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论零点振动能与Casimir力 被引量:7
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作者 黄志洵 《中国工程科学》 2008年第5期63-69,共7页
在真空中放置一对平行的金属板(间距很小),两板会由于一个微弱(可测出)的力而有相互靠近的趋势。这种Casimir效应可用量子理论中的零点能(ZPE)解释。科学家们都认为Casimir力存在,但对其产生的原因却有不同看法。空虚空间是否具有能量,... 在真空中放置一对平行的金属板(间距很小),两板会由于一个微弱(可测出)的力而有相互靠近的趋势。这种Casimir效应可用量子理论中的零点能(ZPE)解释。科学家们都认为Casimir力存在,但对其产生的原因却有不同看法。空虚空间是否具有能量,其答案或许将决定宇宙的命运。在自然界和人类实验室中,有许多异常现象可用Casimir效应及挠场理论作出说明。 展开更多
关键词 零点能 零点场 真空能 CASIMIR力 挠场理论
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强简并理想费米气体的热力学特征分析 被引量:1
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作者 缪胜清 马桂存 《安徽大学学报(自然科学版)》 CAS 1994年第2期34-38,18,共6页
本文讨论由能谱关系为ε=αp3(s=1,2)的粒子组成的n维(n=1,2,3)理想费米气体在低温下的热力学性质,将不同的能谱关系和维度性对系统热力学性质的影响作统一的论证分析。
关键词 费米气体 泡利原理 热力学性质
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A Mode of Electromagnetic Wave Propagation Based on the Inter-induction of Scalar Electric Field and Vortex Magnetic Field
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作者 Jiang Jianzhong 《Journal of Environmental Science and Engineering(B)》 CAS 2024年第4期134-143,共10页
Drawing upon the electromagnetic conversion formulas in a continuous conductive medium,an extensive examination for total current law and Faraday’s law of electromagnetic induction(Faraday’s law)is undertaken to exp... Drawing upon the electromagnetic conversion formulas in a continuous conductive medium,an extensive examination for total current law and Faraday’s law of electromagnetic induction(Faraday’s law)is undertaken to expound on the laws of electromagnetic induction and conversion.The longitudinal wave term of Faraday’s law is reinstated to render it suitable for theoretical derivation of the LEM(Longitudinal Electromagnetic Wave)equation.Subsequently,we formulate the wave and energy equations for electric P-wave based on reevaluated total current law and modified Faraday’s law;meanwhile proposing a propagation mode that reveals its mechanisms absorbing free energy for LEM waves in a conductor predicated on interaction between scalar electric field and vortex magnetic field.Furthermore,through theoretical derivations based on LEM waves,insights into concealed relationships between electric P-wave and electromagnetism scalar potential are disclosed alongside the constraint equation between the wave velocities of LEM wave and TEM(Transverse Electromagnetic)waves,unveiling the significance of LEM wave. 展开更多
关键词 Quantum electrodynamics LEM modified Faraday’s law of electromagnetic induction electromagnetic vortex potential zero-point vacuum energy
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真空涨落与Casimir力 被引量:4
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作者 黄志洵 《中国传媒大学学报(自然科学版)》 2010年第3期1-7,共7页
荷兰物理学家H.Casimir于1948年预期有这样一种力:按照量子力学中的零点能(ZPE)理论,当有两块不带电荷的互相平行的金属板,场的每个模式对每块板都产生一定的压强,这种已由实验证明其存在的力使两板靠近。在62年后的今天,Casimir力仍使... 荷兰物理学家H.Casimir于1948年预期有这样一种力:按照量子力学中的零点能(ZPE)理论,当有两块不带电荷的互相平行的金属板,场的每个模式对每块板都产生一定的压强,这种已由实验证明其存在的力使两板靠近。在62年后的今天,Casimir力仍使人惊讶。由于Casimir效应的普遍性,物理学中多处用到这一概念。本文描述的理论与实验使对现象的认识得到深化。Casimir效应使真空能(或者说真空电磁场)的存在成为可观察的效应。在这里"真空"一词是指物理真空,而非工程技术的真空。但为了以更高精度测量金属表面之间的Casimir力,我们建议实验环境应按工程真空的要求安排,例如采用超高真空(UHV)。 展开更多
关键词 零点能 真空涨落 CASIMIR力
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柱环腔中的量子电动力学效应 被引量:3
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作者 蒋维洲 傅德基 +2 位作者 王震遐 艾小白 朱志远 《物理学报》 SCIE EI CAS CSCD 北大核心 2003年第4期813-822,共10页
