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1. chinaXiv:201905.00050 [pdf]

基于单极感应问题的多极感应实验

张学亮
Subjects: Physics >> Electromagnetism, Optics, Acoustics, Heat Transfer, Classical Mechanics, and Fluid Dynamics

针对单极感应之谜,本文注意到磁力线是闭合线,利用洛伦茨力概念首先证明N与M两种对立观点都能够合理解释自法拉第时期以来典型的、有较大影响的单极感应实验。并采用等效电路和比较简明的方法推演出单极感应实验测量回路中感应电动势的一般表达式,说明单极感应问题至今未果的原因是实验采用的轴对称磁体外围磁场特殊的对称性分布结构,且分布结构不随磁体旋转而改变造成的。也说明单极感应实验本身无法解决单极感应问题。介绍了一种多极感应实验方案与实验结果,结合实验磁体外围磁场分布状况,同样用N与M两种观点对照分析了实验结果,得出了法拉第与韦伯当年的单极感应实验测量回路中的感应电动势是由磁体外相对于实验室参照系静止的线段产生的结论,该结论与M观点的结论一致。

submitted time 2019-05-08 Hits327Downloads27 Comment 0

2. chinaXiv:201904.00095 [pdf]

Real-Time Evolution of the Electron Clouds of Transition Metal Ions: Electron-Pairing Medium of Unconventional High Temperature Superconductors

Tege Zhou
Subjects: Physics >> Condensed Matter: Electronic Structure, Electrical, Magnetic, and Optical Properties

The electron-pairing mechanism in unconventional high temperature superconductors (HTS) has not been resolved. The author proposed that the electron-pairing medium of unconventional HTS is the change of the electron clouds of transition metal ions, which is analogous to the lattice vibration in conventional superconductors. Real-time evolution of the electron clouds of transition metal ions under excitations in La2Fe2As2O2, FeSe sheet, Fe2KSe2, CaCuO2, and HgBa2Ca2Cu3O8 was calculated by the time-dependent density functional theory (TDDFT). The characteristic frequency is about 90-250 meV, which is equivalent to the lattice vibration frequencies, showing that the change of the electron clouds of the transition metal ions can be the electron-pairing medium in unconventional HTS.

submitted time 2019-04-24 Hits178Downloads59 Comment 0

3. chinaXiv:201802.00685 [pdf]

An Explanation of the Interactions between Waves and Electrons: Discussion of Electromagnetic Fields

Weiye Xu
Subjects: Physics >> The Physics of Elementary Particles and Fields

The interactions between waves and electrons are the basis of vacuum tubes and particle accelerators. In order to further understand the interactions, we proposed a new electromagnetic model. In this model, the photon is composed of two elementary particles – ephoton and mphoton, which are the basic particles that form the electric fields and magnetic fields, respectively. There are many ephotons around the electrons and the electrons can absorb the ephotons. The proposed electromagnetic model can well explain the electromagetic phenomena and the interactions between waves and electrons.

submitted time 2019-04-12 Hits2647Downloads946 Comment 0

4. chinaXiv:201905.00054 [pdf]

多体多自由度量子隐形传态的张量表示

征夏明
Subjects: Physics >> General Physics: Statistical and Quantum Mechanics, Quantum Information, etc.

[目的] 找到一种最普遍情况下量子隐形传态的一般表示及代数结构。 [方法] 归纳推理与演绎推理,利用多项式相乘与张量积之间的等价性发现一般规律。 [结果] 将多体单自由度或单体多自由度的量子隐形传态推广至多体多自由度,以及混合态。 [局限] 无法推广至连续谱量子态。 [结论] 预言多体多自由度单次量子隐形传态的存在,并包含了已被实验证实的所有特殊情况。

submitted time 2019-04-11 Hits337Downloads18 Comment 0

5. chinaXiv:201905.00053 [pdf]

纠缠态判据与高阶张量可分性的充分必要条件

征夏明
Subjects: Physics >> General Physics: Statistical and Quantum Mechanics, Quantum Information, etc.

[目的] 找到高阶张量和纯态可写成多个低阶张量乘积的充要条件。 [方法] 类比推理、归纳推理,从多元函数可分离变量的充要条件出发,利用与矩阵的代数余子式的性质,最后得到一般的结论。 [结果] 证明定理及其多个等价形式。 [局限] 不适用于混合态。 [结论] 纯态是否是纠缠态的充要条件。

submitted time 2019-04-11 Hits332Downloads19 Comment 0

6. chinaXiv:201904.00075 [pdf]

A non-Lorentz transformation corresponding to the symmetry of inertial systems as an alternative to the rainbow model.pdf

