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On a Fractal Version of Witten’s M-Theory 被引量:12
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作者 Mohamed S. El Naschie 《International Journal of Astronomy and Astrophysics》 2016年第2期135-144,共10页
Starting from Witten’s eleven dimensional M-theory, the present work develops in an analogous way a corresponding dimensional fractal version where . Subsequently, the new fractal formalism is utilized to determine t... Starting from Witten’s eleven dimensional M-theory, the present work develops in an analogous way a corresponding dimensional fractal version where . Subsequently, the new fractal formalism is utilized to determine the measured ordinary energy density of the cosmos which turns out to be intimately linked to the new theory’s fractal dimension via non-integer irrational Lorentzian-like factor: where is Hardy’s probability of quantum entanglement. Consequently, the energy density is found from a limiting classical kinetic energy to be Here, is ‘tHooft’s renormalon of dimensional regularization. The immediate logical, mathematical and physical implication of this result is that the dark energy density of the cosmos must be in astounding agreement with cosmic measurements and observations. 展开更多
关键词 M-THEORY E-Infinity Theory Hardy’s Quantum Entanglement Transfinite Turing Computer Dark Energy Accelerated Cosmic Expansion noncommutative Geometry Superstring Theory Scale Relativity Cantorian-Fractal Spacetime Witten’s Theory ‘tHooft Renormalon Pure Gravity Penrose Tiling
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Klein-Gordon oscillators in noncommutative phase space 被引量:8
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作者 王剑华 李康 沙依甫加马力.达吾来提 《Chinese Physics C》 SCIE CAS CSCD 北大核心 2008年第10期803-806,共4页
We study the Klein-Gordon oscillators in non-commutative (NC) phase space. We find that the Klein-Gordon oscillators in NC space and NC phase-space have a similar behaviour to the dynamics of a particle in commutati... We study the Klein-Gordon oscillators in non-commutative (NC) phase space. We find that the Klein-Gordon oscillators in NC space and NC phase-space have a similar behaviour to the dynamics of a particle in commutative space moving in a uniform magnetic field. By solving the Klein-Gordon equation in NC phase space, we obtain the energy levels of the Klein-Gordon oscillators, where the additional terms related to the space-space and momentum-momentum non-commutativity are given explicitly. 展开更多
关键词 noncommutative phase space Landau problem Klein-Gordon oscillators
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SZEG TYPE FACTORIZATION THEOREM FOR NONCOMMUTATIVE HARDY-LORENTZ SPACES 被引量:5
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作者 邵晶晶 韩亚洲 《Acta Mathematica Scientia》 SCIE CSCD 2013年第6期1675-1684,共10页
We introduce noncommutative Hardy-Lorentz spaces and give the Szegō and inner-outer type factorizations of these spaces.
关键词 subdiagonal algebras noncommutative Hardy-Lorentz spaces Szegō factor-ization outer operators
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The Emergence of Spacetime from the Quantum in Three Steps 被引量:5
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作者 Mohamed S. El Naschie 《Advances in Pure Mathematics》 2016年第6期446-454,共9页
The paper presents a very simple and straight forward yet pure mathematical derivation of the structure of actual spacetime from quantum set theory. This is achieved by utilizing elements of the topological theory of ... The paper presents a very simple and straight forward yet pure mathematical derivation of the structure of actual spacetime from quantum set theory. This is achieved by utilizing elements of the topological theory of cobordism and the Menger-Urysohn dimensional theory in conjunction with von Neumann-Connes dimensional function of Klein-Penrose modular holographic boundary of the E8E8 exceptional Lie group bulk of our universe. The final result is a lucid sharp mental picture, namely that the quantum wave is an empty set representing the surface, i.e. boundary of the zero set quantum particle and in turn quantum spacetime is simply the boundary or the surface of the quantum wave empty set. The essential difference of the quantum wave and quantum spacetime is that the wave is a simple empty set while spacetime is a multi-fractal type of infinitely many empty sets with increasing degrees of emptiness. 展开更多
关键词 Quantum Spacetime Transfiite Theory noncommutative Geometry ‘tHooft-Susskind Holography Cantorian Spacetime Penrose-Connes Fractal Universe E-Infinity Theory E8 Exceptional Lie
