Results 271 to 280 of about 5,264,500 (305)

Scaling, asymptotic scaling and improved perturbation theory

Il Nuovo Cimento A, 1994
Contrary to recent claims, we show that lattice perturbation theory reproduces quite accurately Monte Carlo results of short-distance quantities. We argue that the present numerical situation strongly suggests the occurrence of a (zero temperature) deconfining transition in QCD at non-zero lattice coupling.
A. Patrascioiu, E. Seiler
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Onset of asymptotically free scaling

Physical Review D, 1982
We argue that the onset of asymptotically free scaling for the string tension in SU(2) lattice gauge theories need not be associated with the bulk transitions seen in the Monte Carlo specific-heat data. This is specifically realized in a class of constrained models where these two crossover phenomena are completely separated.
Richard C. Brower, David A. Kessler, Herbert Levine   +2 more
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Asymptotic Approximations and Extension of Time-Scales

SIAM Journal on Mathematical Analysis, 1980
It is shown how to obtain $O(\varepsilon )$ (or any higher order)-approximations to the solutions of the differential equation \[\begin{gathered} \dot \phi = 1 + \sum\limits_{p = 1}^p {\varepsilon ^p X^p (\phi ,X),\quad \phi \in S^1, } \hfill \\ \dot x = \sum_{p = 1}^p {\varepsilon ^p Y^p (\phi ,X),\quad \begin{array}{*{20}c} {\varepsilon \in (0 ...
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Exclusive photonuclear reactions and asymptotic scaling

Physical Review C, 1990
Recent measurements of electron-deuteron elastic scattering at high momentum transfer have placed an empirical lower limit on the momentum transfer for the onset of asymptotic scaling. The implications that this limit has for the {sup 2}H({gamma},{ital p}){ital n}, {sup 2}H({gamma},{ital d}){pi}{sup 0}, and {sup 3}He({gamma},{ital d})H reactions will ...
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Asymptotic scaling of a decaying turbulent compressible vortex

Physics of Fluids, 1999
In the present work a theoretical analysis of the asymptotic decay of an isolated, compressible turbulent vortex is presented. The governing equations are expanded in powers of the vortex Mach number squared, and the asymptotic scaling both of the O(1) and the O(M2) variables is theoretically analyzed in the framework of an isotropic eddy viscosity two-
GRASSO, Francesco, PIROZZOLI, Sergio
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Asymptotic behavior of the scaled mutation rate estimators

Biometrical Journal, 2010
AbstractImportant aspects of population evolution have been investigated using nucleotide sequences. Under the neutral Wright–Fisher model, the scaled mutation rate represents twice the average number of new mutations per generations and it is one of the key parameters in population genetics.
Pinheiro, Hildete P., Kiihl, Samara F., Pinheiro, Aluísio, dos Reis, Sérgio F.   +3 more
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Asymptotic Scaling for Euclidean Lattices

2013
We calculate numerically-exact values for the absorption time (or mean walk length) for a particle performing a nearest-neighbor random walk on a finite, nth generation triangular lattice of non-uniform connectivity with a deep trap at one vertex. We show that although the Euclidean lattice is not self-similar, there exists a scaling relation which ...
R. A. Garza-López, J. J. Kozak
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Scaling in the mean at asymptotic energies

Physical Review D, 1977
We investigate, in detail, the consequences of the assumption that ''scaling in the mean'' and Koba-Nielsen-Olesen (KNO) scaling remain valid at asymptotic energies for which p/sub L/ very-much-greater-than p/sub T/, m and very-much-greater-than 1. We argue that the scaling function phi (t) can be fit by the simple function e/sup -//sup t/ with no free
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Asymptotic fractals in the context of grey‐scale images

Journal of Microscopy, 1998
The estimation of the fractal dimension in the case of concave log–log Richardson–Mandelbrot plots can be obtained by using asymptotic fractal equations. We demonstrate here, under asymptotic fractal conditions, that additional derivations making use of the Minkowski dilation in grey‐scales lead to two asymptotes, one having a slope of 1 and the other ...
J P, Rigaut, D, Schoëvaërt-Brossault, A M, Downs, G, Landini   +3 more
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Composite asymptotic expansions and scaling wall turbulence

Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2007
In this article, the assumptions and reasoning that yield composite asymptotic expansions for wall turbulence are discussed. Particular attention is paid to the scaling quantities that are used to render the variables non-dimensional and of order one.
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