胡锦文
Subjects: Physics >> Geophysics, Astronomy, and Astrophysics

在Lorentz破缺模型中,通常会讨论彩虹模型,因为彩虹模型可以使粒子的能量具有极限而不是与Lorentz变换相对应的具有无限值,而这在量子引力中被认为是必需的。然而,本文表明,当我们只是坚持时空是均匀的,空间是各向同性的并且所有惯性系统都是等价时,并没有必要将光速限制为常数。并且由于光速的变化,我们可以完全构造惯性系统的坐标变换,使粒子的能量有一个极限,而这与彩虹模型相同。 此外,在最近的论文中,作为超高能量尺度的测试,彩虹模型用于研究伽马射线爆,例如GRB 160509A事件,该事件强烈暗示光速随其能量变化的线性形式。所以我们也分析了这个事件,发现我们的模型和彩虹模型之间存在联系。最后,我们简要讨论了如何在超高能量级的未来粒子实验中验证这两个模型。

submitted time 2019-04-03 Hits294Downloads129 Comment 0

7. chinaXiv:201904.00071 [pdf]

湍流手性:可逆系统的平衡与非平衡有螺系综

朱建州
Subjects: Physics >> Electromagnetism, Optics, Acoustics, Heat Transfer, Classical Mechanics, and Fluid Dynamics
Subjects: Physics >> Geophysics, Astronomy, and Astrophysics

研究基于修改Navier-Stokes方程而得到可逆守恒系统的有螺湍流研究思路和理论。讨论三维可压缩湍流统计力学分析及螺度控制力热声问题。构建了一个非平衡系综的有螺可逆系统。最后简要讨论工程应用。

submitted time 2019-03-31 Hits367Downloads92 Comment 0

8. chinaXiv:201903.00191 [pdf]

等离子体非线性手性:有螺湍流态及呼吸子

陈鹏; 杨焱; 朱建州
Subjects: Physics >> Physics of Gases, Plasmas, and Electric Discharges
Subjects: Physics >> General Physics: Statistical and Quantum Mechanics, Quantum Information, etc.

等离子体湍流(如太阳风)中体现的(矢端图)螺旋现象和信号(近似)谐振现象并不一定表示线性波动行为。不同环境下等离子体可以有不同的动力学特征,容许存在各种非线性结构。这里讨论在一定时空范围内与线性螺旋波表现类似的有单手性主导的湍动涡模态和呼吸子。前者先通过回顾最近利用扩展磁流体模型统计解特征研究太阳风中的建议得以说明;后者的具体例证还是一个开放的问题,但是我们列举各种来自水波、等离子体和玻色-爱因斯坦凝聚的信息来说明太阳风中应该存在这样的结构。

submitted time 2019-03-31 Hits1320Downloads142 Comment 0

9. chinaXiv:201903.00190 [pdf]

Mathematical principle of m×n resistor networks

Tan Zhi-Zhong ; Tan Zhen
Subjects: Physics >> Interdisciplinary Physics and Related Areas of Science and Technology

The unified processing and research of multiple network models are implemented, and a new theoretical breakthrough is made, which sets up two new theorems on evaluating the exact electrical characteristics (potential and resistance) of the complex m×n resistor networks by the Recursion-Transform method with potential parameters (RT-V), applies to a variety of different types of lattice structure with arbitrary boundaries such as the nonregular m×n rectangular networks and the nonregular m×n cylindrical networks. Our research gives the analytical solutions of electrical characteristics of the complex networks (finite, semi-infinite and infinite), which has not been solved before. As applications of the theorems, a series of analytical solutions of potential and resistance of the complex resistor networks are discovered. In particular, three novel mathematical propositions are discovered when comparing the resistance in two resistor networks, and many interesting trigonometric identities are discovered as well.

submitted time 2019-03-12 Hits305Downloads122 Comment 0

10. chinaXiv:201903.00154 [pdf]

内蒙古入境旅游目的地竞争力空间格局特征 与影响因素

李文龙; 吕君; 王珊
Subjects: Physics >> General Physics: Statistical and Quantum Mechanics, Quantum Information, etc.

入境旅游作为我国文化传播与交流的重要载体对于我国文化建设与产业发展不可或缺;以内蒙古89个县域为研究对象,从资源吸引力、产业实力、接待组织能力三个维度构建评价框架与指标体系,运用模糊层次分析法、函数模型法、ArcGIS Voronoi图分析、障碍度模型等方法,对入境旅游竞争力进行研究。研究结论:(1)研究区入境旅游资源吸引力与产业实力呈现出西部高于东部,东部高于中部的空间格局,组织接待能力空间呈现破碎化特征。(2)竞争力呈现西部高于东部,东部高于中部的空间格局,且竞争力较强的县域多分布在内蒙古边缘区。(3)强竞争力与较强竞争力县域在呼和浩特、包头、鄂尔多斯和赤峰、通辽、锡林浩特形成两大竞争力集聚区。(4)准则层中障碍度指数由大到小排名为:旅游资源吸引力、产业实力、接待能力;指标层障碍度来看,位于前5名的单项指标分别是:旅游资源质量,旅游外汇收入,旅游经济联系强度,住宿餐饮业从业人员数量,国际旅行社数。(5)旅游资源吸引力与旅游组织接待能力相差悬殊是造成内蒙古入境旅游目的地旅游竞争力不平衡的主要原因,旅游产业实力差异加剧了竞争力的差异化。

submitted time 2019-03-07 From cooperative journals:《干旱区地理》 Hits1320Downloads106 Comment 0

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