研究以同轴不同半径柱面围成的导体柱环腔体中电磁场真空零点振动模式所给出的宏观量子效应 .零点振动模式通过求解柱环空腔边界条件下无源的Maxwell方程组获得 .得到了双柱面同心柱环中单位长度和单位面积的且是有限的真空能量 ,即Casi... 研究以同轴不同半径柱面围成的导体柱环腔体中电磁场真空零点振动模式所给出的宏观量子效应 .零点振动模式通过求解柱环空腔边界条件下无源的Maxwell方程组获得 .得到了双柱面同心柱环中单位长度和单位面积的且是有限的真空能量 ,即Casimir能量 .这有限的Casimir能量可以分解为独立而且收敛的三部分 ,它们分别来自内柱面、外柱面和柱环之中 .对多柱面同心柱环 ,Casimir能量可分解为独立的 (2n— 1)部分 (n为柱面数 ) .柱环是类似于平行板的几何结构 .但柱环所给出的Casimir能量和Casimir势能系数是随着柱环间隔变化的 ,不同于平行板是常数的情况 . 展开更多
关键词 柱环腔 量子电动力学 CASIMIR效应 零点能 导体 平行板
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Spin Supercurrent in Phenomena of Quantum Non-Locality (Quantum Correlations, Magnetic Vector Potential) and in Near-Field Antenna Effect 被引量:1
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作者 Liudmila B. Boldyreva 《Journal of Modern Physics》 2019年第2期128-144,共17页
It is shown that such phenomena as quantum correlations (interaction of space-separated quantum entities), the action of magnetic vector potential on quantum entities in the absence of magnetic field, and near-field a... It is shown that such phenomena as quantum correlations (interaction of space-separated quantum entities), the action of magnetic vector potential on quantum entities in the absence of magnetic field, and near-field antenna effect (the existence of superluminally propagating electromagnetic fields) may be explained by action of spin supercurrents. In case of quantum correlations between quantum entities, spin supercurrent emerges between virtual particles pairs (virtual photons) created by those quantum entities. The explanation of magnetic vector potential and near-field antenna effect is based on contemporary principle of quantum mechanics: the physical vacuum is not an empty space but the ground state of the field consisting of quantum harmonic oscillators (QHOs) characterized by zero-point energy. Using the properties of the oscillators and spin supercurrent, it is proved that magnetic vector potential is proportional to the moment causing the orientation of spin of QHO along the direction of magnetic field. The near-field antenna effect is supposed to take place as a result of action of spin supercurrent causing secondary electromagnetic oscillations. In this way, the electromagnetic field may spread at the speed of spin supercurrent. As spin supercurrent is an inertia free process, its speed may be greater than that of light, which does not contradict postulates of special relativity that sets limits to the speed of inertial systems only. 展开更多
关键词 SPIN SUPERCURRENT QUANTUM Correlations Magnetic Vector Potential NEAR-FIELD Antenna Effect zero-point energy QUANTUM Harmonic Oscillator VIRTUAL Particles Pair VIRTUAL Photon
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预应力作用下双层石墨烯低温热振动 被引量:2
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作者 刘汝盟 王立峰 《科学通报》 EI CAS CSCD 北大核心 2017年第4期245-253,共9页
热振动对纳尺度器件动力学特性有着重要的影响.为此,建立了预应力作用下,考虑量子效应的双层矩形石墨烯的等效连续介质模型.计算了不同预应力作用下,不同温度时双层石墨烯的固有频率和均方根振幅.双层石墨烯层间存在范德华相互作用,其... 热振动对纳尺度器件动力学特性有着重要的影响.为此,建立了预应力作用下,考虑量子效应的双层矩形石墨烯的等效连续介质模型.计算了不同预应力作用下,不同温度时双层石墨烯的固有频率和均方根振幅.双层石墨烯层间存在范德华相互作用,其同向振动固有频率与相同尺寸单层石墨烯固有频率相等,双层石墨烯存在大于同向振动频率的反向振动频率.考虑量子效应板模型得到的均方根振幅值小于结合能量均分原理板模型得到的结果.且随着温度的降低,两种板模型结果之间的差值增大,量子效应越来越明显.随着预应力的增加,双层石墨烯的固有频率值增加,均方根振幅值降低,量子效应的影响逐渐增加.预应力对同向振动的影响远大于对反向振动的影响.分析了零点能量对双层石墨烯热振动的影响,当计入零点能量后,石墨烯均方根振幅大于结合能量均分原理板模型预测的结果,且在零温时依然存在不为零的振幅. 展开更多
关键词 双层石墨烯 热振动 范德华力 量子效应 板模型 零点能量
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A New Strategy for Solving Two Cosmological Constant Problems in Hadron Physics
