期刊文献+
共找到31篇文章
< 1 2 >
每页显示 20 50 100
On Maxwell-Lorentz Equations in Dirac’s Symmetrisation and Their Analogs for Gravitation and Space-Time
1
作者 Lorenzo Fassina 《Journal of Electromagnetic Analysis and Applications》 CAS 2022年第6期65-80,共16页
In further discussion on the Maxwell-Lorentz equations in Dirac’s symmetrisation, I introduce the concept of magnetic monopole as an “act of electric current” in the 2<sup>nd</sup> equation (i.e. the an... In further discussion on the Maxwell-Lorentz equations in Dirac’s symmetrisation, I introduce the concept of magnetic monopole as an “act of electric current” in the 2<sup>nd</sup> equation (i.e. the analog of the “act of movement” in Classical Mechanics), I postulate a “magnetic displacement current” and a “magnetomotive force” in the 3<sup>rd</sup> and 4<sup>th</sup> equations, respectively (i.e. the analogs of the “electric displacement current” and of the “electromotive force” in the 4<sup>th</sup> and 3<sup>rd</sup> equations, respectively). As a consequence, I propose a generalised vision of the Electromagnetism in which inhomogeneous, microscopic, and relativistically linked equations describe the static and the oscillatory phenomena. Then, in the frame of Relativity, I propose analog microscopic equations to study the Gravitation and the Space-Time in terms of static and oscillatory phenomena: the static equations show the sources of newly defined vector fields (the generalised mass density as the source of the generalised mass field, the generalised time density as the source of the generalised space field, respectively), whereas the oscillatory equations describe the propagation of the gravitational waves and of the spatiotemporal waves, respectively. In other words, I propose to unify Electromagnetism, Gravitation, and Space-Time in terms of microscopic Maxwell-Lorentz-like equations in Dirac’s symmetrisation, where the unifying trait is c. Finally, using the concepts of the proposed generalised Electromagnetism, I discuss the conservation in Electromagnetism and the interaction between matter and electromagnetic waves. 展开更多
关键词 Maxwell-Lorentz Equations dirac’s symmetrisation GRAVITATION sPACE-TIME
下载PDF
Reciprocity Relation between Alternative Gravity Formulas
2
作者 Hans Hermann Otto 《Journal of Applied Mathematics and Physics》 2024年第4期1432-1440,共9页
We compare Newton’s force law of universal gravitation with a corrected simple approach based on Bhandari’s recently presented work, where the gravitation constant G is maintained. A reciprocity relation exists betw... We compare Newton’s force law of universal gravitation with a corrected simple approach based on Bhandari’s recently presented work, where the gravitation constant G is maintained. A reciprocity relation exists between both alternative gravity formulas with respect to the distances between mass centers. We conclude a one-to-one mapping of the two gravitational formulas. We don’t need Einstein’s construct of spacetime bending by matter. 展开更多
关键词 Gravity Formulas Reciprocity Distance Relation NEWTON EINsTEIN Bhandari Higgs Field dirac’s Large Number
下载PDF
单位矩阵的平方根与Dirac and Klein-Gordon方程组(英)
3
作者 黄乘规 《常州工学院学报》 2001年第2期9-16,共8页
