نتایج جستجو برای: limit calculation

تعداد نتایج: 287962  

1996
M. R. Ahmady

We examine the heavy-quark-induced Yukawa interaction between light quarks and a light Higgs field, which is facilitated in the chiral limit by the dynamical mass of light quarks anticipated from the chiral-noninvariance of the QCD vacuum. A low-energy estimate of the strong coupling near unity can be obtained from a comparison of the explicit perturbative calculation of the induced Yukawa inte...

1994
Matti Pitkänen

This paper belongs to the series devoted to the calculation of particle masses in the framework of p-adic conformal field theory limit of Topological GeometroDynamics. In paper II the general formulation of p-adic Higgs mechanism was given. In this paper the calculation of the fermionic and bosonic masses is carried out. The calculation of the masses necessitates the evaluation of degeneracies ...

2008
Craig McNeile

We calculate the BB parameter, relevant for B 0 –B0 mixing, from a lattice gauge theory simulation at β = 6.0. The bottom quarks are simulated in the static theory, the light quarks with Wilson fermions. Improved smearing functions produced by a variational technique, most, are used to reduce statistical errors and minimize excited-state contamination of the groundstate signal. We obtain BB(4.3...

2004
N. Tsutsui S. Aoki M. Fukugita S. Hashimoto K-I. Ishikawa N. Ishizuka Y. Iwasaki K. Kanaya T. Kaneko Y. Kuramashi M. Okawa T. Onogi Y. Taniguchi A. Ukawa T. Yoshié

High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan Institute of Physics, University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan Institute for Cosmic Ray Research, University of Tokyo, Kashiwa, Chiba 277-8582, Japan Department of Physics, Hiroshima University, Higashi-Hiroshima, Hiroshima 739-8526, Japan Center for Computational Physics, University of Tsukuba,...

Journal: :international journal of optimaization in civil engineering 0
p. hamidi t. akhlaghi m. hajialilou bonab

calculation of lateral earth pressure on retaining walls is one of the main issues in geotechnics. the upper and lower bound theorems of plasticity are used to analyze the stability of geotechnical structures include bearing capacity of foundations, lateral earth pressure on retaining walls and factor of safety of slopes. in this paper formulation of finite element limit analysis is introduced ...

Journal: :Physical review. E, Statistical, nonlinear, and soft matter physics 2006
Sebastian F Brandt Axel Pelster Ralf Wessel

We consider a model system of two coupled Hopfield neurons, which is described by delay differential equations taking into account the finite signal propagation and processing times. When the delay exceeds a critical value, a limit cycle emerges via a supercritical Hopf bifurcation. First, we calculate its frequency and trajectory perturbatively by applying the Poincaré-Lindstedt method. Then, ...

2018
Naoki Fukutake

Here we show what determines the optical resolution in laser microscopy. We define the expanded resolution limit (spatial frequency cutoff ) that includes the classic Abbe definition as 2 NA/λ, where λ is the wavelength. The resolution limit can approximate‐ ly be redefined as the frequency cutoff αNA/λ, where α is the constant that depends on the optical process occurring in the sample. In the...

1988
Steven MILLER Jonathan TENNYSON

Ab initio rotation-vibration calculations are presented for four H: potential energy surfaces with a view to determining a variational lower bound on the highest angular momentum state of H; and H,D’ supported by each potential. The calculations are performed using a two-step variational method and retain all ro-vibrational couplings. The results are found to be insensitive to the details of th...

Journal: :Optics express 2007
Arthur J Lowery Shunjie Wang Malin Premaratne

We develop a simple formula for estimating the effect of Four- Wave Mixing (FWM) on received signal quality in coherent optical systems using Orthogonal Frequency Division Multiplexing (OFDM) for dispersion compensation. This shows the nonlinear limit is substantially independent of the number of OFDM subcarriers. Our analysis agrees well with full split-step Fourier method simulations, so allo...

1999
Avinash Dhar

We present a calculation of the matrix theory 2-loop effective action for a D0brane in the background of the recently discussed D0-D6 bound state configuration. The effective DBI action of a D0-brane probe in the background of the corresponding 4-dimensional non-supersymmetric black hole solution to low-energy type IIA string theory compactified on a 6-torus is known to agree with the matrix th...

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