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作者 Thomas L. Wilson 《Journal of Modern Physics》 2013年第5期686-703,共18页
A new approach to solving two of the cosmological constant problems (CCPs) is proposed by introducing the Abbott-Deser (AD) method for defining Killing charges in asymptotic de Sitter space as the only consistent mean... A new approach to solving two of the cosmological constant problems (CCPs) is proposed by introducing the Abbott-Deser (AD) method for defining Killing charges in asymptotic de Sitter space as the only consistent means for defining the ground-state vacuum for the CCP. That granted, Einstein gravity will also need to be modified at short-distance nuclear scales, using instead a nonminimally coupled scalar-tensor theory of gravitation that provides for the existence of QCD’s two-phase vacuum having two different zero-point energy states as a function of temperature. Einstein gravity alone cannot accomplish this. The scalar field will be taken from bag theory in hadron physics, and the origin of the bag constant B is accounted for by gravity’s CC as B—noting that the Higgs mechanism does not account for either the curved-space origin of λ or the mass of composite hadrons. A small Hubble-scale graviton mass mg^10-33eV naturally appears external to the hadron bag, induced by λ≠0. This mass is unobservable and gravitationally gauge-dependent. It is shown to be related to the cosmological event horizon in asymptotic de Sitter space. 展开更多
关键词 COSMOLOGICAL Constant Problem Vacuum energy Density HADRON PHYSICS ASYMPTOTIC de SITTER Space zero-point energy
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Another possibility of sonoluminescence due to the cherenkov radiation from the ZPF field in a water bubble
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作者 Takaaki Musha 《Natural Science》 2011年第3期249-254,共6页
Sonoluminescence is the light produced from the collapse of bubbles in water under ultrasound. Schwinger proposed a physical mechanism for sonoluminescence in terms of photon production due to changes of quantum elect... Sonoluminescence is the light produced from the collapse of bubbles in water under ultrasound. Schwinger proposed a physical mechanism for sonoluminescence in terms of photon production due to changes of quantum electrodynamic energy contained in a collapsing dielectric bubble. However there are critics for the Schwinger’s proposal that his estimate of the Casimir energy involved is inaccurate and there are several papers to propose its missing term. In this paper, the author presents another possible component of sonoluminescense which is due to Cherenkov radiation from tachyon pairs generated in a collapsing bubble. 展开更多
关键词 Sonoluminscence CASIMIR energy CHERENKOV Radiation TACHYON zero-point energy
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An Analogy between the Properties of “Dark Energy” and Physical Vacuum Consisting of Quantum Harmonic Oscillators Characterized by Zero-Point Energy
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作者 Liudmila B. Boldyreva 《Journal of Modern Physics》 2019年第1期20-34,共15页