此文是常州工业技术学院学报已经刊登的文章[5]的继续,包含有以下三方面的新结果。1.找出了单位矩阵的所有平方根。2.构造了Dirac方程初值问题的解。3.偶然发现了一些与Dirac方程的解有关的矩阵是4×4单位矩阵的一种特殊形式的平方... 此文是常州工业技术学院学报已经刊登的文章[5]的继续,包含有以下三方面的新结果。1.找出了单位矩阵的所有平方根。2.构造了Dirac方程初值问题的解。3.偶然发现了一些与Dirac方程的解有关的矩阵是4×4单位矩阵的一种特殊形式的平方根。此外本文利用Klein-Gordon算子分解为Dirac算子的平方的分解式给出了以下的两个注解:(1)Dirac方程的相对论不变性只是Klein-Gordon方程的相对论不变性的推论。(2)Dirac方程的基本解特征矩阵或解向量组是Klein-Gordon方程的解张量。最后也是最重要的,我们得到了一个新的公式(9.15)去计算量子力学中的S矩阵。 展开更多
关键词 单位矩阵 平方根 半单矩阵 特征空间 常微分方程方法 dirac方程 KLEIN-GORDON方程
下载PDF
The N-mode squeezed state with enhanced squeezing 被引量:2
4
作者 徐学翔 胡利云 范洪义 《Chinese Physics B》 SCIE EI CAS CSCD 2009年第12期5139-5143,共5页
It is known that exp [iA (Q] P1 - i/2)] is a unitary single-mode squeezing operator, where Q1, P1 are the coordinate and momentum operators, respectively. In this paper we employ Dirac's coordinate representation t... It is known that exp [iA (Q] P1 - i/2)] is a unitary single-mode squeezing operator, where Q1, P1 are the coordinate and momentum operators, respectively. In this paper we employ Dirac's coordinate representation to prove that the exponential operator Sn ≡exp[iλi=1∑n(QiPi+1+Qi+1Pi))],(Qn+1=Q1,Pn+1=P1),is an n-mode squeezing operator which enhances the standard squeezing. By virtue of the technique of integration within an ordered product of operators we derive Sn's normally ordered expansion and obtain new n-mode squeezed vacuum states, its Wigner function is calculated by using the Weyl ordering invariance under similar transformations. 展开更多
关键词 diracs representation integration within an ordered product technique squeezing enhanced operator squeezed sate
下载PDF
Photonic Gravitational Interactions from a Quantum Point of View 被引量:2
5
作者 Jose L. Parra 《Optics and Photonics Journal》 2021年第1期12-21,共10页
A hypothesis explaining the diffraction and interference of light from a pure corpuscular point of view was published in 2018. The author developed the idea by a fortunate combination of intuition and statistics but f... A hypothesis explaining the diffraction and interference of light from a pure corpuscular point of view was published in 2018. The author developed the idea by a fortunate combination of intuition and statistics but failed to justify it theoretically. This vagueness can be amended by using relativistic invariants. Adapting Dirac’s equation to gravitational potentials acting over photons yields most of the properties of light. A complete characterization of the properties of light arriving from distant galaxies was performed by modeling the coherence of light. It was assumed that the coherence of light is generated by two orthogonal potentials. Here an idea explains the cosmological redshift data as is done by the combination of Big-Bang, acceleration, and deceleration trilogy. 展开更多
关键词 Hubble’s Constant Relativistic Invariants dirac’s Equation COsMOLOGY REDsHIFT
下载PDF
Analysis of Maxwell’s Equations. Cosmic Magnetism 被引量:3
6
作者 Vladimir S. Netchitailo 《Journal of High Energy Physics, Gravitation and Cosmology》 2018年第1期1-7,共7页