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Noncommutative-Geometry Wormholes Based on the Casimir Effect 被引量:1
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作者 Peter K. F. Kuhfittig 《Journal of High Energy Physics, Gravitation and Cosmology》 CAS 2023年第1期295-300,共6页
While wormholes are as good a prediction of Einstein’s theory as black holes, they are subject to severe restrictions from quantum field theory. In particular, holding a wormhole open requires a violation of the null... While wormholes are as good a prediction of Einstein’s theory as black holes, they are subject to severe restrictions from quantum field theory. In particular, holding a wormhole open requires a violation of the null energy condition, calling for the existence of exotic matter. The Casimir effect has shown that this physical requirement can be met on a small scale, thereby solving a key conceptual problem. The Casimir effect does not, however, guarantee that the small-scale violation is sufficient for supporting a macroscopic wormhole. The purpose of this paper is to connect the Casimir effect to noncommutative geometry, which also aims to accommodate small-scale effects, the difference being that these can now be viewed as intrinsic properties of spacetime. As a result, the noncommutative effects can be implemented by modifying only the energy momentum tensor in the Einstein field equations, while leaving the Einstein tensor unchanged. The wormhole can therefore be macroscopic in spite of the small Casimir effect. 展开更多
关键词 Traversable Wormholes noncommutative Geometry Casimir Effect
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CONVERGENCE OF WEIGHTED AVERAGES OF MARTINGALES IN NONCOMMUTATIVE BANACH FUNCTION SPACES 被引量:4
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作者 张超 侯友良 《Acta Mathematica Scientia》 SCIE CSCD 2012年第2期735-744,共10页
Let x (xn)≥1 be a martingale on a noncommutative probability space n (M, r) and (wn)n≥1 a sequence of positive numbers such that Wn = ∑ k=1^n wk →∞ as n →∞ We prove that x = (x.)n≥1 converges in E(M... Let x (xn)≥1 be a martingale on a noncommutative probability space n (M, r) and (wn)n≥1 a sequence of positive numbers such that Wn = ∑ k=1^n wk →∞ as n →∞ We prove that x = (x.)n≥1 converges in E(M) if and only if (σn(x)n≥1 converges in E(.hd), where E(A//) is a noncommutative rearrangement invariant Banach function space with the Fatou property and σn(x) is given by σn(x) = 1/Wn ∑k=1^n wkxk, n=1, 2, .If in addition, E(Ad) has absolutely continuous norm, then, (an(x))≥1 converges in E(.M) if and only if x = (Xn)n≥1 is uniformly integrable and its limit in measure topology x∞∈ E(M). 展开更多
关键词 Weighted average noncommutative martingales noncommutative BanachfunCtion spaces uniform integrability
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Cantorian-Fractal Kinetic Energy and Potential Energy as the Ordinary and Dark Energy Density of the Cosmos Respectively 被引量:4
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作者 Mohamed S. El Naschie 《Natural Science》 2016年第12期511-540,共30页
In a one-dimension Mauldin-Williams Random Cantor Set Universe, the Sigalotti topological speed of light is  where . It follows then that the corresponding topological acceleration must be a golden mean downscali... In a one-dimension Mauldin-Williams Random Cantor Set Universe, the Sigalotti topological speed of light is  where . It follows then that the corresponding topological acceleration must be a golden mean downscaling of c namely . Since the maximal height in the one-dimensional universe must be where is the unit interval length and note that the topological mass (m) and topological dimension (D) where m = D = 5 are that of the largest unit sphere volume, we can conclude that the potential energy of classical mechanics translates to . Remembering that the kinetic energy is , then by the same logic we see that  when m = 5 is replaced by for reasons which are explained in the main body of the present work. Adding both expressions together, we find Einstein’s maximal energy . As a general conclusion, we note that within high energy cosmology, the sharp distinction between potential energy and kinetic energy of classical mechanics is blurred on the cosmic scale. Apart of being an original contribution, the article presents an almost complete bibliography on the Cantorian-fractal spacetime theory. 展开更多
关键词 Potential Dark Energy Kinetic Ordinary Energy Motion as Illusion Zenonparadoxa E-Infinity Theory noncommutative Geometry Topological Acceleration Cantorian Universe Accelerated Cosmic Expansion