In quantum field theory, the physical vacuum, free from magnetic and electric fields (without regard to gravitational energy), is defined not as an empty space but as the ground state of the field consisting of quantu... In quantum field theory, the physical vacuum, free from magnetic and electric fields (without regard to gravitational energy), is defined not as an empty space but as the ground state of the field consisting of quantum harmonic oscillators (QHOs) characterized by zero-point energy. The aim of this work is to show that such physical vacuum may possess the properties similar to the properties of dark energy: the positive density, the negative pressure, and the possibility of so-called accelerated expansion. In the model discussed, the mass of QHOs determines the positive density of dark energy. The observed electric polarization of physical vacuum in an electric field means the existence of electric dipole moment of QHO, which, in turn, suggests the existence inside the QHO of a repulsive force between unlike charges compensating the attractive Coulomb force between the charges. The existence of such repulsive force may be treated as the existence of omniradial tensions inside every QHO. In terms of hydrodynamics, it means that the vacuum with this property may be regarded as a medium with negative pressure. The electric dipole-dipole interaction of QHOs under some condition may result in the expansion of physical vacuum consisting of QHOs. It is shown also that the physical vacuum consisting of QHOs is a luminiferous medium, and based on this concept the conditions are discussed for the emergence of invisiblity of any objects (in particular, dark matter). The existence of luminiferous medium does not contradict the second postulate of special relativity (the principle of constancy of the velocity of light in inertial systems), if to take into account the interaction of photons with QHOs and with virtual photons (the virtual particles pairs) created by quantum entities that constitute the inertial systems. 展开更多
关键词 DARK energy DARK MATTER zero-point energy Quantum Harmonic Oscillator COSMIC Microwave Background
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黑体辐射公式的多种推导及其在近代物理构建中的意义(Ⅰ) 被引量:1
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作者 曹则贤 《物理》 CAS 北大核心 2021年第11期761-766,共6页
黑体辐射是近代物理史上一只会下金蛋的鹅,是近代物理的摇篮。黑体辐射研究的意义还在于这是唯一一个涉及c,k,h三个普适常数的物理情景。黑体辐射谱抗测量误差的特性带来了辐射标准和绝对温度参照,谱分布公式对模型的不敏感则使得黑体... 黑体辐射是近代物理史上一只会下金蛋的鹅,是近代物理的摇篮。黑体辐射研究的意义还在于这是唯一一个涉及c,k,h三个普适常数的物理情景。黑体辐射谱抗测量误差的特性带来了辐射标准和绝对温度参照,谱分布公式对模型的不敏感则使得黑体辐射成为独特的物理研究母题。黑体辐射谱分布公式,普朗克多角度推导过,德拜推导过,艾伦菲斯特推导过,劳厄推导过,洛伦兹和庞加莱深入讨论过,泡利推导过,玻色推导过,爱因斯坦在20多年的时间里多角度推导过且产出最为丰硕,近代还有从相对论角度的推导,每一个角度的推导都带来了物理学的新内容,这包括量子力学、固体量子论、受激辐射、量子统计、相对论统计,等等。认真回顾黑体辐射研究的历史细节,考察其中的思想概念演化,不啻于体验一次教科书式的学(做)物理之旅,比如也可以尝试给出能量局域分立化的简单新证明。 展开更多
关键词 黑体 黑体辐射 热辐射 空腔辐射 气体运动论 热平衡 不可逆过程 绝对温度 基尔霍夫定律 斯特藩—玻尔兹曼公式 维恩位移公式 维恩谱分布 瑞利—金斯谱分布 能量均分原理 普朗克方程 普朗克函数 普朗克谱分布 振子 能量量子 不连续性 量子力学 作用量量子化 相空间体积量子化 零点能 全同粒子 玻尔兹曼统计 光电效应 受激辐射 玻色—爱因斯坦统计 玻色—爱因斯坦凝聚 费米—狄拉克统计 热力学 电磁学 统计力学 量子 光子 涨落 波粒二象性
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Quantitative Evaluation of the Lifshitz-Type Temperature Effect on the Casimir Force
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作者 Frédéric Schuller Renaud Savalle 《Journal of Modern Physics》 2017年第11期1779-1783,共5页