According to Hypersphere World-Universe Model, dark matter particles DIRACs are magnetic dipoles consisting of two Dirac’s monopoles. We conclude that DIRACs are the subject of Maxwell’s equations. So-called “auxil... According to Hypersphere World-Universe Model, dark matter particles DIRACs are magnetic dipoles consisting of two Dirac’s monopoles. We conclude that DIRACs are the subject of Maxwell’s equations. So-called “auxiliary” magnetic field intensity H is indeed current density of magnetic dipoles. The developed approach to magnetic field can explain a wealth of discovered phenomena in Cosmic Magnetism: a dark magnetic field, the large-scale structure of the Milky Way’s magnetic field, and other magnetic phenomena which are only partly related to objects visible in other spectral ranges. 展开更多
关键词 HYPERsPHERE World-Universe Model Maxwell’s Equations dirac’s Monopole MAGNETIC Dipole MAGNETIC FIELD Intensity MAGNETIC DIPOLEs Current Density COsMIC MAGNETIsM Dark MAGNETIC FIELD
下载PDF
微分形式中的非齐次Dirac-调和方程解的若干不等式
7
作者 戴志敏 刘三阳 《数学杂志》 2020年第3期267-282,共16页
本文研究了与微分形式中一类非齐次的Dirac-调和方程解相关的不等式问题.利用非齐次的Dirac-调和方程的条件和Dirac-调和算子D的运算法则,获得了Poincare不等式,Caccioppoli不等式和弱逆Holder不等式.作为相关不等式的应用,证明了Poinc... 本文研究了与微分形式中一类非齐次的Dirac-调和方程解相关的不等式问题.利用非齐次的Dirac-调和方程的条件和Dirac-调和算子D的运算法则,获得了Poincare不等式,Caccioppoli不等式和弱逆Holder不等式.作为相关不等式的应用,证明了Poincare不等式赋特殊权和在L^s(μ)平均域上的形式.本文的研究将齐次Dirac-调和方程解的相关不等式推广到了对应该方程非齐次的情形. 展开更多
关键词 非齐次dirac-调和方程 微分形式 范数不等式 L^s(μ)-平均域
下载PDF
Dark Matter and the Energy-Momentum Relationship in a Hydrogen Atom 被引量:1
8
作者 Koshun Suto 《Journal of High Energy Physics, Gravitation and Cosmology》 2020年第1期52-61,共10页
Einstein derived the energy-momentum relationship which holds in an isolated system in free space. However, this relationship is not applicable in the space inside a hydrogen atom where there is potential energy. Ther... Einstein derived the energy-momentum relationship which holds in an isolated system in free space. However, this relationship is not applicable in the space inside a hydrogen atom where there is potential energy. Therefore, in 2011, the author derived an energy-momentum relationship applicable to the electron constituting a hydrogen atom. This paper derives that relationship in a simpler way using another method. From this relationship, it is possible to derive the formula for the energy levels of a hydrogen atom. The energy values obtained from this formula almost match the theoretical values of Bohr. However, the relationship derived by the author includes a state that cannot be predicted with Bohr’s theory. In the hydrogen atom, there is an energy level with n = 0. Also, there are energy levels where the relativistic energy of the electron becomes negative. An electron with this negative energy (mass) exists near the atomic nucleus (proton). The name “dark hydrogen atom” is given to matter formed from one electron with this negative mass and one proton with positive mass. Dark hydrogen atoms, dark hydrogen molecules, other types of dark atoms, and aggregates made up of dark molecules are plausible candidates for dark matter, the mysterious type of matter whose true nature is currently unknown. 展开更多
关键词 Einstein’s ENERGY-MOMENTUM RELATIONsHIP Classical Quantum Theory Ultra-Low Energy Levels dirac Relativistic Wave Equation DARK Matter DARK Hydrogen TRIPLET Production
下载PDF
静态球对称荷电黑洞Dirac场的Planck绝对熵
9
作者 张朝俊 李传安 《菏泽师专学报》 2004年第2期5-8,共4页
利用膜模型技术 ,研究静态球对称荷电黑洞Dirac场的Planck绝对熵 .结果表明静态球对称荷电黑洞的Planck绝对熵与内、外视界面积的代数和成正比 .
