cosmological constant 中文意思是什麼

cosmological constant 解釋
宇宙常數
  • cosmological : adj. 宇宙論的。
  • constant : adj 1 恆定不變的，固定的，穩定的，恆久的；繼續不斷的。2 不屈不撓的，堅韌的。3 忠實的，有節操的。n...
  1. A historical review of einstein ' s introduction of cosmological constant

    愛因斯坦引入宇宙常數的歷史評述
  2. Traditional energy - momentum pseudotensors revisited with a cosmological constant

    宇宙常數模型中傳統能動量贗張量的修正
  3. Both the cosmological constant and quintessence fall into the general category of dark energy

    不管是宇宙常數還是第五元素，都屬于暗能量的?疇。
  4. When the field is slowly - varying, the scalar field potential acts like a cosmological constant. in addition to the quintessence models, many other theories for dark energy have been proposed, including models based on super - symmetric gauge theories, super - gravity, small extra dimensions, large extra dimensions, quantum field theory effects in curved space - time. all these models are essentially based on the existence of a mass less scalar field acting at a cosmic scale

    除了真空場模型外，科學家亦提出其他解釋黑暗能量的理論，這些模型建基於不同的物理理論或假設，例如超對稱規范理論超重力增加一些小或大的空間維數量子力學在彎曲時空的影響等等，這些理論模型，返本溯源，其實背後都假設存在著一個特性類似於宇宙常數的無質量純量場。
  5. But, once we accept the reality of the cosmological constant as the dark energy, it would be important to find a physical interpretation for this quantity

    我們當然不甘於單單把黑暗能量等同於宇宙常數，對科學家來說，更重要的是要對黑暗能量的來源找一個合理的物理解釋。
  6. In this master dissertation, under the fundamental frame of general relativity, we study the tachyon inflation, d - stars in the spacetime with a nonzero cosmological constant and it ' s observable effects by using some modern mathematical methods such as differential equation and qualitative analysis

    本文以廣義相對論作為基本理論框架，使用微分方程及其定性理論，研究了宇宙演化和結構中的兩個問題，其中包括了快子暴漲，非零宇宙常數時空中的d星以及它的種種可觀測效應。
  7. In these contexts, the fields work because they are the simplest generalization of einstein ' s cosmological constant

    在這樣的情況下，由於純量場是愛因斯坦宇宙常數最簡化的歸納，因此它會產生作用。
  8. String theory, which unites gravity with quantum mechanics, offered the hope of explaining the attenuated cosmological constant

    統合重力及量子力學的弦論，似乎能為微小的宇宙常數提供一個合理解釋。
  9. This finding revealed that cosmological constant factor cannot be neglected. it represents a repelling force, which fuels the universe s expansion

    這個發現顯示宇宙常數不但不可忽略，它還造成一個排斥力，促使宇宙加速膨脹。
  10. In principle, physicists might like to examine one or a few vacua having the right cosmological constant to see if they offer testable predictions

    原則上，物理學家會想挑幾個有正確宇宙常數的真空來檢驗，看看它們是否做得出可試驗的預測。
  11. A first, and perhaps the most convincing candidate for the dark energy, is the cosmological constant, introduced by einstein in 1917 and later rejected by him

    黑暗能量其實很可能就是愛恩斯坦在1917年在引力方程中加入，但終被拋棄的宇宙常數。
  12. At last, we discuss the structure of d - stars in the spacetime with a nonzero cosmological constant. the metric and effective mass formula of d - stars have been educed

    本文的第三部分，主要討論了帶有非零宇宙常數時空中d星的結構，導出了它的度規和有效質量公式。
  13. The leading candidate to explain dark energy ' s effects is vacuum energy, which is mathematically equivalent to the cosmological constant that einstein invented in 1917

    要解釋暗能量效應的首選，便是真空能量，它與愛因斯坦在1917年所創的宇宙常數，在數學上是等價的。
  14. The cosmological constant is a mathematical representation of the energy of empty space, also known as " dark energy ", which exerts a kind of anti - gravity force pushing galaxies apart at an accelerating rate

    宇宙常數是空虛空間能量的數學描述，一般稱為黑暗能量，這種反引力促使星系彼此加速遠離。
  15. We find that the cosmic scale factor has the form of exponent inflation if the cosmological constant contributes to the positive material density, and the factor is composite function of cosine if the cosmological constant contributes to the negative material, furthermore, we gain the new formality of the pressure and the temperature in the procedure of cosmological evolution

    首次發現當宇宙學常數對物質密度的貢獻大於零時有指數復合函數的型得一般暴漲，當宇宙學常數對密度的貢獻小於零時宇宙有餘弦形式的演化。通過對宇宙中壓強和溫度的計算，得到新的壓強表達式和暴漲宇宙模型中溫度隨時間演化的表達式。
  16. It was not until 1929 did astronomer edwin p. hubble discovered the red shift of distant galaxies and thereby proved that the universe is expanding in all directions. when einstein heard and fully appreciated these observations, he declared that the inclusion of the cosmological constant was his " biggest blunder "

    直至一九二九年，天文學家哈勃通過觀測遙遠星系的紅移情況，證明宇宙正向四方八面不斷地膨脹，這時愛因斯坦才猛然自醒，甚至認為當初所提出的恆穩宇宙的結論是他一生中所犯下最愚笨的錯誤。
  17. Therefore the vacuum energy cannot be set to zero and it ought to be included as a source for gravitation, where it acts like the cosmological constant

    換言之，不可以把真空能量視為零，這種能量可視為一種引力源。特別的是，這種引力就好像液體一樣有負壓強，產生的排斥力相類于宇宙常數。
  18. How the universe evolves is affected by three factors, namely the mean density of mass - energy, the space - time curvature and a mysterious factor, the cosmological constant

    宇宙尺度的變化受三個因素影響：宇宙中質量-能量的平均密度宇宙的時空曲率與及一個神秘因素宇宙常數。
  19. The future of the universe is mainly determined by the mean density of mass - energy and the space - time curvature, while cosmological constant does not carry any weight among popular cosmological theories

    現在流行的宇宙論都不考慮宇宙常數，宇宙的未來完全由質量能量的平均密度及宇宙的時空曲率來決定。
  20. There are many reasons to consider dynamical dark energy as an alternative to a cosmological constant. first and foremost, it is a logical possibility which might be correct, and can be constrained by observation

    首先或許亦是最重要的，以物理學來說，以動態黑暗能量來取代宇宙常數在邏輯上是有一定道理的，這些理論亦可以觀測來驗證。
分享友人
分享到 Line

分享到臉書