We consider the extension of the Casimir effect to finite temperatures in the ideal case of perfectly reflecting plates. We apply Lifshitz’s theory in its Dzyaloshinskii version, and calculate the resulting force num... We consider the extension of the Casimir effect to finite temperatures in the ideal case of perfectly reflecting plates. We apply Lifshitz’s theory in its Dzyaloshinskii version, and calculate the resulting force numerically for various plate distances. We show that the limiting expression found in the literature corresponds to unrealistic values of the parameters for which the force is too small to be measurable. Preliminary remark: There exists a huge literature on the Casimir effect both theoretical and experimental. In this note we concentrate on a particular point of the subject, quoting only references directly related to this point. 展开更多
关键词 QUANTUM Vacuum QUANTUM STATISTICS Thermal Radiation zero-point energy VAN der WAALS FORCES
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The Spin-Spin Interaction and the New Concept of Photon
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作者 Quang Quy Ho 《Journal of Electromagnetic Analysis and Applications》 2012年第11期447-451,共5页
After researching carefully the well known M. Planck’s law of the black-body radiation, the quantum theory of field and the Einstein’s postulates about interaction of the photon with the atoms, there are a lot of un... After researching carefully the well known M. Planck’s law of the black-body radiation, the quantum theory of field and the Einstein’s postulates about interaction of the photon with the atoms, there are a lot of unclear questions about photon and its interaction with atom. From all the above questions, there are three main following questions: Why does the energy of a light mode include zero-point energy? Where does the first photon come from in universe? and What is the first fact as a reason of absorption, emission in the photon-atom interaction? To find out the acceptable answers, here we propose postulates about the zero-photon and then about the new concepts of photon. Using them, we have tried to describe the basic characters of the photon and explain the photon-atom interaction in other way: the spin-spin interaction. Our results showed out the different picture of mechanism of the photon-atom interaction, the existence of the zero-photon energy, the absorption as well as the emission rule and its probabilities. 展开更多
关键词 zero-point of energy Photon-Atom Interaction BIG Bang SPIN UNIVERSE Wave
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一维无限深势阱模型的进一步讨论 被引量:1
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作者 王党朝 张小安 +1 位作者 刘紫玉 梅策香 《咸阳师范学院学报》 2010年第6期20-22,共3页
一维无限深势阱模型是量子力学中重要的问题之一,使用坐标-动量不确定度关系和算符理论分别证明了能量E大于0,并对该模型中的定态波函数、物理量量子化、能级间隔、零点能、坐标-动量不确定度关系以及一维无限深势阱模型成立的条件作了... 一维无限深势阱模型是量子力学中重要的问题之一,使用坐标-动量不确定度关系和算符理论分别证明了能量E大于0,并对该模型中的定态波函数、物理量量子化、能级间隔、零点能、坐标-动量不确定度关系以及一维无限深势阱模型成立的条件作了进一步的讨论。 展开更多
关键词 一维无限深势阱 坐标-动量不确定关系 零点能
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场的零点起伏的能谱及粒子检测器的响应函数 被引量:1
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作者 刘自信 《河南师范大学学报(自然科学版)》 CAS CSCD 1989年第2期17-21,共5页
本文研究了在含有静态边界的静态时空中场的零点起伏的能谱与Dewitt单极粒子检测器的响应函数,给出了反映它们之间相互联易的简单公式。
关键词 零点起伏 能谱 粒子检测器
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经典谐振子与量子谐振子 被引量:1
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作者 刘明 《湖北教育学院学报》 2006年第8期6-8,共3页
线性谐振子问题在经典力学中和量子力学中都是一个倍受关注的问题,它的重要性在于自然界中广泛碰到简谐运动,许多体系都可以近似地看作线性谐振子。本文从经典和量子两个角度对谐振子问题进行了研究和比较,并用测不准关系探讨了零点能... 线性谐振子问题在经典力学中和量子力学中都是一个倍受关注的问题,它的重要性在于自然界中广泛碰到简谐运动,许多体系都可以近似地看作线性谐振子。本文从经典和量子两个角度对谐振子问题进行了研究和比较,并用测不准关系探讨了零点能问题。 展开更多
关键词 零点能 测不准关系 波粒二象性 量子谐振子 线性谐振子 量子力学 经典力学
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零点能与修正的Friedmann方程 被引量:1