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Clifford Deformations of Koszul Frobenius Algebras and Noncommutative Quadrics
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作者 Jiwei He Yu Ye 《Algebra Colloquium》 SCIE CSCD 2024年第1期63-82,共20页
A Clifford deformation of a Koszul Frobenius algebra E is a finite dimensional Z_(2)-graded algebra E(θ),which corresponds to a noncommutative quadric hypersurface E^(!)/(z)for some central regular element z∈E_(2)^(... A Clifford deformation of a Koszul Frobenius algebra E is a finite dimensional Z_(2)-graded algebra E(θ),which corresponds to a noncommutative quadric hypersurface E^(!)/(z)for some central regular element z∈E_(2)^(!).It turns out that the bounded derived category D^(b)(gr_(Z_(2))E(θ))is equivalent to the stable category of the maximal Cohen-Macaulay modules over E^(!)/(z)provided that E!is noetherian.As a consequence,E^(!)/(z)is a noncommutative isolated singularity if and only if the corresponding Clifford deformation E(θ)is a semisimple Z_(2)-graded algebra.The preceding equivalence of triangulated categories also indicates that Clifford deformations of trivial extensions of a Koszul Frobenius algebra are related to Knörrer's periodicity theorem for quadric hypersurfaces.As an application,we recover Knörrer's periodicity theorem without using matrix factorizations. 展开更多
关键词 Koszul Frobenius algebra Clifford deformation noncommutative quadric hypersurface maximal Cohen-Macaulay module
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Prolongation Structure of Semi-discrete Nonlinear Evolution Equations 被引量:6
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作者 BAI Yong-Qiang WU Ke +1 位作者 GUO Han-Ying ZHAO Wei-Zhong 《Communications in Theoretical Physics》 SCIE CAS CSCD 2007年第4X期591-600,共10页
Based on noncommutative differential calculus, we present a theory of prolongation structure for semidiscrete non/inear evolution equations. As an illustrative example, a semi-discrete model of the non/inear SchrSding... Based on noncommutative differential calculus, we present a theory of prolongation structure for semidiscrete non/inear evolution equations. As an illustrative example, a semi-discrete model of the non/inear SchrSdinger equation is discussed in terms of this theory and the corresponding Lax pairs are also given. 展开更多
关键词 noncommutative differential calculus prolongation structure Lax pair
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On limit fractional Volterra hierarchies
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作者 Lixiang Zhang Chuanzhong Li 《Communications in Theoretical Physics》 SCIE CAS CSCD 2024年第1期7-16,共10页
For the limit fractional Volterra(LFV)hierarchy,we construct the n-fold Darboux transformation and the soliton solutions.Furthermore,we extend the LFV hierarchy to the noncommutative LFV(NCLFV)hierarchy,and construct ... For the limit fractional Volterra(LFV)hierarchy,we construct the n-fold Darboux transformation and the soliton solutions.Furthermore,we extend the LFV hierarchy to the noncommutative LFV(NCLFV)hierarchy,and construct the Darboux transformation expressed by quasi determinant of the noncommutative version.Meanwhile,we establish the relationship between new and old solutions of the NCLFV hierarchy.Finally,the quasi determinant solutions of the NCLFV hierarchy are obtained. 展开更多
关键词 limit fractional Volterra hierarchy noncommutative limit fractional Volterra hierarchy Darboux transformation soliton solution quasi determinant solution
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High Energy Physics and Cosmology as Computation 被引量:3
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作者 Mohamed S. El Naschie 《American Journal of Computational Mathematics》 2016年第3期185-199,共16页
The present paper is basically written as a non-apologetic strong defence of the thesis that computation is part and parcel of a physical theory and by no means a mere numerical evaluation of the prediction of a theor... The present paper is basically written as a non-apologetic strong defence of the thesis that computation is part and parcel of a physical theory and by no means a mere numerical evaluation of the prediction of a theory which comes towards the end. Various general considerations as well as specific examples are given to illustrate and support our arguments. These examples range from the practical aspect to almost esoteric considerations but at the end, everything converges towards a unity of theory and computation presented in the form of modern fractal logic and transfinite quantum field theory in a Cantorian spacetime. It is true that all our examples are taken from physics but our discussion is applicable in equal measure to a much wider aspect of life. 展开更多
