Vacuum instability in slowly varying electric fields of the Dirac equation; they have a form of simple
functionals of a given
slowly varying electric field. We
Vacuum instability in time-dependent electric fields: New example of an exactly solvable case in the regime of
slowly changing field with corresponding results obtained within the
slowly varying field
Cosmologies from Nonlinear Multidimensional Gravity with Acceleration and Slowly Varying G, b(tau), grow exponentially at large times, but b(t) grows
slowly enough to admit variations
Simulation of light propagation in the thin-film waveguide lens wavelengths is almost constant. Assuming in this case that the electromagnetic field also
varies slowly Fast driven quantum systems: Interaction picture and boundary conditions is then derived for the averaged (
slowly varying) wave
functions. In this work, we obtain this effective equation