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作者 程龙 《江西科学》 2011年第6期700-703,共4页
将引力理论视为宏观衍生理论,根据固体物理中的Debye模型,引入零点能修正能量均分定理。进而利用Verlinde熵力的方法去得到修正的Friedmann方程,并将修正项解释为与时间相关的真空能量密度。
关键词 衍生现象 Debye模型 零点能 修正Friedmann方程
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利用真空零点能进行量子微型推进技术的研究 被引量:1
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作者 朱国华 丁建宁 杨继昌 《中国机械工程》 EI CAS CSCD 北大核心 2005年第12期1054-1057,共4页
利用真空零点能作为驱动能源,可以有效解决卫星长期工作的能源问题。阐述了零点能及Casimir力的理论依据,对真空中的两平行平板结构、矩形腔等结构内由零点能引起的Casimir力进行分析,引出用Casimir力作为驱动力的微型推进系统理论模型。
关键词 零点能 克什米尔力(Casimir) 微型推进技术 理论模型
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THz trapped ion model and THz spectroscopy detection of potassium channels 被引量:1
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作者 Kaicheng Wang Shaomeng Wang +3 位作者 Lixia Yang Zhe Wu Baoqing Zeng Yubin Gong 《Nano Research》 SCIE EI CSCD 2022年第4期3825-3833,共9页
Advanced molecular dynamics(MD)simulation and infrared(IR)spectroscopy have been widely adopted to reveal the detailed dynamic process of high-speed selective permeability of potassium channels.Yet these MD simulation... Advanced molecular dynamics(MD)simulation and infrared(IR)spectroscopy have been widely adopted to reveal the detailed dynamic process of high-speed selective permeability of potassium channels.Yet these MD simulations cannot avoid the choice of empirical molecular force fields and high transmembrane voltages(as driving electric fields for ions)far exceeding physiological levels.Moreover,the IR spectroscopy method usually requires isotope labels for carbonyl groups of the channels,which may change the original permeation process.Here,we build the terahertz(THz)trapped ion model for the selectivity filter(SF)of potassium channels KcsA based on the density functional theory(DFT)calculation of ion potentials.In this model,the zero-point energy of trapped ions and quantum tunneling effect provide the physical basis for near diffusion limited permeation rates of ions and explain the high driving electric field in MD simulations.Quantitative calculations of zero-point energy and tunneling probability show that the quantum effect assisted knock-on mechanism may help to realize the physiological functions of potassium channels.Furthermore,based on the trapped ion model,we calculated the ion decoherence timescale under the influence of protein environmental noise.We use the quantum optics method to describe the interaction between THz waves and the trapped ion.Then the novel THz spectroscopy approaches through the THz resonance fluorescence and the intense field non-resonant effect are presented theoretically.These are expected to be isotope label-free detective methods of the rapid ion permeation dynamics. 展开更多
关键词 potassium channels trapped ions zero-point energy quantum tunneling effect terahertz spectrum density functional theory(DFT)calculation
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基于量子效应的微型推进器设计 被引量:1
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作者 程广贵 丁建宁 +1 位作者 王权 杨继昌 《微纳电子技术》 CAS 2006年第3期141-144,149,共5页
微/纳机电系统(MEMS/NEMS)技术的发展,大大促进了航空航天领域飞行器的微型化。依据量子理论,有效提取真空中的零点能,并以此作为驱动能源,可以解决微型飞行器由于必须携带燃料而增加重量等问题。从理论上阐述了真空零点能及Casimir力... 微/纳机电系统(MEMS/NEMS)技术的发展,大大促进了航空航天领域飞行器的微型化。依据量子理论,有效提取真空中的零点能,并以此作为驱动能源,可以解决微型飞行器由于必须携带燃料而增加重量等问题。从理论上阐述了真空零点能及Casimir力的产生机理,研究了真空中两平行平板和矩形腔等结构设计依据,提出并建立了以Casimir力作为驱动力的微型推进器设计模型。 展开更多
关键词 卡西米尔力 零点能 微型推进器 微/纳机电系统
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