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171.
172.
A. M. M. Pruisken 《Journal of statistical physics》2001,103(3-4):569-573
I present a brief summary of the recent advancements on the unification of abelian quantum Hall states that covers the effects of disorder as well as the Coulomb interactions. I also present some exact results on the CPN–1 model at large N. In contrast to the previous expectations, this theory shows all the basic features of the quantum Hall effect, including the massless bulk excitations at =. 相似文献
173.
B. Mashhoon 《Annalen der Physik》2007,16(1):57-66
The nonlocal theory of accelerated systems is extended to linear gravitational waves as measured by accelerated observers in Minkowski spacetime. The implications of this approach are discussed. In particular, the nonlocal modifications of helicity‐rotation coupling are pointed out and a nonlocal wave equation is presented for a special class of uniformly rotating observers. The results of this study, via Einstein's heuristic principle of equivalence, provide the incentive for a nonlocal classical theory of the gravitational field. 相似文献
174.
Modification of gravitational redshift of x-ray burst produced by pulsar surface magnetoplasma 下载免费PDF全文
In this paper, the propagation of x-ray bursts in the magnetoplasma of pulsar magnetosphere is discussed. The electromagnetic interaction between x-ray bursts and magnetoplasma is described as some geometry. The electromagnetic effects of surface superstrong magnetic field and dynamic effects of outflowing magnetoplasma of pulsars are treated as an optical metric. The Gordon metric is introduced to represent the gravitational metric and optical metric. So the propagation of x-ray bursts in magnetoplasma of pulsars can be described as x-ray bursts transmitting in an effective space characterized by Gordon metric. The modification of gravitational redshift, attributed to the flowing magnetoplasma of pulsars, is obtained and it is shown that the modification is of redshift and can reach the same magnitude as the gravitational redshift for ordinary pulsars. 相似文献
175.
张一方 《新疆大学学报(理工版)》1988,(4)
基于各种已知的时空度规,我们提出一般的度规g_(?)=g_(rr)~(-1)=(1+α_1L/r+α_2L~2/r~2+…+C_1r+C_2r~(2+)…)exp(b_1L/r+b_2L~2/r~2+…d_1r+b_2r~(2+)…),并且对此讨论了黑洞存在的条件和引力转化为斥力等问题。这为短距离时也许存在的斥力提供了一种可能的理论解释。 相似文献
176.
Planar motion for a rigid body with an elastic beam in a field of central gravitational force was investigated, and both of
the orbital motion and attitude motion were under consideration. The equations of motion of the system were derived by the
variational principle, and on view point of generalized Hamiltonian dynamics, the sufficient conditions for the stability
of one class of relative equilibria were given by the energymomentum method. 相似文献
177.
Rainer Burghardt 《Foundations of Physics Letters》1995,8(6):575-582
Schwarzschild geometry exhibits interesting features when the field equations are decomposed with respect to a system of freely falling observers. We only use quantities behaving like tensors under a restricted group of transformations of the reference system. Moreover Lorentz transformations with non-constant velocities drastically change the physical picture of the theory. 相似文献
178.
Darwin L. Shannon 《Foundations of Physics Letters》1989,2(5):437-469
This article expands the development of the concept of reciprocal symmetry (Ref. 1) and points out that it is (by definition) the supersymmetry of nature. First we derive the relation between the supersymmetric, reciprocal spacetime coordinate transformations of Ref. 1 and the standard Lorentz transformations of relativity. Then we demonstrate or prove the assertion in Ref. 1 that the Robertson-Walker and the Schwarzschild metrics map (exactly) reciprocally. Finally, we derive the relativistic cosmic redshift as a function of distance of the source from the observer in the implied pseudo-dynamic Machian observable universe model. This uniquely consistent physical cosmological model is then applied to interpret the redshifts from quasars. In so doing, we find that this new interpretation puts the quasars considerably closer than does the interpretation of the big-bang theory [see Eq. (36)] and seems to remove the brightness or magnitude anomaly for these objects. As discussed in the Appendix, it also explains why the big-bang interpretation (including the inflationary universe model, etc.) gives good results. 相似文献
179.
Darwin L. Shannon 《Foundations of Physics Letters》1988,1(3):245-275
This article develops the postulate that spacetime-charge inversion invariance reflects a fundamental reciprocal symmetry in nature between the two long range forces, from which the derivation of Mach's principle (i.e., the principle that the fundamental parameters of the electromagnetically elementary charged particle are related to those describing the electromagnetically observable universe) follows quite easily. Interpreting this result, it is argued that relativity and quantum mechanics can be made conceptually compatible and mathematically consistent by this reciprocal symmetry if one realizes that relativity isboth a macroscopic, semiclassical theory (i.e., the global half of relativity, described by Eq. (1.1), including special and general relativity) and a microscopic theory (i.e., the local half of relativity, described by Eq. (2.1), including relativistic quantum mechanics and field theory). The reciprocal symmetry of nature, then, promises unique (differential and/or integral) relationships between the coordinate variables of the observers of these tworeciprocally related theories, which implies unique, consistent numerical values for the scalar curvatureR, the massM, and the critical density for closure,
c, of the observable universe [derived from the elementary particle parameters (i.e., the electron mass and Coulomb radius)]. With this symmetry we also postulate a plausible mechanism for spontaneous generation of matter from the ubiquitous (zero-mass ether) nothingness of the Dirac sea of filled negative energy states, and can consistently interpret both the positive and negative-energy state solutions of Dirac's equation for massive, spin-1/2 (i.e., fermion) particles and both the advanced and retarded potential solutions of electromagnetic field equations. It is pointed out that, with this interpretation of the advanced potential solutions from electromagnetic field theory, one can actuallyderive causality from electromagnetic theory. 相似文献
180.
In the framework of Israel formalism the Oppenheimer-Snyder gravitational collapse and a Schwarzschild cavity are studied. The motion of the Oppenheimer-Snyder thick shell can be represented by an appropriate thin shell if the expansion of the shell is great, which is valid in the flat universe. 相似文献