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There are 17 papers published in subject: > since this site started. |
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1. Observational relativity: bringing to light the essence of relativistic effects | |||
RUAN Xiaogang | |||
Physics 24 April 2018 | |||
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Abstract:This paper theoretically deduces the invariance of information-wave speed (IIWS) and the general Lorentz transformation (GLT) from the most basic physical properties, then establishes the theory of observational relativity (OR), and unifies Einstein\'s special relativity (SR) and de Broglie\'s matter-wave theory. More than 100 years ago, Einstein proposed the hypothesis of invariance of light speed (ILS) according to the Michelson-Morley experiment; then theoretically deduced the Lorentz transformation from ILS, established his SR, and brought to light the relativistic effects of matter motion. Up till today, however, people still don\'t know why the speed of light is invariant or cannot be exceeded, and why the photon has no rest mass. In fact, the Michelson-Morley experiment does not mean ILS, but does demonstrate an extremely important phenomenon in physical observation: the speed of information wave (IW) is observationally invariant. OR brings to light the cause of ILS formation, and elucidates the origin and essence of relativistic effects: all the relativistic effects are observational effects. OR suggests that, only if light works as IW, can ILS be valid as a special case of IIWS, and can Einstein\'s SR hold true as a partial theory of OR. OR strictly follows Bohr\'s correspondence principle:GLT reduces to Lorentz transfromation when the IW speed is the speed of light; GLT reduces to Galilean transformation if the IW speed is infinite. | |||
TO cite this article:RUAN Xiaogang. Observational relativity: bringing to light the essence of relativistic effects[OL].[24 April 2018] http://en.paper.edu.cn/en_releasepaper/content/4744495 |
2. The gravitational theory with special and general relativity expansions and its graviton solutions | |||
Chen Guang | |||
Physics 22 February 2016 | |||
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Abstract:We believe that, the latest LIGO gravitational wave detection results is undoubtedly a major achievement of general relativity experimental studies and an important event in the history of human science development. But the direct discovery of gravitational waves does not mean that general relativity is already a complete theory of gravity. On the contrary, it demonstrates the inadequacy of Einstein gravitational theory. Because gravitational waves, as the rigorous solutions of the linear gravitational field equations, do not satisfy the nonlinear Einstein equations. Thus, gravitational waves can not be space-time waves, but only probability waves of the gravitons. In order to solve a series of problems including gravitational waves, based on the quantized mathematics and new equivalence principle,we improve Einstein gravitational theory to include curved space-time geometry and linear gravity, thus forming a gravitational theory with special and general relativity expansions. Thereafter, the graviton solutions of this theory are obtained, and the wave-particle duality of the gravitons in curved space-time background are explained. In particular, we illustrate the internal structure and the external behavior of the gravitons, define extended graviton and non-extended graviton, as well as positive momentum graviton and negative momentum graviton; deduce the quantization and uncertainty of background space-time geometry, and explain the quantization of space-time and energy. Correspondingly, we introduce classical gravitational strings and define quantum graviton states,reveal the probability nature of gravitational strings and describe the change of graviton states with respect to graviton energy and background space-time geometry; describe the interaction of gravitons with matter. This paper also predicts the possible developments of our gravitational theory and explains the significant impacts of our graviton solutions on the existing physical theories. Finally, we point out that, as the average approximation of gravitational strings, gravitational waves can transmit energy and information,but do not warp the space-time they pass through. As for the LIGO discovery, the interference effects are only the results of the laser transmission path length modulations caused by the gravitons with positive and negative momentums, which act on the mirrors in the detectors and make them displacements. This no doubt will change our gravitational wave observation methods and data analysis. | |||
