Search Results - subject:"Self-energy"

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

the experimentally unobservable free-electron Dyson self-energy from the fermion propagator. By applying the new concept …, for the first time, consistently renormalized contributions (up to the fourth order) to the bound-electron self-energy …

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

Quantum corrections to the distribution function of particles over momentum in dense media

Starostin, A.N.; Mironov, A.B.; Aleksandrov, N.L.; … - In: Physica A: Statistical Mechanics and its Applications 305 (2002) 1, pp. 287-296

A simple derivation of the Galitskii–Yakimets distribution function over momentum is presented. For dense plasmas it contains the law ∼p−8 as a quantum correction to the classical Maxwellian distribution function at large momenta. The integral equation for the width of the spectral...

Persistent link: https://www.econbiz.de/10011057887