搜索结果: 46-60 共查到“理学 law”相关记录179条 . 查询时间(0.146 秒)
Hubble's law and faster than light expansion speeds
Hubble's law light expansion speeds four-velocity vector
2011/8/18
Abstract: Naively applying Hubble's law to a sufficiently distant object gives a receding velocity larger than the speed of light. By discussing a very similar situation in special relativity, we argu...
Power-law entropy-corrected HDE and NADE in Brans-Dicke cosmology
Power-law entropy-corrected HDE Brans-Dicke cosmology
2011/10/13
Considering the power-law corrections to the black hole entropy, which appear in dealing with the entanglement of quantum fields in and out the horizon, the holographic energy density is modified acco...
Hubble's law and faster than light expansion speeds
Hubble's law faster than light expansion speeds
2011/10/14
Naively applying Hubble's law to a sufficiently distant object gives a receding velocity larger than the speed of light. By discussing a very similar situation in special relativity, we argue that Hub...
Stability of planar fronts for a non--local phase kinetics equation with a conservation law in $D \le 3$
phase kinetics fronts non-linear stability non local equation
2011/9/21
Abstract: We consider, in a $D-$dimensional cylinder, a non--local evolution equation that describes the evolution of the local magnetization in a continuum limit of an Ising spin system with Kawasaki...
Mandelbrot Law of Evolving Networks
Mandelbrot Law Evolving Networks Degree distributions power-law exponent
2011/8/11
Abstract: Degree distributions of many real networks are known to follow the Mandelbrot law, which can be considered as an extension of the power law that determined by not only the power-law exponent...
A modified star formation law as a solution to open problems in galaxy evolution
galaxies: evolution – galaxies: formation – galaxies: stellar content –galaxies: haloes
2011/10/13
In order to reproduce the low mass end of the stellar mass function, most current models of galaxy evolution invoke very efficient supernova feedback. This solution seems to suffer from several shortc...
Convergence of Wigner integrals to the tetilla law
Contractions Free Brownian motion Free cumulants Free probability Non-central limit theorems Wigner chaos
2011/9/14
Abstract: If x and y are two free semicircular random variables in a non-commutative probability space (A,E) and have variance one, we call the law of 2^{-1/2}(xy+yx) the tetilla law (and we denote it...
A power law of order 1/4 for critical mean-field Swendsen-Wang dynamics
critical mean-field Swendsen-Wang dynamics Probability
2011/9/9
Abstract: The Swendsen-Wang dynamics is a Markov chain widely used by physicists to sample from the Boltzmann-Gibbs distribution of the Ising model. Cooper, Dyer, Frieze and Rue proved that on the com...
Convergence in law for the branching random walk seen from its tip
branching random walk Convergence its tip Probability
2011/9/5
Abstract: Considering a critical branching random walk on the real line. In a recent paper, Aidekon [3] developed a powerful method to obtain the convergence in law of its minimum after a log-factor n...
A 0-1 law for vertex-reinforced random walks on $\mathbb{Z}$ with weight of order $k^α$, $α<1/2$
vertex-reinforced random Probability
2011/9/5
Abstract: We prove that Vertex Reinforced Random Walk on $\mathbb{Z}$ with weight of order $k^\alpha$, with $\alpha\in [0,1/2)$, is either almost surely recurrent or almost surely transient. This impr...
Evidence for mild deviation from power-law distribution of electrons in relativistic shocks: GRB 090902B
radiation mechanisms: non-thermal - methods: analytical - methods: numerical- gamma-rays: bursts, theory - gamma-ray burst: individual: GRB090902B
2011/9/29
Many previous studies have determined that the long lasting emission at X-ray, optical and radio wavelengths from gamma-ray bursts (GRBs), called the afterglow, is likely produced by the external forw...
Studying the spatially resolved Schmidt-Kennicutt law in interacting galaxies: the case of Arp 158
Galaxies: interactions – Galaxies: star formation
2011/9/28
Recent studies have shown that star formation in mergers does not seem to follow the same Schmidt-Kennicutt (KS) relation as in spiral disks, presenting a higher star formation rate (SFR) for a given ...
Violation of the first law of black hole thermodynamics in $f(T)$ gravity
Violation first law black hole thermodynamics $f(T)$ gravity
2011/10/18
We prove that the first law of black hole thermodynamics, $\delta Q=T\delta S$, is violated in $f(T)$ gravity. As a result, there always exists entropy production, which implies that the black hole th...
Magneto Hydrodynamic Orthogonal Stagnation Point Flow of a Power-Law Fluid Toward a Stretching Surface
Stagnation Point Flow Galerkin’s Finite Difference Method Stretching Surface
2013/1/30
Steady two dimensional MHD stagnation point flow of a power law fluid over a stretching surface is investigated when the surface is stretched in its own plane with a velocity proportional to the dista...
Kramers' law: Validity, derivations and generalisations
Arrhenius’ law Kramers’ law metastability large deviations Wentzell Freidlin theory
2011/7/28
Abstract: Kramers' law describes the mean transition time of an overdamped Brownian particle between local minima in a potential landscape. We review different approaches that have been followed to ob...
