cosmic string中文什么意思
【物理学】(大爆炸后形成的)宇宙带〔指能量的带状浓密集结〕。
例句与用法
- There are other models of dark energy besides those based on scalar fields . one scenario is " solid " dark matter , typically based on networks of tangled cosmic strings or domain walls
当然亦有些黑暗能量理论模型并未引入纯量场的观念，其中一个假设是实黑暗物质的存在，这些物质可以是纠结的宇宙弦网络或区域墙。 - Some think of cosmic string . then they soon realize that this will require the total energy from the universe to construct the time machine out of cosmic string and hence is also impossible . that leads to the suggestion by many scientists of the not - yet - proven " chronology protection conjecture " , which says that the laws of physics do not allow time machines to the past
在科普刊物中，我们间中便会听说有科学家提出回到过去的方法，但经详细研究后发现，所有这些方法都有很大的漏洞，例如有人曾经提出利用黑洞的近亲虫洞作为时光机，但这时光机只是单向：只能进入不能离开又有人曾利用宇宙弦作回到过去的工具，后来却发现需要全宇宙的能量才能建造那时光机，所以也是不可行的。 - Using the lagrangian at a finite temperature of the scalar field which can generate global cosmic string in the spontaneous breakdown , solved the gravitational field equation outside the core of a global cosmic string at the background of temperature , corrected the result in the theory at zero temperature . on the basis of this , the properties of the gravitational field outside the core of a global cosmic string are discussed
考虑温度效应，运用改写的能自发破缺产生整体宇宙弦的标量场在有限温度下的拉氏密度，求解了整体宇宙弦核外的引力场方程，对零温理论中的结果作了修正，进而讨论弦核外引力场的性质
英文释义
名词- (cosmology) a hypothetical one-dimensional subatomic particle having a concentration of energy and the dynamic properties of a flexible loop
同义词：string
百科释义
Cosmic strings are hypothetical 1-dimensional (spatially) topological defects which may have formed during a symmetry breaking phase transition in the early universe when the topology of the vacuum manifold associated to this symmetry breaking is not simply connected. It is expected that at least one string per Hubble volume is formed.
详细百科解释