关键词 Fractal Logic E-Infinity Theory Cantorian-Fractal Spacetime P. Erdos A. Turing Computer Transfinite Turing Machine A. Connes noncommutative Geometry von Neumann Continuous Geometry Golden Mean Computer Pointless Geometry Fuzzy Sets Fuzzy Logic
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Convergence of weighted averages of noncommutative martingales 被引量:3
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作者 ZHANG Chao HOU YouLiang 《Science China Mathematics》 SCIE 2013年第4期823-830,共8页
Abstract Let x = (xn)n≥1 be a martingale on a noncommutative probability space (М,τ) and (Wn)n≥1 a sequence of positive numbers such that Wn =∑^n_k=1 wk→∞ as n→∞. We prove that x = (Xn)n≥1 converges... Abstract Let x = (xn)n≥1 be a martingale on a noncommutative probability space (М,τ) and (Wn)n≥1 a sequence of positive numbers such that Wn =∑^n_k=1 wk→∞ as n→∞. We prove that x = (Xn)n≥1 converges bilaterally almost uniformly (b.a.u.) if and only if the weighted average (σan(x))n≥1 of x converges b.a.u, to the same limit under some condition, where σn(x) is given by σn(x)=1/Wn ^n∑_k=1 wkxk,n=1,2,… Furthermore, we prove that x = (xn)n≥1 converges in Lp(М) if and only if (σ'n(x))n≥1 converges in Lp(М), where 1 ≤p 〈 ∞ .We also get a criterion of uniform integrability for a family in L1(М). 展开更多
关键词 weighted average noncommutative martingales noncommutative Lp-space uniform integrability
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NONCOMMUTATIVE ORLICZ-HARDY SPACES 被引量:2
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作者 阿布都艾尼.阿不都热西提 吐尔德别克 《Acta Mathematica Scientia》 SCIE CSCD 2014年第5期1584-1592,共9页
Let (Φ,Ψ) be a pair of complementary N-functions and HΦ(A) and HΨ(A) be the associated noncommutative Orlicz-Hardy spaces. We extend the Riesz, Szeg&#168;o and inner-outer type factorization theorems of Hp... Let (Φ,Ψ) be a pair of complementary N-functions and HΦ(A) and HΨ(A) be the associated noncommutative Orlicz-Hardy spaces. We extend the Riesz, Szeg&#168;o and inner-outer type factorization theorems of Hp(A) to this case. 展开更多
关键词 noncommutative Orlicz spaces noncommutative Orlicz-Hardy spaces Riesztype factorization Szego type factorization outer operators
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Functional Integrals and Quantum Fluctuations on Two-Dimensional Noncommutative Space-Time 被引量:5
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作者 YAN Jun 《Communications in Theoretical Physics》 SCIE CAS CSCD 2009年第9期445-448,共4页
The generalized Thirring model with impurity coupling is defined on two-dimensional noncommutativespace-time,a modified propagator and free energy are derived by means of functional integrals method.Moreover,quantum f... The generalized Thirring model with impurity coupling is defined on two-dimensional noncommutativespace-time,a modified propagator and free energy are derived by means of functional integrals method.Moreover,quantum fluctuations and excitation energies are calculated on two-dimensional black hole and soliton background. 展开更多
关键词 functional integrals quantum fluctuations noncommutative space-time
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Difference discrete connection and curvature on cubic lattice 被引量:2
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作者 WU Ke, ZHAO Weizhong & GUO Hanying Department of Mathematics, Capital Normal University, Beijing 100037, China Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100080, China 《Science China Mathematics》 SCIE 2006年第11期1458-1476,共19页
In a way similar to the continuous case formally, we define in different but equivalent manners the difference discrete connection and curvature on discrete vector bundle over the regular lattice as base space. We dea... In a way similar to the continuous case formally, we define in different but equivalent manners the difference discrete connection and curvature on discrete vector bundle over the regular lattice as base space. We deal with the difference operators as the discrete counterparts of the derivatives based upon the differential calculus on the lattice. One of the definitions can be extended to the case over the random lattice. We also discuss the relation between our approach and the lattice gauge theory and apply to the discrete integrable systems. 展开更多
关键词 DISCRETE connection DISCRETE curvature noncommutative calculus lattice gauge theory DISCRETE LAX pair.
