The quantum theories we want to understand are describing phenomena which take place in Euclidean space E. Among other things, such a theory is supposed to have an associated Hilbert space H, whose vectors represent the possible “states” of the system. You are perhaps already familiar with one simple example of a quantum theory, namely quantum Maxwell theory, which describes the dynamics of the...

The electric eld distribution inside heavily irradiated silicon particle detectors is deduced using observations of particle and MIP signals. In these detectors particle signals are observed for both p and n side illumination even when the detector is only partially depleted . The observations indicate that the electric eld distribution within the detector has the contribution expected from a u...

We propose an universal and precise method of electric field calculation in the case of an ellipsoidal bunch. The distribution function is fitted by the polynom of a certain degree and further calculations are made for this polynomial expansion. In the case of axisymmetric bunches the analytic solution is derived. Tests illustrate the high accuracy of this method. Contribution to the conference...

Electrical breakdown is one of the most important physical phenomena in electrical and electronic engineering. Since the early 20(th) century, many theories and models of electrical breakdown have been proposed, but the origin of one key issue, that the explanation for dc breakdown strength being twice or higher than ac breakdown strength in insulating materials, remains unclear. Here, by emplo...

The interior of the high-intensity Cs-sputter source used in routine operations at the Center for Accelerator Mass Spectrometry (CAMS) has been computer modeled using the program NEDLab, with the aim of improving negative ion output. Space charge effects on ion trajectories within the source were modeled through a successive iteration process involving the calculation of ion trajectories throug...

The financial crisis has exerted influences of different degrees within a global scope, and, in the meanwhile, has brought about definite risks to the electric charge management in electric network enterprises. This paper makes a comprehensive analysis of prominent risks and characteristic changes in electric charge management in electric network enterprises under influences of the financial cr...

We discuss whether electric charge conservation may not hold in four-dimensional world in models with infinite extra dimensions, i.e., whether escape of charged particles from our brane is consistent with effectively four-dimensional electrodynamics on the brane. We introduce a setup with photon localized on the brane and show that charge leakage into extra dimension is allowed within this setu...