Relations between classical phase-space distributions and Wigner functions for multiparticle production processes. Abstract The effects of interpreting classical phase space distributions as Wigner functions, which is common in models of multiparticle production , are discussed. The temperature for the classical description is always higher than that for its Wigner function interpretation. A ro...

1. I n t r o d u c t i o n . In this paper we shall discuss operator splitting methods to discretize the linear Wigner equation and the coupled Wigner-Poisson system. The Wigner formalism, which represents a phase-space description of quantum mechanics, has in recent years a t t racted considerable at tent ion of solid s tate physicists for including quantum effects in the simulation of ul tra-...

In process of AC square wave submerged arc welding, electric signal waveform determines the arc energy characteristics in the time and frequency domain, which also reflects the arc stability of welding proc ess and quality indirectly. Using Wigner-Ville distribution (WVD), time frequency analysis is conducted to the current signal of AC square wave submerged arc welding. The Pseudo Wigner-Ville...