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Scale Invariant Theory of Gravitation in Einstein-Rosen Space-Time
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作者 Bivudutta Mishra Pradyumn Kumar Sahoo Addepalli Ramu 《Journal of Modern Physics》 2010年第3期185-189,共5页
In this paper, we have studied the perfect fluid distribution in the scale invariant theory of gravitation, when the space-time described by Einstein-Rosen metric with a time dependent gauge function. The cosmological... In this paper, we have studied the perfect fluid distribution in the scale invariant theory of gravitation, when the space-time described by Einstein-Rosen metric with a time dependent gauge function. The cosmological equations for this space-time with gauge function are solved and some physical properties of the model are studied. 展开更多
关键词 scale INVARIANT space-time PERFECT Fluid
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LES prediction of space-time correlations in turbulent shear flows 被引量:4
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作者 Li Guo Dong Li +1 位作者 Xing Zhang Guo-Wei He 《Acta Mechanica Sinica》 SCIE EI CAS CSCD 2012年第4期993-998,共6页
We compare the space-time correlations calculated from direct numerical simulation (DNS) and large-eddy simulation (LES) of turbulent channel flows. It is found from the comparisons that the LES with an eddy-visco... We compare the space-time correlations calculated from direct numerical simulation (DNS) and large-eddy simulation (LES) of turbulent channel flows. It is found from the comparisons that the LES with an eddy-viscosity subgrid scale (SGS) model over-predicts the space-time corre- lations than the DNS. The overpredictions are further quantified by the integral scales of directional correlations and convection velocities. A physical argument for the overpre- diction is provided that the eddy-viscosity SGS model alone does not includes the backscatter effects although it correctly represents the energy dissipations of SGS motions. This argument is confirmed by the recently developed elliptic model for space-time correlations in turbulent shear flows. It suggests that enstrophy is crucial to the LES prediction of spacetime correlations. The random forcing models and stochastic SGS models are proposed to overcome the overpredictions on space-time correlations. 展开更多
关键词 Large-eddy simulation Subgrid scale model space-time correlation Turbulent shear flows
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Three Dimensional Space-Time Gravitational Metric, 3 Space + 3 Time Dimensions 被引量:1
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作者 Espen Gaarder Haug 《Journal of High Energy Physics, Gravitation and Cosmology》 2021年第4期1230-1254,共25页
We have recently suggested a new quantum gravity theory that can be unified with quantum mechanics. We have coined this theory collision space-time. This new theory seems to be fully consistent with a 3-dimensional sp... We have recently suggested a new quantum gravity theory that can be unified with quantum mechanics. We have coined this theory collision space-time. This new theory seems to be fully consistent with a 3-dimensional space-time, that is, three space dimensions and three time-dimensions, so some would call it six-dimensional. However, we have shown that collision-time and collision-length (space) are just two different sides of the same “coin” (space-time), so it is more intuitive to think of them as 3-dimensional space-time. In previous papers, we have not laid out a geometric coordinate system for our theory that also considers gravity, but we will do that here. We are pointing out that Einstein’s negative attitude towards relativistic mass can perhaps cause a weakness in the foundation of general relativity theory. When a relativistic mass is incorporated in the theory, this mass also seems to indicate one needs to move to three-dimensional space-time. Then, for example, our new theory matches fully up with all the properties of the Planck scale in relation to the mathematical properties of micro black holes, not only mathematically but also logically, something we demonstrate clearly that it is not the case of general relativity theory. Our new metric has many benefits as an alternative to the Schwarzschild metric and general relativity theory. It seems to be more consistent with the Planck units than the Schwarzschild metric. Most importantly, it seems to be fully consistent with a new quantum gravity theory that seems to unify gravity with quantum mechanics. 展开更多
关键词 Escape Velocity Spherical Gravitational Metric Schwarzschild Radius Collision space-time Planck scale
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Application of Scale Relativity to the Problem of a Particle in a Simple Harmonic Oscillator Potential
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作者 Saeed N. T. Al-Rashid Mohammed A. Z. Habeeb Khalid A. Ahmed 《Journal of Quantum Information Science》 2017年第3期77-88,共12页