TO cite this article:Chen Guang. The gravitational theory with special and general relativity expansions and its graviton solutions[OL].[22 February 2016] http://en.paper.edu.cn/en_releasepaper/content/4675982 |
3. A Cyclic Cosmological Model in the Landscape Scenario | |||
SUN Cheng-Yi | |||
Physics 13 December 2013 | |||
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Abstract:KKLT give a mechanism to generate de Sitter vacua instring theory. And the scenario, emph{Landscape}, is suggested toexplain the problem of the cosmological constant. In this paper,adopting a simple potential describing the emph{landscape}, weinvestigate the decay of the vacuum and the evolution of theuniverse after the decay. We find that the big crunch of theuniverse is inevitable. But, according to the modified Friedmannequation, the singularity of the big crunch isavoided. Furthermore, we find that this gives a cyclic cosmologicalmodel. | |||
TO cite this article:SUN Cheng-Yi. A Cyclic Cosmological Model in the Landscape Scenario[OL].[13 December 2013] http://en.paper.edu.cn/en_releasepaper/content/4575029 |
4. Weak Gravity Conjecture and Holographic/Agegraphic Dark Energy | |||
SUN Cheng-Yi | |||
Physics 05 December 2013 | |||
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Abstract:A criterion that should be satisfied in the inflation andquintessence models has been motivated from the weak gravityconjecture (WGC) by Huang. However, it is found that the criterionis inconsistent with the holographic dark energy (HDE) and newagegraphic dark energy (NADE) models. In the note, we firstly showthat in the HDE and NADE models the criterion should be be replacedrespectively by two new criterions. Secondly, we apply the newcriterions indicated by WGC to survey the two models. We find thatthe contradiction between WGC and the NADE model is removed when thenew criterion is used. In the HDE model, we find the effects of thespatial curvature and the interaction should be considered in orderto match the new criterion. | |||
TO cite this article:SUN Cheng-Yi. Weak Gravity Conjecture and Holographic/Agegraphic Dark Energy[OL].[ 5 December 2013] http://en.paper.edu.cn/en_releasepaper/content/4573194 |
5. Area spectrum and entropy spectrum of Schwarzschild black hole inspired by noncommutative geometry | |||
Wei Shaowen,Liu Yuxiao,Zhao Zhenhua,Fu Chun-e | |||
Physics 18 October 2012 | |||
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Abstract:It is known that, in the noncommutative Schwarzschild black hole spacetime, the point-like object is replaced by the smeared object, whose mass density is described by a Gaussian distribution of minimal width √ ̄θ with θ the noncommutative parameter. In this paper, the area spectrum and entropy spectrum for the noncommutative Schwarzschild black hole with 0≤θ≤(M/1.90412)2 are investigated. By the use of the new physical interpretation of the quasinormal modes of black holes presented by Maggiore, we obtain the quantized area spectrum and entropy spectrum with the modified Hod's and Kunstatter's methods, respectively. The results show that: (1) The area spectrum and entropy spectrum are discrete. (2) The spectrum spacings are dependent on the parameter M/√ ̄θ. (3) The spacing of the area spectrum of the noncommutative Schwarzschild black hole is smaller than that of the conventional one. So does the spacing of the entropy spectrum. (4) The spectra from the two methods are consistent with each other. | |||
TO cite this article:Wei Shaowen,Liu Yuxiao,Zhao Zhenhua, et al. Area spectrum and entropy spectrum of Schwarzschild black hole inspired by noncommutative geometry[OL].[18 October 2012] http://en.paper.edu.cn/en_releasepaper/content/4491625 |
6. A derivation of inertial mass equal to gravitational mass and the origin of inertia | |||
Dai Youping ,Dai Xinping | |||
Physics 21 January 2012 | |||
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Abstract:In this paper,an affect of the gravitational potential generated by all matter in the universe is discussed. Studies shown that there is a certain derivation of inertial mass equal to gravitational mass, and can get the origin of inertia. We find that Lorenz transformation, mass-energy formula and Newtonian mechanics are all affected by the gravitational potential of all matter in the universe, and the square velocity of light is qeual to this gravitational potential too. Finally, the meaning of parameter c in Einstein equations is discussed. | |||
TO cite this article:Dai Youping ,Dai Xinping . A derivation of inertial mass equal to gravitational mass and the origin of inertia[OL].[21 January 2012] http://en.paper.edu.cn/en_releasepaper/content/4463555 |
7. Relativistic Theory of Superluminal Particles | |||