关键词 黑洞 Planck绝对熵 dirac方程 brick—wall膜模型
下载PDF
Spectral-domain dyadic Green’s functions in chiral media
10
作者 仲海洋 秦治安 +1 位作者 姚丽 陈宝玖 《Journal of Harbin Institute of Technology(New Series)》 EI CAS 2009年第6期827-829,共3页
A novel method of deriving the electromagnetic dyadic Green's functions in an unbounded, lossless, reciprocal and homogeneous chiral media described by the constitutive relations D = εE + jγB and H = jγE + μ^-1... A novel method of deriving the electromagnetic dyadic Green's functions in an unbounded, lossless, reciprocal and homogeneous chiral media described by the constitutive relations D = εE + jγB and H = jγE + μ^-1B - (ωε)^-1γJ is given. The divergenceless and irrotational splitting of dyadic Dirac 8 function and Fourier transformation are used to directly obtain the divergenceless and irrotational component of spectral-domain dyadic Green's functions in chiral media. This method avoids using the dyadic Green's function eigenfunction expansion technique. The method given here can be generalized to a source-free region and an achiral case. 展开更多
关键词 electromagnetic dyadic Green's function divergenceless component irrotational component dyadic dirac δ function Fourier transformation
下载PDF
Neutrino Mass Generation in SO(4) Model
11
作者 Indranath Bhattacharyya 《Communications in Theoretical Physics》 SCIE CAS CSCD 2010年第8期305-307,共3页
Generation of neutrino mass in SO(4) model is proposed here. The algebraic structure of SO (4) is same as to that ofSU(2)L x SU(2)R. It is shown that the spontaneous symmetry breaking results three massive as ... Generation of neutrino mass in SO(4) model is proposed here. The algebraic structure of SO (4) is same as to that ofSU(2)L x SU(2)R. It is shown that the spontaneous symmetry breaking results three massive as well as three massless gauge bosons. The standard model theory according to which there exist three massive gauge bosons and a massless one is emerged from this model. In the framework ofSU(2)L x SU(2)R a small Dirac neutrino mass is derived. It is also shown that such mass term may vanish with a special choice. The Majorana mass term is not considered here and thus in this model the neutrino mass does not follow seesaw structure. 展开更多
关键词 left right symmetry s0(4) modei extension of electroweak gauge sectors neutrino mass generation dirac neutrino mass
下载PDF
The Incompleteness of Quantum Mechanics Demonstrated by Considerations of Relativistic Kinetic Energy
12
作者 Koshun Suto 《Journal of Applied Mathematics and Physics》 2020年第2期210-217,共8页
The energy levels of a hydrogen atom, derived by Bohr, are known to be approximations. This is because the classical quantum theory of Bohr does not take the theory of relativity into account. In this paper, the kinet... The energy levels of a hydrogen atom, derived by Bohr, are known to be approximations. This is because the classical quantum theory of Bohr does not take the theory of relativity into account. In this paper, the kinetic energy and momentum of an electron in a hydrogen atom are treated relativistically. A clearer argument is developed while also referring to papers published in the past. The energy levels of a hydrogen atom predicted by this paper almost match the theoretical values of Bohr. It is difficult to experimentally distinguish the two. However, this paper predicts the existence of an n = 0 energy level that cannot be predicted even with Dirac’s relativistic quantum mechanics. The only quantum number treated in this paper is n. This point falls far short of a finished quantum mechanics. However, even in discussion at the level of this paper, it can be concluded that quantum mechanics is an incomplete theory. 展开更多
关键词 Einstein’s ENERGY-MOMENTUM Relationship RELATIVIsTIC KINETIC ENERGY n = 0 ENERGY Level dirac’s RELATIVIsTIC Wave Equation
下载PDF
Interpolation of Generalized Functions Using Artificial Neural Networks
13
作者 Raghu T Mylavarapu Bharadwaja Krishnadev Mylavarapu Uday Shankar Sekhar 《Journal of Computer and Communications》 2018年第7期34-40,共7页
In this paper we employ artificial neural networks for predictive approximation of generalized functions having crucial applications in different areas of science including mechanical and chemical engineering, signal ... In this paper we employ artificial neural networks for predictive approximation of generalized functions having crucial applications in different areas of science including mechanical and chemical engineering, signal processing, information transfer, telecommunications, finance, etc. Results of numerical analysis are discussed. It is shown that the known Gibb’s phenomenon does not occur. 展开更多