In the present work, Scale Relativity (SR) is applied to a particle in a simple harmonic oscillator (SHO) potential. This is done by utilizing a novel mathematical connection between SR approach to quantum mechanics a... In the present work, Scale Relativity (SR) is applied to a particle in a simple harmonic oscillator (SHO) potential. This is done by utilizing a novel mathematical connection between SR approach to quantum mechanics and the well-known Riccati equation. Then, computer programs were written using the standard MATLAB 7 code to numerically simulate the behavior of the quantum particle utilizing the solutions of the fractal equations of motion obtained from SR method. Comparison of the results with the conventional quantum mechanics probability density is shown to be in very precise agreement. This agreement was improved further for some cases by utilizing the idea of thermalization of the initial particle state and by optimizing the parameters used in the numerical simulations such as the time step and number of coordinate divisions. It is concluded from the present work that SR method can be used as a basis for description the quantum behavior without reference to conventional formulation of quantum mechanics. Hence, it can also be concluded that the fractal nature of space-time implied by SR, is at the origin of the quantum behavior observed in these problems. The novel mathematical connection between SR and the Riccati equation, which was previously used in quantum mechanics without reference to SR, needs further investigation in future work. 展开更多
关键词 Simple HARMONIC OSCILLATOR scale RELATIVITY Numerical Simulations FRACTAL space-time
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Quantization Conditions, for a Wormhole Wave Function Revisited, as to How a Wormhole Throat Could Generate GW and Gravitons: Simple Version of Negative Energy Form Wormhole Obtained from First Principles, and Comparison with Tokamak GW/Gravitons Done
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作者 Andrew Walcott Beckwith 《Journal of High Energy Physics, Gravitation and Cosmology》 CAS 2023年第1期124-133,共10页
We revisit how we utilized how Weber in 1961 initiated the process of quantization of early universe fields to the issue of what was for a wormhole mouth. While the wormhole models are well understood, there is not su... We revisit how we utilized how Weber in 1961 initiated the process of quantization of early universe fields to the issue of what was for a wormhole mouth. While the wormhole models are well understood, there is not such a consensus as to how the mouth of a wormhole could generate signals. We try to develop a model for doing so and then revisit it, the Wormhole while considering a Tokamak model we used in a different publication as a way of generating GW, and Gravitons. 展开更多
关键词 Minimum scale Factor Cosmological Constant space-time Bubble Bouncing Cosmologies TOKAMAKS
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First order QED processes in a spatially flat FLRW space-time with a Milne-type scale factor
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作者 Ion ICotaescu Diana Popescu 《Chinese Physics C》 SCIE CAS CSCD 2020年第5期140-149,共10页
The quantum electrodynamics(QED)in a spatially flat(1+3)-dimensional Friedmann-Lema?tre-Robertson-Walker(FLRW)space-time with a Milne-type scale factor is outlined focusing on the amplitudes of the allowed processes i... The quantum electrodynamics(QED)in a spatially flat(1+3)-dimensional Friedmann-Lema?tre-Robertson-Walker(FLRW)space-time with a Milne-type scale factor is outlined focusing on the amplitudes of the allowed processes in the first order perturbations.The definition of the transition rates is reconsidered such that an appropriate angular behavior of the probability for creation of an electron-positron pair from a photon is obtained,which has a similar rate as the creation of a photon and an electron-positron pair from vacuum.It is shown that these processes are allowed only in the first order perturbations,since the photon emission or absorption by an electron or positron are forbidden. 展开更多
关键词 spatially FLAT FLRW space-time Milne-type scale factor first order AMPLITUDES transition rates
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冀中地区深井水温分布特征和与其有关的地震前兆分析
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作者 王永才 张根深 孙宝元 《防灾减灾学报》 1992年第2期55-63,共9页
本文用地球化学温标计算了冀中地区深井蓄水层的温度,并用不同温标计算的结果进行了对比研究。进而研究了温度对CaF_2等难溶化合物溶解度,水—岩氧同位素交换和离子交换反应,水—岩化学反应以及气体溶解度的影响。指出与上述作用有关的... 本文用地球化学温标计算了冀中地区深井蓄水层的温度,并用不同温标计算的结果进行了对比研究。进而研究了温度对CaF_2等难溶化合物溶解度,水—岩氧同位素交换和离子交换反应,水—岩化学反应以及气体溶解度的影响。指出与上述作用有关的组分,如,SiO_2、F^-、HCO_3^-、H_2、He、δ^(18)O、Na/K等是对地下水温度变化敏感的组分,震前有可能观测到这些组分的前兆变化。 展开更多
关键词 地球化学温标 热敏组分 地震前兆
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热力学基本方程在不同温标中的具体形式和条件
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作者 尹钊 石开屏 《江苏师范大学学报(自然科学版)》 CAS 1992年第3期43-47,共5页
本文阐明了热力学基本方程在不同温标中的形式和条件。
关键词 热力学基本方程 温标 形式
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重整热力学第二定律理论体系的一种新方法
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作者 严子浚 《大学物理》 北大核心 2002年第2期26-27,共2页
利用理想气体可逆过程的规律来建立热力学第二定律的理论体系并无必要 .本文提出一种新的方法 .
