Search Results - subject:"Operator method"

Drastic violation of the U-matrix boundary condition by quantum-field theoretical on-shell renormalization and a new consistent renormalization concept involving bound-state problems

Seke, J. - In: Physica A: Statistical Mechanics and its Applications 312 (2002) 3, pp. 392-420

By generalizing the Gell-Mann–Low formula and applying the self-consistent projection-operator method, developed a … achieved in the present paper by elaborating a consistent renormalization procedure, based on the self-consistent projection-operator … method (which, unlike the standard perturbation method, guarantees the consistency of the applied approximation to any order …

Persistent link: https://www.econbiz.de/10010872085

The diffusion-drift equation on comb-like structure

El-Wakil, S.A.; Zahran, M.A.; Abulwafa, E.M. - In: Physica A: Statistical Mechanics and its Applications 303 (2002) 1, pp. 27-34

–Planck equation in the domain of fractal time evolution with critical exponent β(0<β⩽1). The operator method for the moments …

Persistent link: https://www.econbiz.de/10011060422