关键词 FUNCTION INTERPOLATION Hidden Layer WEIGHT BIAs Machine Learning DIsTRIBUTIONs dirac’s FUNCTION Heaviside’s FUNCTION Gibb’s Phenomenon
下载PDF
Electron Dynamics in Solids
14
作者 Shigeji Fujita James McNabb III Akira Suzuki 《Journal of Modern Physics》 2015年第6期733-748,共16页
Following Ashcroft and Mermin, the conduction electrons (“electrons” or “holes”) are assumed to move as wave packets. Dirac’s theorem states that the quantum wave packets representing massive particles always mov... Following Ashcroft and Mermin, the conduction electrons (“electrons” or “holes”) are assumed to move as wave packets. Dirac’s theorem states that the quantum wave packets representing massive particles always move, following the classical mechanical laws of motion. It is shown here that the conduction electron in an orthorhombic crystal moves classical mechanically if the primitive rectangular-box unit cell is chosen as the wave packet, the condition requiring that the particle density is constant within the cell. All crystal systems except the triclinic system have k-vectors and energy bands. Materials are conducting if the Fermi energy falls on the energy bands. Energy bands and gaps are calculated by using the Kronig-Penny model and its 3D extension. The metal-insulator transition in VO2 is a transition between conductors having three-dimensional and one-dimensional k-vectors. 展开更多
关键词 Electron Dynamics dirac’s THEOREM PRIMITIVE Rectangular-Box Unit Cell Wave PACKET k-Vector
下载PDF
Inverse Differential Operators in Time and Space
15
作者 Edwin Eugene Klingman 《Journal of Applied Mathematics and Physics》 2023年第12期3789-3799,共11页
When one function is defined as a differential operation on another function, it’s often desirable to invert the definition, to effectively “undo” the differentiation. A Green’s function approach is often used to ... When one function is defined as a differential operation on another function, it’s often desirable to invert the definition, to effectively “undo” the differentiation. A Green’s function approach is often used to accomplish this, but variations on this theme exist, and we examine a few such variations. The mathematical analysis of  is sought in the form  if such an inverse operator exists, but physics is defined by both mathematical formula and ontological formalism, as I show for an example based on the Dirac equation. Finally, I contrast these “standard” approaches with a novel exact inverse operator for field equations. 展开更多
关键词 Matrix-Inverse Differential Operators Green’s Functions dirac’s Equation Wave Equations Inverse Curl Operator
下载PDF
The Electromagnetic Operator of Mass
16
作者 Hosam Mahmoud Maksoud 《Journal of Applied Mathematics and Physics》 2023年第10期3203-3211,共9页
Studying the source of particle properties is the most important goal for scientists, so it was necessary to use the means available to us, which is physical logic to study these properties. In this paper, you will ex... Studying the source of particle properties is the most important goal for scientists, so it was necessary to use the means available to us, which is physical logic to study these properties. In this paper, you will examine how the type of coordinates in which electromagnetic fields are distributed can have a role in detecting particle properties, specifically using the Riemann-Silberstein vector. Because electromagnetism it deals with electric and magnetic fields together for any electromagnetic sentence, and when we study it according to multiple coordinates and study its derivation by changing coordinates, we discover how the electromagnetic sentences are transformed from one particle to another. 展开更多
关键词 Electromagnetic Potential Annihilation of Pairs Creating of Pairs Proca’s Equation dirac’s Equation Riemann-silberstein Vector
下载PDF
What Connects Dark Matter and Black Holes?
17
作者 Russell Bagdoo 《Journal of Modern Physics》 2020年第2期168-195,共28页