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Noncommutative Differential Calculus and Its Application on the Lattice 被引量:2
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作者 刘震 白永强 李起升 《Chinese Quarterly Journal of Mathematics》 CSCD 北大核心 2007年第2期245-251,共7页
By introducing the noncommutative differential calculus on the function space of the infinite/finite set and construct a homotopy operator, one prove the analogue of the Poincare lemma for the difference complex. As a... By introducing the noncommutative differential calculus on the function space of the infinite/finite set and construct a homotopy operator, one prove the analogue of the Poincare lemma for the difference complex. As an application of the differential calculus, a two dimensional integral model can be derived from the noncommutative differential calculus. 展开更多
关键词 noncommutative geometry noncommutative differential calculus Poincare lemma Toda lattice equation
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POISSON ALGEBRA STRUCTURES ON sp_(2■)(■_Q)WITH NULLITY m 被引量:2
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作者 靳全勤 佟洁 《Acta Mathematica Scientia》 SCIE CSCD 2007年第3期473-490,共18页
Noncommutative Poisson algebras are the algebras having both an associative algebra structure and a Lie algebra structure together with the Leibniz law. In this article,the noncommutative Poisson algebra structures on... Noncommutative Poisson algebras are the algebras having both an associative algebra structure and a Lie algebra structure together with the Leibniz law. In this article,the noncommutative Poisson algebra structures on sp2l(^~CQ) are determined. 展开更多
关键词 noncommutative Poisson algebras Leibniz law
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TOEPLITZ OPERATORS ASSOCIATED WITH SEMIFINITE VON NEUMANN ALGEBRA 被引量:2
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作者 闫成 吐尔德别克 《Acta Mathematica Scientia》 SCIE CSCD 2015年第1期182-188,共7页
Let H^2(M) be a noncommutative Hardy space associated with semifinite von Neumann algebra M, we get the connection between numerical spectrum and the spectrum of Toeplitz operator Tt acting on H^2(M), and the norm... Let H^2(M) be a noncommutative Hardy space associated with semifinite von Neumann algebra M, we get the connection between numerical spectrum and the spectrum of Toeplitz operator Tt acting on H^2(M), and the norm of Toeplitz operator Tt is equivalent to ||t|| when t is hyponormal operator in M. 展开更多
关键词 numerical spectrum hyponormal toeplitz operator semifinite yon Neumann algebra noncommutative Hardy space
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The Gap Labelling Integrated Density of States for a Quasi Crystal Universe Is Identical to the Observed 4.5 Percent Ordinary Energy Density of the Cosmos 被引量:2
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作者 Mohamed S. El Naschie 《Natural Science》 2014年第16期1259-1265,共7页
Condense matter methods and mathematical models used in solving problems in solid state physics are transformed to high energy quantum cosmology in order to estimate the magnitude of the missing dark energy of the uni... Condense matter methods and mathematical models used in solving problems in solid state physics are transformed to high energy quantum cosmology in order to estimate the magnitude of the missing dark energy of the universe. Looking at the problem from this novel viewpoint was rewarded by a rather unexpected result, namely that the gap labelling method of integrated density of states for three dimensional icosahedral quasicrystals is identical to the previously measured and theoretically concluded ordinary energy density of the universe, namely a mere 4.5 percent of Einstein’s energy density, i.e. E(O) = mc2/22 where E is the energy, m is the mass and c is the speed of light. Consequently we conclude that the missing dark energy density must be E(D) = 1 - E(O) = mc2(21/22) in agreement with all known cosmological measurements and observations. This result could also be interpreted as a strong evidence for the self similarity of the geometry of spacetime, which is an expression of its basic fractal nature. 展开更多
关键词 E-INFINITY Theory Fractal-Witten M-THEORY GAP Labelling Theorem DENSITY of States Dark Energy DENSITY noncommutative Geometry K-THEORY Dimension Group
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A note on quantum odometers
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作者 Slawomir Klimek Matt McBride J.Wilson Peoples 《Science China Mathematics》 SCIE CSCD 2023年第7期1555-1568,共14页
We discuss various aspects of noncommutative geometry of smooth subalgebras of Bunce-Deddens-Toeplitz algebras.
关键词 noncommutative geometry DERIVATION smooth subalgebra K-THEORY
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