The expectation value of this distribution is given by the expression
该分布的期望值由如下表达式给出
One important exception is the vacuum energy or the vacuum expectation value of the energy.
其中一個重要的例外是真空能量或能量的真空期望值。
In quantum field theory and string theory, a generalization of coherent states to the case where infinitely many degrees of freedom are used to define a vacuum state with a different vacuum expectation value from the original vacuum.
在量子场论和弦理论中相干态被广义扩展到无限多自由度来定义与原真空的真空期望值不同的真空状态。
That is, if a measurement of a real -value quantity is performed many times, each time starting with the same initial conditions, the outcome is a well-defined probability distribution agreeing with the real numbers; moreover, quantum mechanics provides a computational instrument to determine statistical properties of this distribution, such as its expectation value.
即,若对一个实 值量测量多次,每次从同一初始状态开始,测量结果就是一个良定义的实数域上的概率分布 。 再者,量子力学提供了计算工具可以算出该分布的统计属性,比如期望值 。
In the survey of the international market, the clients' degree of trust (77%) for the traditional banks is higher than the expectation value (69%); in this context, the authority and safety established by Chinese banking industry for clients shall be improved.
在国际市场调查中,人们对传统银行的信任程度(77 % ) 要高于期望值(69 % ) , 从这一点来看,中国银行业在客户心中树立的权威性和安全性仍需提升。
The Casimir effect can be understood by the idea that the presence of conducting metals and dielectrics alters the vacuum expectation value of the energy of the second quantized electromagnetic field.
卡西米爾效應在理解上,可以看為金屬導體或介電材料的存在改變了真空二次量子化后電磁場能量的期望值。
In this paper, the approach angle of the collision between vehicle and concrete safety shape barrier(CSSis regarded as a random variable, a new concept of occupant risk expectation value (OREV) is put forward. Its influence on the design and optimization of CSSB is illustrated an example.
针对道路交通的实际情况 ,将车辆与混凝土护栏碰撞时车辆的入侵角视为具有一定概率分布的随机变量 ,提出了用于评估车辆与交通安全护栏碰撞过程中乘员风险的新概念 - 乘员风险期望值 ,并以一个优化算例简要说明了新概念对混凝土护栏安全性能评估的影响。
As a result, the universe is permeated by a nonzero Higgs vacuum expectation value (VEV).
因此,宇宙中弥散了非零的希格斯真空期望值 。
In survey, except the same expectation value and trust value for the traditional banks, clients' trust value for other institutions is lower than the expectation value; clients still doubt about the sharing financial data.
在调查中,客户除对传统银行的期望值和信任值相同外,客户对各机构的信任值均低于期望值,对于共享金融数据,客户仍然心存疑虑。
The economic element covers a wide range of financial or other material benefits or losses, including in the form of tangible property, financial or other interests, and less tangible losses, such as exposure to risk or loss of expectation value, even if these do not materialize.
经济要件涵盖多种经济或其他物质上的利得或损失,包括有形财产、经济利益或其他利益,以及有形程度较低的损失,如面临风险或丧失期望价值,即使这些并未实现。
The expectation value of a variable is the mean of the possible experimental results weighted by their probability of occurrence.
(期望价值的变量是指可能的实验结果加权其发生的可能性。
Von Neumann had illegitimately extended to his putative hidden variables a result from the variables of quantum theory that the expectation value of A + B is equal to the sum of the expectation values of A and of B.
冯诺依曼非法延长了他的推测隐藏的变量结果的变量量子理论的预期值 + B是 相等的总和期望的 价值观和的 B 。
In the Standard Model, the non-zero vacuum expectation value of the Higgs field, arising from spontaneous symmetry breaking, is the mechanism by which the other fields in the theory acquire mass.
在标准模型中,由自发对称破缺引起的希格斯场的非零真空期望值是理论中其他场获得质量的机制。