关键词 势力学第二定律 克劳修斯不等式 绝对温标 理想气体 理论体系
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迥然不同的pV=nRθ与pV=nRT
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作者 李崇虎 《大学物理》 2000年第12期22-23,28,共3页
理想气体的状态方程 pV =nRθ,是依据三个实验定律进行热力学理论推导的结果 .根据它可以用理想气体实现热力学温标 .pV =nRT是依据实验事实得到的理想气体绝对温标的定义式 .两者的物理意义是不相同的 .
关键词 理想气体 测温属性 温标 状态方程 热力学
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宜良地热田水化学特征分析与研究 被引量:7
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作者 张艳花 徐世光 +2 位作者 巴俊杰 李晨晨 童文辉 《矿产与地质》 2016年第5期837-841,共5页
水化学特征不仅应用于分析地下水水质的时空变化规律,而且还提供地下水水动力环境信息。水化学分析方法已成为对探索地热田成因、地下水补给来源等常用的研究方法。基于近些年的研究资料,综合分析热储层结构特征和水化学特征,认为宜良... 水化学特征不仅应用于分析地下水水质的时空变化规律,而且还提供地下水水动力环境信息。水化学分析方法已成为对探索地热田成因、地下水补给来源等常用的研究方法。基于近些年的研究资料,综合分析热储层结构特征和水化学特征,认为宜良地热田为层状热储型中低温地热田,其热储层为震旦系灯影组。研究热储层流体的化学分布特征以及热流体的化学成分与温度的关系等,用化学温标核算了热储层温度,认为K-Mg温标更适用于中低温地热田热储温度的估算。地热水水化学特征等基本地质特征可作为地热田规划和开发的理论基础。 展开更多
关键词 地热田 热储层 水化学特征 化学温标 宜良 云南
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医用低温温度标定方法 被引量:2
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作者 吕维敏 姜红强 +1 位作者 黄钢妹 章忠敏 《低温与超导》 CAS 北大核心 2013年第11期43-46,共4页
低温冷冻手术是以杀死病变细胞、组织,达到治愈疾病的目的,在-40℃以下的低温特别适合实体肿瘤的治疗,其治疗效果主要取决于冷冻温度和冻结界面范围,所以对温度的监测和控制十分重要。介绍了常用医用低温温度计的特点及分度,并提出了(77... 低温冷冻手术是以杀死病变细胞、组织,达到治愈疾病的目的,在-40℃以下的低温特别适合实体肿瘤的治疗,其治疗效果主要取决于冷冻温度和冻结界面范围,所以对温度的监测和控制十分重要。介绍了常用医用低温温度计的特点及分度,并提出了(77K-273K)温区的温度标定方法和标定装置控制逻辑系统。该标定装置可实现低温温度的标定,标定温度误差为0.1K。 展开更多
关键词 低温温度 温标 标定方法
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Quantum Gravity and Dark Energy Using Fractal Planck Scaling 被引量:3
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作者 L. Marek Crnjac M. S. El Naschie 《Journal of Modern Physics》 2013年第11期31-38,共8页
Following an inspiring idea due to D. Gross, we arrive at a topological Planck energy Ep and a corresponding topological Planck length effectively scaling the Planck scale from esoterically large and equally esoterica... Following an inspiring idea due to D. Gross, we arrive at a topological Planck energy Ep and a corresponding topological Planck length effectively scaling the Planck scale from esoterically large and equally esoterically small numbers to a manageably where P(H) is the famous Hardy’s probability for quantum entanglement which amounts to almost 9 percent and Based on these results, we conclude the equivalence of Einstein-Rosen “wormhole” bridges and Einstein’s Podolsky-Rosen’s spooky action at a distance. In turn these results are shown to be consistent with distinguishing two energy components which results in , namely the quantum zero set particle component which we can measure and the quantum empty set wave component which we cannot measure , i.e. the missing dark energy. Together the two components add to where E is the total energy, m is the mass and c is the speed of light. In other words, the present new derivation of the world’s most celebrated formula explains in one stroke the two most puzzling problems of quantum physics and relativistic cosmology, namely the physicomathematical meaning of the wave function and the nature of dark energy. In essence they are one and the same when looked upon from the view point of quantum-fractal geometry. 展开更多
关键词 SCALING the PLANCK scale Quantum Entanglement Dark ENERGY KALUZA-KLEIN space-time Worm HOLE Action at a Distance Unruh Temperature Hawking’s Negative ENERGY Black HOLE PHYSICS Cantorian Geometry Fractals in PHYSICS
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We Begin with a “Trivial” Condition on Massive Gravitons, and Use That to Examine Nonsingular Starts to Inflation, for GW, with GW Strength and Possible Polarization States? 被引量:1
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作者 Andrew Walcott Beckwith 《Journal of High Energy Physics, Gravitation and Cosmology》 2020年第4期692-709,共18页
