We analyze fully implicit and linearly implicit backward difference formula (BDF) methods for quasilinear parabolic equations, without making any assumptions on the growth or decay of the coefficient functions. We combine maximal parabolic regularity and energy estimates to derive optimal-order error bounds for the time-discrete approximation to the solution and its gradient in the maximum norm...

We present results for two-loop QCD corrections to the short distance coefficient that governs leptonic decay of Bc-meson. After brief discussion of the technics of asymptotic threshold expansion used to perform this calculation, we give comments on the numerical value of twoloop corrections and its impact on NRQCD description of Bc-meson bound state dynamics.

We present results for two-loop QCD corrections to the short distance coefficient that governs leptonic decay of Bc-meson. After brief discussion of the technics of asymptotic expansion used to perform this calculation, we give comments on the numerical value of two-loop corrections and its impact on NRQCD description of Bc-meson bound state.

This declaration ponders the impacts of Joule warm, separation, and warming radiation for progression MHD Sutterby nanofluid past over an all-inclusive chamber. The wonder warmth mass conduction is demonstrated under warm conductivity relying upon temperature dispersion coefficients individually. Besides, conventional Fourier Fick laws have been applied in outflows transport. control model comp...

It has been proposed that partially quenched chiral perturbation theory can be used together with partially quenched lattice QCD to determine the low-energy constants of real QCD. We point out a complication of this approach and show how it can be resolved. Partial quenching changes the chiral symmetry group and introduces a new independent four-derivative operator. We explore the effects of th...

We present a lattice investigation of the heavy-light meson decay constants using Wilson light quarks and NRQCD heavy quarks, partially including the effects of dynamical sea quarks. We calculate the pseudoscalar and vector decay constants over a wide range in heavy quark mass and are able to perform a detailed analysis of heavy quark symmetry. We find consistency between the extrapolation of t...

A condition that guaranties the exponential decay of solutions initial-boundary value problem for damped wave equation is proved. method effective computability coefficient also presented.

Renormalization group (RG) methods are described for determining the key exponents related to the decay of solutions to nonlinear parabolic differential equations. Higher order (in the small coefficient of the nonlinearity) methods are developed. Exact solutions and theorems in some special cases confirm the RG results.

The beta-gamma directional correlation involving the first forbidden,2.52 Mev, <#-group in coincidence with the 1.465 Mev 72 S' transition, in the 14-hours decay of Ga, has been measured as a function of energy of the beta-particles . The correlation coefficient A^ was determined at five (Z energies ranging from 1.839 to 2.248 Mev as given below :

Both components of the transverse polarization of electrons (sigmaT1, sigmaT2) emitted in the beta-decay of polarized, free neutrons have been measured. The T-odd, P-odd correlation coefficient quantifying sigmaT2, perpendicular to the neutron polarization and electron momentum, was found to be R=0.008+/-0.015+/-0.005. This value is consistent with time reversal invariance and significantly imp...