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Quantum Dark Energy from the Hyperbolic Transfinite Cantorian Geometry of the Cosmos 被引量:1
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作者 Mohamed S. El Naschie 《Natural Science》 2016年第3期152-159,共8页
The quintessence of hyperbolic geometry is transferred to a transfinite Cantorian-fractal setting in the present work. Starting from the building block of E-infinity Cantorian spacetime theory, namely a quantum pre-pa... The quintessence of hyperbolic geometry is transferred to a transfinite Cantorian-fractal setting in the present work. Starting from the building block of E-infinity Cantorian spacetime theory, namely a quantum pre-particle zero set as a core and a quantum pre-wave empty set as cobordism or surface of the core, we connect the interaction of two such self similar units to a compact four dimensional manifold and a corresponding holographic boundary akin to the compactified Klein modular curve with SL(2,7) symmetry. Based on this model in conjunction with a 4D compact hy- perbolic manifold M(4) and the associated general theory, the so obtained ordinary and dark en- ergy density of the cosmos is found to be in complete agreement with previous analysis as well as cosmic measurements and observations such as WMAP and Type 1a supernova. 展开更多
关键词 Dark Energy Accelerated Cosmic Expansion Hyperbolic Geometry Fractal Geometry Transfinite set Theory ‘tHooft Dimensional Regularization Hardy’s Quantum Entanglement Davis Hyperbolic Manifold Compactified Klein Modular Curve Fractal Counting lie symmetry groups Stein Spaces
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广义Hirota-Satsuma耦合KdV方程的对称及应用 被引量:1
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作者 康周正 任文秀 王善微 《黑龙江大学自然科学学报》 CAS 北大核心 2011年第6期813-817,共5页
将广义Hirota-Satsuma耦合KdV方程作为研究对象,首先借助古典Lie点对称法研究了它的对称群理论,并且利用对称群的思想得到了四组新形式的精确解;其次,探讨了该方程允许的全部四阶对称;最后,作为对称在物理上的重要应用,还进一步地分情... 将广义Hirota-Satsuma耦合KdV方程作为研究对象,首先借助古典Lie点对称法研究了它的对称群理论,并且利用对称群的思想得到了四组新形式的精确解;其次,探讨了该方程允许的全部四阶对称;最后,作为对称在物理上的重要应用,还进一步地分情形给出了它的五条守恒律。 展开更多
关键词 lie对称群 精确解 四阶对称 守恒律
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孤子方程的对称群与方程间的变换
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作者 王瑞卿 《纺织高校基础科学学报》 CAS 2000年第1期16-19,共4页
利用孤子方程的李对称群的同态变换 ,得到了KdV方程与一般MKdV方程之间存在广义Miura变换的充要条件及Heisenberg方程族与新Heisenberg方程族间的变换式 .