Dark matter is a major component of the universe, about six times more abundant than ordinary visible matter. We measure the effects of its mass, but it escapes the telescopes. It has the particularity of emitting no ... Dark matter is a major component of the universe, about six times more abundant than ordinary visible matter. We measure the effects of its mass, but it escapes the telescopes. It has the particularity of emitting no radiation and interacting only by the action of gravity. The main purpose of this article is to try to answer what dark matter is: we conjecture that it is composed of magnetically charged neutrinos, true magnetic monopoles. But that requires a huge conceptual leap: Maxwell’s laws must be inverted and the electric charge becomes a magnetic charge. Asymmetric “reversed” Maxwell’s laws would provide the “dark” magnetic charge that would replace the electric charge. The very form of the Dirac equation, which imposed on ordinary matter that the particle carries an electric charge and obeys the principal properties of the electron, would impose in the dark matter that the “dark” particle obeys the main properties of a neutrino associated with a magnetic charge. The second aim of the article is to show that dark matter is derived from black holes, mainly from active supermassive black holes. This requires a second conceptual leap: the horizon of the black hole undergoes a high temperature and an intense pressure of magnetic fields which cause a blackout and a phase transition (or broken symmetry) when the matter crosses the horizon. The result is a reversal of Maxwell’s laws: a magnetic charge is substituted for the electric charge, and the electric current becomes a tributary of the magnetic current. A third important conceptual leap follows: sterile magnetic neutrinos created inside the black hole would cross the horizon to the outside to constitute dark matter. 展开更多
关键词 Dark Matter MAGNETIC MONOPOLE Inverted Maxwell’s Equations Magneto-Electric dirac Equation MAGNETIC sTERILE NEUTRINO Active Black Hole Event Horizon
下载PDF
Reconciliation of Theoretical Lifetimes of the 5s5p^(3)P_(2)^(o) Metastable State for ^(88)Sr with Measurement: The Role of the Blackbody-Radiation-Induced Decay
18
作者 Benquan Lu Xiaotong Lu +1 位作者 Jiguang Li Hong Chang 《Chinese Physics Letters》 SCIE EI CAS CSCD 2022年第7期41-46,共6页
We conducted measurement and calculation to resolve the long-standing large discrepancy in the metastable state lifetime for the ^(88)Sr atom between theoretical and experimental results. The present lifetime τ = 830... We conducted measurement and calculation to resolve the long-standing large discrepancy in the metastable state lifetime for the ^(88)Sr atom between theoretical and experimental results. The present lifetime τ = 830_(-240)^(+600)s,measured using the magneto-optical trap as a photon amplifier to detect the weak decay events, is approximately60% larger than the previous experimental value τ = 520_(-140)^(+310)s. By considering the electron correlation effects in the framework of the multiconfiguration Dirac–Hartree–Fock theory, we obtained a theoretical lifetime of 1079(54) s, which lies in the range of measurements with error bars. Furthermore, we considered the higher-order electron correlation and Breit interaction to control the uncertainty of the theoretical calculation. The significant improvement in the agreement between calculations and measurements is attributed to the updated blackbody radiation-induced decay rate. 展开更多
关键词 dirac The Role of the Blackbody-Radiation-Induced Decay sr with Measurement Reconciliation of Theoretical Lifetimes of the 5s5p^(3)P_(2)^(o)Metastable state for
下载PDF
The Quantization of Space
19
作者 Uta Volkenborn Heinz Volkenborn 《Journal of High Energy Physics, Gravitation and Cosmology》 2023年第3期684-692,共9页
In the present work, it will be shown that the dimensionless number 137 of the fine-structure constant α demands a quantization of space. For this purpose, we refer to a volume constant of electromagnetic processes, ... In the present work, it will be shown that the dimensionless number 137 of the fine-structure constant α demands a quantization of space. For this purpose, we refer to a volume constant of electromagnetic processes, which takes effect as a volume quantum. This involves not only a re-evaluation of the Dirac equation but also, and above all, a determination of Einstein’s velocity vector as the fundamental property of these processes. A prerequisite is the linking of the hydrogen spectrum with the hydrogen nucleus. 展开更多
关键词 Hydrogen spectrum dirac Equation Einstein’s Velocity Vector Newton’s Law of Universal Gravitation Planck-Constant spin-Orbit Coupling
下载PDF
沃尔沃2018款S60L
20
《产品可靠性报告》 2017年第7期54-55,共2页
车型亮点:使用Volvo On Call随车管家手机客户端,可实现车辆信息显示、远程车辆定位、远程开/锁车门等功能。S60L搭载来自Harman Kardon~的高端音响,Dirac Live声场提升技术,享受听觉盛宴。CZIS主动式座舱清洁系统可以在驾驶员进入... 车型亮点:使用Volvo On Call随车管家手机客户端,可实现车辆信息显示、远程车辆定位、远程开/锁车门等功能。S60L搭载来自Harman Kardon~的高端音响,Dirac Live声场提升技术,享受听觉盛宴。CZIS主动式座舱清洁系统可以在驾驶员进入车内之前,减少因车内停放时积聚的挥发性气体。 展开更多
关键词 手机客户端 遥控车 VOLVO s60L 室外温度 挥发性气体 车辆信息 dirac 车辆定位 汽车制造
下载PDF
上一页 1 2 下一页 到第
使用帮助 返回顶部