The field of laser-matter interaction traditionally deals with the response of atoms, molecules,
and plasmas to an external light wave. However, the recent sustained technological …

Due to the interaction of physics and astrophysics we are witnessing in these years a
splendid synthesis of theoretical, experimental and observational results originating from …

The theoretical description of the nonlinear photoionization of atoms and ions exposed to
high-intensity laser radiation is underlain by the Keldysh theory proposed in 1964. The …

Recent advances in laser technology have pushed the frontier of maximum intensity
achieved to about 1022W/cm2 and investigators currently believe even higher intensities …

A method to generate ultrahigh intense electromagnetic fields is suggested, based on the
laser pulse compression, carrier frequency upshift, and focusing by a counterpropagating …

We review the progress in atomic structure theory with a focus on superheavy elements and
their predicted ground state configurations important for an element's placement in the …

The nonperturbative electron-positron pair production (Schwinger effect) is considered for
space-and time-dependent electric fields E→(x→, t). Based on the Dirac-Heisenberg-Wigner …

In a previous paper [GV Dunne and C. Schubert, Phys. Rev. D 72, 105004 (2005). PRVDAQ
0556-2821 10.1103/PhysRevD. 72.105004], it was shown that the worldline expression for …

In recent years, a large number of papers have appeared that dealt with e+ e-pair production
in heavy ion collisions at high energies. To a large extent these studies were motivated by …

Since the work of Sauter, and Heisenberg, Euler and K\" ockel, it has been understood that
vacuum polarization effects in quantum electrodynamics (QED) predict remarkable new …