Our Methodology is to construct using a “trivial” solution to massive gravitons, and a nonsingular start for expansion of the universe. Our methodology has many unintended consequences, not the least is a relationsh... Our Methodology is to construct using a “trivial” solution to massive gravitons, and a nonsingular start for expansion of the universe. Our methodology has many unintended consequences, not the least is a relationship between a small time step, t, the minimum scale factor and even the tension or property values of the initial space-time wall, and that is a consequence of a “trivial” solution taking into account “massive” gravitons. <i>I.e.</i> this solution has a mass term times the partial derivative with respect to time of an expression in brackets. The expression in brackets is the cube of a scale factor minus the square of the scale factor. Bonus that this equation is set to zero. It is deemed trivial due to the insistence of having a singular solution. If that is dropped, we have a different venue. In addition, the Friedman equation for nonsingular cosmology can have a quadratic dependence upon a density (of space-time), leading to a way to incorporate right at the surface of the initial “space-time” bubble an uncertainty principle. From there we suggest a first principle Schrodinger equation, with the caveat that time does not exist, within the space-time nonsingular bubble, but is formed right afterwards. From there we again form solutions for strength of GW signals and suggestions as to polarization states. Our quest is motivated by our last articles question, where “We conclude by stating the following question. Can extra dimensions come from a Multiverse feed into Pre-Planckian space-time? See Theorem at the end of this publication. Our answer is in the affirmative, and it has intellectual similarities to George Chapline’s work with Black hole physics”. From there we next will in future articles postulate conditions for experimental detectors for subsequent data sets to obtain falsifiable data sets. 展开更多
关键词 Minimum scale Factor Cosmological Constant space-time Bubble Penrose Singularity
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Multiverse Version of Penrose CCC Cosmology, and Enhanced Quantization Compared 被引量:1
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作者 Andrew Beckwith 《Journal of High Energy Physics, Gravitation and Cosmology》 2021年第2期559-571,共13页
We reduplicate the Book “Dark Energy” by M. Li, X.-D. Li, and Y. Wang, zero-point energy calculation with an unexpected “length” added to the “width” of a graviton wavefunction just prior to the entrance of “gr... We reduplicate the Book “Dark Energy” by M. Li, X.-D. Li, and Y. Wang, zero-point energy calculation with an unexpected “length” added to the “width” of a graviton wavefunction just prior to the entrance of “gravitons” to a small region of space-time prior to a nonsingular start to the universe. We compare this to a solution which worked out using Klauder Enhanced quantization, for the same given problem. The solution of the first Cosmological Constant problem relies upon the geometry of the multiverse generalization of CCC cosmology which is explained in this paper. The second solution used involves Klauder enhanced quantization. We look at energy given by our methods and compare and contrast it with the negative energy of the Rosen model for a mini sub-universe and estimate GW frequencies. 展开更多
关键词 Minimum scale Factor Cosmological Constant space-time Bubble Bouncing Cosmologies
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Looking at Quantization of a Wave Function, from Weber (1961), to Signals from Wavefunctions at the Mouth of a Wormhole 被引量:1
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作者 Andrew Beckwith 《Journal of High Energy Physics, Gravitation and Cosmology》 2021年第3期1037-1048,共12页
We utilize how Weber in 1961 initiated the process of quantization of early universe fields to the problem of what may be emitted at the mouth of a wormhole. While the wormhole models are well developed, there is as o... We utilize how Weber in 1961 initiated the process of quantization of early universe fields to the problem of what may be emitted at the mouth of a wormhole. While the wormhole models are well developed, there is as of yet no consensus as to how, say GW or other signals from a wormhole mouth could be quantized or made to be in adherence to a procedure Weber cribbed from Feynman, in 1961. In addition, we utilize an approximation for the Hubble parameter parameterized from Temperature using Sarkar’s H ~ Temperature relations, as given in the text. Finally, after doing this, we go to the Energy as E also ~ Temperature, and from there use E (energy) as ~ signal frequency. This gives us an idea of how to estimate frequency generated at the mouth of a wormhole. 展开更多
关键词 Minimum scale Factor Cosmological Constant space-time Bubble Bouncing Cosmologies