An Yong Li | |||
Physics 26 November 2011 | |||
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Abstract:Since some experiments have found superluminality, we assume that the particles in the universe are divided into three classes: the subluminal, luminal and superluminal particles by the speed of light, their energy-momenum relations are E2 = m2c4 + c2p2, E2 = c2p2, and E2 + m2c4 = c2p2, respectively. The Einstein's theory of relativity still holds and is consummated by the existence of superluminal particles, and the Lorentz symmetry of the spacetime is also not violated. There should have two sets of inertial reference systems: subluminal and superluminal reference systems. Two inertial reference systems in each set are linked by Lorentz transformations, but superluminal coordinate transformations between the two sets do not exist in the 1+3 dimensional spacetime. So the physical laws have different expressions in the two sets of inertial reference systems, the principle of special relativity should be revised. | |||
TO cite this article:An Yong Li. Relativistic Theory of Superluminal Particles[OL].[26 November 2011] http://en.paper.edu.cn/en_releasepaper/content/4452057 |
8. Mass Is Not Constant in a Gravitational Field | |||
Zhan Likui | |||
Physics 30 November 2010 | |||
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Abstract:Various gravitation theories predict that a star with large enough mass will shrink down to a final point, gravitational singularity. The gravitational singularity is always one of the difficult problems in the world. This work reviews some kinds of difficulties which relates to gravitational fields. Based on experimental analysis and theoretical verification, a new hypothesis regarding mass in gravitational fields is presented. In this case, the gravitational singularity no longer appears and the meaning of gravitation is simple to determine. The hypothesis is also the result that various facts and theories have been repeatedly weighed. In the end, a method for verification of the hypothesis is proposed. | |||
TO cite this article:Zhan Likui. Mass Is Not Constant in a Gravitational Field[OL].[30 November 2010] http://en.paper.edu.cn/en_releasepaper/content/4394178 |
9. Temperature and Energy of 4-dimensional Black Holes from Entropic Force | |||
Liu Yuxiao ,Wang Yongqiang ,Wei Shaowen | |||
Physics 17 June 2010 | |||
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Abstract:We investigate the temperature and energy on holographic screens for 4-dimensional black holes with the entropic force idea proposed by Verlinde. We find that the “Unruh-Verlinde temperature” is equal to the Hawking temperature on the horizon and can be considered as a generalize Hawking temperature on the holographic screen outside the horizons. The energy on the holographic screen is not the black hole mass $M$ but the reduced mass $M_0$, which is related to the black hole parameters. With the replacement of the black hole mass $M$ by the reduced mass $M_0$, the entropic force can be written as $F= frac{GmM_0}{r^2}$, which could be tested by experiments. | |||
TO cite this article:Liu Yuxiao ,Wang Yongqiang ,Wei Shaowen . Temperature and Energy of 4-dimensional Black Holes from Entropic Force[J].Classical and Quantum Gravity,2010,27(18):185002~185002. |
10. The Spinor Connection and its Dynamical Effects | |||
Gu Yingqiu | |||
Physics 16 April 2009 | |||
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Abstract:The current formalisms of covariant derivatives for a spinor take compact forms, and the geometrical and dynamical effects of the spinor connection are covered under the abstract symbols. The practical calculations for the spinor connection in these formalisms are usually a tiresome and fallible task. In this paper, we divide the spinor connection into two vectors $\\Upsilon_\\mu$ and $\\Omega_\\mu$, where $\\Upsilon_\\mu$ is mainly related to the geometrical calculations, but $\\Omega_\\mu$ leads to gravimagnetic effects. The expression is valid for both the Weyl spinor and the Dirac bispinor, which is not only more convenient for calculation, but also highlights the physical meanings of the spinor connection. On this foundation, we derive the complete classical mechanics from the dynamical equation and get some interesting results. We find in the space-time with intrinsically nondiagonal metric, the orbit of a spinor deviates from the geodesic slightly, so the principle of equivalence is broken by the spinors moving at high speed. | |||
TO cite this article:Gu Yingqiu . The Spinor Connection and its Dynamical Effects[OL].[16 April 2009] http://en.paper.edu.cn/en_releasepaper/content/31458 |
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