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# Relativistic Spacetime Based On Absolute Background

Submit Time: 2022-02-04
Author:
Institute: 1.Hangzhou Normal University;

## Abstracts

 本文以物理学中标准钟和标准尺的定义实质和爱因斯坦的相对论物理为基础，从自然哲学层次出发讨论了物理的时空观。提出在已有的时空标度的概念基础上，应该进一步明确区分时空标度和时空背景。根据爱因斯坦相对论的实际逻辑可以作如下理解，满足相对论性变化的是时空标度，而时空标度是人为地根据物质实体中发生或存在的固有物理事件定义的，时空背景作为反映时空标度的长短或大小变化的必备基础和参考背景，应该是绝对的。空间标度的长短尺度在本质上应该理解为固有物理事件在空间的绝对背景上截取的线段的长度。最后以此时空观为基础，探讨了经典力学框架下的质点动力学方程，自然地得出了新形式的质点动力学方程。新动力学方程可以直接应用到任何实际的，（相对宇宙绝对背景）无转动的参考系中。而惯性力的本质正是作用到参考物体上的真实受力。这一经典质点动力学改造的本质是修正了牛顿第二定律传统体系中存在的一个理论缺陷。然而，可能更为重要的是，在形式上具备明显优越性的新质点动力学方程反过来强烈地暗示了时空背景的绝对性。文章最后结合广义相对论的引力几何化思想，探讨了引力对时空标度的物理效应。 [英文摘要]Based on the consideration of naturalness and physical facts in Einstein's theories of relativity, a nontrivial spacetime physical picture, which has a slight difference from the standard one, is introduced by making a further distinction on the absolute background of spacetime and the relative length or duration of base units of spacetime. In this picture, the coordinate base units in gravity-induced spacetime metric are defined by the standard clock and ruler equipped by the observer, and duplicated onto the every position of the whole universe. In contrast, the local intrinsic base units of spacetime in gravitational field are defined by the length and duration of physical events intervals in the same-type standard clock and ruler which are really located at every position of the universe. In principle, the reading number of the standard clock is counted by the undergone times of unit intervals defined depending on a certain kind of local intrinsic events. But the size of the base units of spacetime is essentially depicted by the length of the line segment, which is cut from the absolute background of spacetime by the local intrinsic events of unit interval. The effect of gravitation is just to change the length of this segment for base spacetime units. On the basis of such a physical picture of spacetime, in a fairly natural way we re-derive a new classical dynamical equation which satisfies a more realistic and moderately general principle of relativity. To further examine this physical picture including of gravitation and spacetime, we finally reinvestigate the physical picture of spacetime in cosmology and propose a more general and rensonable  form for cosmological metric.
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From: 陈驰一
DOI：10.12074/201610.00003
Recommended references： Chen， Chiyi.(2022).相对的时空标度和绝对的时空背景.[ChinaXiv:201610.00003] (Click&Copy)
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