关键词 李对称群 KDV方程 同态变换 孤子方程
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广义四阶色散方程的对称约化和精确解(英文) 被引量:9
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作者 王振立 刘希强 《量子电子学报》 CAS CSCD 北大核心 2014年第3期264-272,共9页
运用经典对称方法解决广义四阶色散方程问题,得到对称约化和群不变解,包括双曲函数解,三角周期解和孤立子解,最后得出该问题的守恒律。
关键词 非线性方程 孤立子解 李点对称 对称约化 守恒律
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Einstein’s Dark Energy via Similarity Equivalence, ‘tHooft Dimensional Regularization and Lie Symmetry Groups 被引量:4
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作者 Mohamed S. El Naschie 《International Journal of Astronomy and Astrophysics》 2016年第1期56-81,共26页
Realizing the physical reality of ‘tHooft’s self similar and dimensionaly regularized fractal-like spacetime as well as being inspired by a note worthy anecdote involving the great mathematician of Alexandria, Pytha... Realizing the physical reality of ‘tHooft’s self similar and dimensionaly regularized fractal-like spacetime as well as being inspired by a note worthy anecdote involving the great mathematician of Alexandria, Pythagoras and the larger than life man of theoretical physics Einstein, we utilize some deep mathematical connections between equivalence classes of equivalence relations and E-infinity theory quotient space. We started from the basic principles of self similarity which came to prominence in science with the advent of the modern theory of nonlinear dynamical systems, deterministic chaos and fractals. This fundamental logico-mathematical thread related to partially ordered sets is then applied to show how the classical Newton’s kinetic energy E = 1/2mv<sup>2</sup> leads to Einstein’s celebrated maximal energy equation E = mc<sup>2</sup> and how in turn this can be dissected into the ordinary energy density E(O) = mc<sup>2</sup>/22 and the dark energy density E(D) = mc<sup>2</sup>(21/22) of the cosmos where m is the mass;v is the velocity and c is the speed of light. The important role of the exceptional Lie symmetry groups and ‘tHooft-Veltman-Wilson dimensional regularization in fractal spacetime played in the above is also highlighted. The author hopes that the unusual character of the analysis and presentation of the present work may be taken in a positive vein as seriously attempting to propose a different and new way of doing theoretical physics by treating number theory, set theory, group theory, experimental physics as well as conventional theoretical physics on the same footing and letting all these diverse tools lead us to the answer of fundamental questions without fear of being labelled in one way or another. 展开更多
关键词 Equivalence Relation SCALING Intermediate Asymptotic Golden Mean Scaling Einstein Self Similarity Fractal Scaling E-INFINITY Special Relativity Random Cantor Sets ‘tHooft Regularization Fractal Quantum Field Quantum Gravity Exceptional lie symmetry groups
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耦合KdV方程组的对称,精确解和守恒律 被引量:5
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作者 许斌 刘希强 刘玉堂 《应用数学学报》 CSCD 北大核心 2010年第1期118-123,共6页
通过利用修正的CK直接方法建立了耦合KdV方程组的对称群理论.利用对称群理论和耦合KdV方程组的旧解得到了它们的新的精确解.基于上述理论和耦合KdV方程组的共轭方程组的理论,得到了耦合KdV方程组的守恒律.
关键词 耦合KDV方程组 精确解 李点对称群 守恒律
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From Witten’s 462 Supercharges of 5-D Branes in Eleven Dimensions to the 95.5 Percent Cosmic Dark Energy Density behind the Accelerated Expansion of the Universe 被引量:1
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作者 Mohamed S. El Naschie 《Journal of Quantum Information Science》 2016年第2期57-61,共5页
The measured 95.5% dark energy density of the cosmos presumed to be behind the observed accelerated cosmic expansion is determined theoretically based upon Witten’s five branes in eleven dimensions theory. We show th... The measured 95.5% dark energy density of the cosmos presumed to be behind the observed accelerated cosmic expansion is determined theoretically based upon Witten’s five branes in eleven dimensions theory. We show that the said dark energy density is easily found from the ratio of the 462 states of the five dimensional Branes to the total number of states, namely 528 minus the 44 degrees of freedom of the vacuum, i.e. , almost exactly as found in WMAP and Type 1a supernova measurements. 展开更多
关键词 Number Theory Witten Branes Dark Energy Superstrings Cosmic Expansion Type 1a Supernova E-INFINITY Exceptional lie symmetry groups
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Bretherton方程的对称约化和精确解 被引量:1
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作者 徐光耀 宿青 《大学数学》 2017年第2期16-19,共4页
运用李群对称方法解决Bretherton方程问题,得到方程的对称约化和群不变解,比如幂级数解,最后得出该问题的守恒率.
