflationary models. By invoking a pseudo-potential in the inflationary era, the concave feature can be attributed to the pseudo-potential although the self-interaction potential is a convex function. The pseudo-potential is defined by a sum of the self-interaction potential and the energy density scale of the curvature of the Universe. It is that the positive curvature leads to the concave feature of the pseudo-potential.
