Strong Scalar QED in Inhomogeneous Electromagnetic Fields

Vacuum birefringence in strong inhomogeneous electromagnetic fields

QED in inhomogeneous magnetic fields.

A lower bound is placed on the fermionic determinant of Euclidean quantum electrodynamics in three dimensions in the presence of a smooth, finite–flux, static, unidirectional magnetic field B(r) = (0, 0, B(r)), where B(r) ≥ 0 or B(r) ≤ 0 and r is a point in the xy-plane. Bounds are also obtained for the induced spin for 2 + 1 dimensional QED in the presence of B(r). An upper bound is placed on ...

QED in strong fields

We discuss the status of atomic physics in strong field. We focus on the problem of electron-positron lines observed in heavy-ion collisions and on QED effects, calculated in strong Coulomb fields, especially Delbrück-scattering. We discuss the similarities and differences between these effects and channeling respectively beamstrahlung. We investigated the prospects for photon-channeling, calcu...

Propagating Particles through Inhomogeneous Scalar Fields

We present a numerical integration scheme for the propagation of particles/rays within continuous, inhomogeneous media, represented as discrete scalar fields. Our method aims at the calculation of energy distribution, where the initial energy is evenly distributed over a large number of particles, which are traced through the medium. While traversing the particles interact with the medium by me...

Casimir ‎effects‎‎ of nano objects in fluctuating scalar and electromagnetic fields: Thermodynamic investigating

 Casimir entropy is an important aspect of casimir effect and at the nanoscale is visible. In this paper, we employ the path integral method to ‎obtain a‎ ‎general‎ relation for casimir entropy and ‎i‎nternal energy of arbitrary shaped objects in the presence of two, three and four dimension scalar fields and ‎the‎ electromagnetic field. For this purpose, using Lagrangian and based on a perturb...