关键词 Bretherton方程 李群对称 相识约化 守恒率
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Boiti-Tu方程的相似解 被引量:1
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作者 王瑞卿 江世璟 《燕山大学学报》 CAS 2000年第1期90-92,共3页
给出了Boiti-Tu方程的李对称群,它是一个无限维李群,并且得到了方程的各种约化,讨论了约化方程的解性质。
关键词 李对称群 相似约化 PAINLEVE性质 Boiti-Tu方程
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p中心仿射流的最优系统及群不变解
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作者 武冬冬 沃维丰 《扬州大学学报(自然科学版)》 CAS 北大核心 2018年第4期1-3,12,共4页
利用李点对称群理论,研究了p-中心仿射流的对称群,通过构造几何流的最优系统,对方程进行对称约化,并讨论了群不变解,最终求得p-中心仿射流的部分群不变解.
关键词 p-中心仿射流 群不变解 lie对称群 最优系统
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一类新的高阶非线性退化抛物方程的对称及群不变解
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作者 王丽真 黄晴 +1 位作者 亢小玉 左苏丽 《陕西师范大学学报(自然科学版)》 CAS CSCD 北大核心 2014年第1期11-14,共4页
研究了一类高阶非线性退化抛物方程的精确解.利用Lie对称群的方法,建立了该方程由4个向量场生成的有限维对称群及7个非等价子代数组成的一维优化系统,得到p=2、n=1时Newton流体的两类群不变解和p=3、n=1时幂律流体的3类群不变解.结果表... 研究了一类高阶非线性退化抛物方程的精确解.利用Lie对称群的方法,建立了该方程由4个向量场生成的有限维对称群及7个非等价子代数组成的一维优化系统,得到p=2、n=1时Newton流体的两类群不变解和p=3、n=1时幂律流体的3类群不变解.结果表明:对于这两种情形,所研究的流体均存在有限时间内发生爆破的群不变解. 展开更多
关键词 非线性退化抛物方程 lie对称群 优化系统 群不变解
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Rosenau-Hyman方程的对称分析与精确解
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作者 赵琳 《纺织高校基础科学学报》 CAS 2015年第1期54-57,共4页
为了研究Rosenau-Hyman方程的Lie对称及精确解问题,首先利用Lie对称方法分析其偏微分形式,得到Rosenau-Hyman的Lie对称群以及此对称群所对应的行波解;其次利用Jacobi椭圆函数试探法得到该方程的精确解.这些解对进一步研究Rosenau-Hyman... 为了研究Rosenau-Hyman方程的Lie对称及精确解问题,首先利用Lie对称方法分析其偏微分形式,得到Rosenau-Hyman的Lie对称群以及此对称群所对应的行波解;其次利用Jacobi椭圆函数试探法得到该方程的精确解.这些解对进一步研究Rosenau-Hyman方程所描述的物理现象具有一定的应用价值. 展开更多
关键词 Rosenau-Hyman方程 lie对称群 行波解 Jacobi椭圆函数试探法
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李群方法求解Regularized-Long-Wave方程及对其解的参数分析
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作者 崔春晓 许晓革 孟祥花 《北京信息科技大学学报(自然科学版)》 2014年第3期49-54,共6页
运用李对称群方法,通过构造群不变量作为函数变换的基础,使偏微分方程减少一个自变量得到化简,约化为常微分方程并求其解析解。应用此法求出Regularized-Long-Wave方程的全部李点对称,并用特殊的对称将其约化为相应的常微分方程,对其中... 运用李对称群方法,通过构造群不变量作为函数变换的基础,使偏微分方程减少一个自变量得到化简,约化为常微分方程并求其解析解。应用此法求出Regularized-Long-Wave方程的全部李点对称,并用特殊的对称将其约化为相应的常微分方程,对其中一种常微分方程进行求解。利用海洋水文资料对求出的解进行内波参数分析,发现无论对于下降型内波还是上升型内波,密度跃层差异△ρ/ρ越大,方程参数线性速度C_0越大,内波纵向位移越小。对于下降型内波来说,密度跃层深度h_1越大,线性速度C_0越大,则方程一阶非线性项系数α越大,弥散项系数β也越大,从而内波纵向位移越大;对于上升型内波而言,密度跃层深度h_1越小,线性速度C_0越大,则α越小,β越大,从而内波纵向位移越大。 展开更多
关键词 Regularized-Long-Wave方程 李对称群 海洋内波 纵向位移
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Entanglement of E8E8 Exceptional Lie Symmetry Group Dark Energy, Einstein’s Maximal Total Energy and the Hartle-Hawking No Boundary Proposal as the Explanation for Dark Energy 被引量:7
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作者 Mohamed S. El Naschie 《World Journal of Condensed Matter Physics》 2014年第2期74-77,共4页