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Penrose Suggestion as to Pre Planck Era-Black Holes Showing Up in Present Universe Data Sets Discussed, with a Possible Candidate as to GW Radiation Which May Provide Initial CMBR Data 被引量:1
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作者 Andrew Walcott Beckwith 《Journal of High Energy Physics, Gravitation and Cosmology》 2021年第4期1264-1277,共14页
What we are doing is three-fold. First, we examine the gist of the Penrose suggestion as to signals from a prior universe showing up in the CMBR. <i>i.e. </i>, this shows up as data in the CMBR. Second, we... What we are doing is three-fold. First, we examine the gist of the Penrose suggestion as to signals from a prior universe showing up in the CMBR. <i>i.e. </i>, this shows up as data in the CMBR. Second, we give a suggestion as to how super massive black holes could be broken up s of a prior Universe cycle by pre big bang conditions, with say millions of pre-Planck black holes coming up out of a breakup of prior universe black holes. Three, we utilize a discussion as to Bose Einstein Condensates set as Gravitons as to composing the early universe black holes. The BEC formulation gives a number N of gravitons, linked to entropy, per black hole, which could lead to contributions to the alleged CMBR perturbations, which were identified by Penrose <i>et al</i>. 展开更多
关键词 Minimum scale Factor Cosmological Constant space-time Bubble Penrose Singularity Prior Universe Black Holes
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一种保守力具势的证明
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作者 李幸 《黄石高等专科学校学报》 2001年第3期29-30,33,共3页
借鉴热力学中的一种方法 ,用直观的物理论证 ,给出了保守力具势的充分性证明。
关键词 保守力 充分证明 卡诺热机 热力学温标 物理学 机械能守恒定理 热力学
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Upper Bound in Change in Initial Value for “Time Component” of Pre Planckian Metric Tensor, for a Cosmological “Constant” Universe
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作者 Andrew W. Beckwith 《Journal of High Energy Physics, Gravitation and Cosmology》 2017年第4期657-662,共6页
Beginning with Pebble’s restatement of the Roberson-Walker line element, we obtain a way, afterwards, to calculate the relationship between an initial value of the “cosmological constant” and the value of fluctuati... Beginning with Pebble’s restatement of the Roberson-Walker line element, we obtain a way, afterwards, to calculate the relationship between an initial value of the “cosmological constant” and the value of fluctuations in the time component of the metric tensor g (tot). We assume, in doing so that the value of the cosmological “constant” does not change from its initial formation. We close with speculations as to how this ties into other issues in the conclusion. 展开更多
关键词 scale Factor INITIAL space-time Volume Modified HUP
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How the Narlikar Argument of Quantum Gravity Can Be Combined with the Cosmological Constant We Calculated to Obtain Quantum Gravity Effects for Plank Length Values, as Opposed to 2 Times Planck Length Values
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作者 Andrew Beckwith 《Journal of High Energy Physics, Gravitation and Cosmology》 2021年第2期445-451,共7页
We take the results where we reduplicate the Book “Dark Energy” by M. Li, X-D. Li, and Y. Wang, zero-point energy calculation, as folded in with the Klauder methodology, as given in a prior publication. From there w... We take the results where we reduplicate the Book “Dark Energy” by M. Li, X-D. Li, and Y. Wang, zero-point energy calculation, as folded in with the Klauder methodology, as given in a prior publication. From there we first access the Rosen solution to a mini universe energy to ascertain an energy value of t, the pre-inflationary near singularity, then access what would be needed as to inject information into our universe. We then close with an argument by Narilkar as to a quantum bound on the Einstein-Hilbert action integral, so as to obtain quantum Gravity. Narlikar omits the cosmological constant. We keep it in, for our overall conclusion about the cosmological constant and its relevance to Quantum gravity. 展开更多
关键词 Minimum scale Factor Cosmological Constant space-time Bubble Bouncing Cosmologies
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