The present note is concerned with two connected and highly important fundamental questions of physics and cosmology, namely if E8E8 Lie symmetry group describes the universe and where cosmic dark energy comes from. F... The present note is concerned with two connected and highly important fundamental questions of physics and cosmology, namely if E8E8 Lie symmetry group describes the universe and where cosmic dark energy comes from. Furthermore, we reason following Wheeler, Hartle and Hawking that since the boundary of a boundary is an empty set which models the quantum wave of the cosmos, then it follows that dark energy is a fundamental physical phenomenon associated with the boundary of the holographic boundary. This leads directly to a clopen universe which is its own Penrose tiling-like multiverse with energy density in full agreement with COBE, WMAP and Type 1a supernova cosmic measurements. 展开更多
关键词 E8 Exceptional lie symmetry group Dark Energy Einstein’s Relativity E-INFINITY Theory Wheeler BOUNDARY of a BOUNDARY Hartle-Hawking NO BOUNDARY PROPOSAL Penrose Tiling Multiverse
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Lie symmetry group transformation for MHD natural convection flow of nanofluid over linearly porous stretching sheet in presence of thermal stratification 被引量:2
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作者 A.B.ROSMILA R.KANDASAMY I.MUHAIMIN 《Applied Mathematics and Mechanics(English Edition)》 SCIE EI 2012年第5期593-604,共12页
The magnetohydrodynamics (MHD) convection flow and heat transfer of an incompressible viscous nanofluid past a semi-infinite vertical stretching sheet in the pres- ence of thermal stratification are examined. The pa... The magnetohydrodynamics (MHD) convection flow and heat transfer of an incompressible viscous nanofluid past a semi-infinite vertical stretching sheet in the pres- ence of thermal stratification are examined. The partial differential equations governing the problem under consideration are transformed by a special form of the Lie symmetry group transformations, i.e., a one-parameter group of transformations into a system of ordinary differential equations which are numerically solved using the Runge-Kutta-Gill- based shooting method. It is concluded that the flow field, temperature, and nanoparticle volume fraction profiles are significantly influenced by the thermal stratification and the magnetic field. 展开更多
关键词 lie symmetry group transformation NANOFLUID porous medium thermalstratification magnetic field
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纳米流体流经热分层线性多孔伸展平面时的MHD自然对流及其Lie对称群变换
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作者 A·K·罗斯米拉 R·坎达沙密 I·姆哈敏 《应用数学和力学》 CSCD 北大核心 2012年第5期562-573,共12页
就不可压缩粘性纳米流体,流经半无限垂直伸展平面并计及热分层时,研究该流体的MHD自然对流和热交换.通过特定形式的Lie对称群变换,即单参数群变换,将所考虑问题的偏微分控制方程变换为常微分方程组.然后,使用基于打靶法的Runge Kutta G... 就不可压缩粘性纳米流体,流经半无限垂直伸展平面并计及热分层时,研究该流体的MHD自然对流和热交换.通过特定形式的Lie对称群变换,即单参数群变换,将所考虑问题的偏微分控制方程变换为常微分方程组.然后,使用基于打靶法的Runge Kutta Gill法进行数值求解.最后得到结论:流场、温度和纳米颗粒体积率受热分层和磁场的影响很显著. 展开更多
关键词 lie对称群变换 纳米流体 多孔介质 热分层 磁场
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