The adiabatic theorem of Quantum Mechanics disregards the soft photons of QED. Why, then, is it so successful? To understand the role of soft photons we prove an adiabatic theorem for the ground state of a simple model Hamiltonians that allows soft photons. We show that for weak electron-photon coupling, the adiabatic time scale is close to the time scale in a theory without the quantized radia...

The adiabatic theorem of Quantum Mechanics disregards the soft photons of QED. Why, then, is it so successful? To understand the role of soft photons we prove an adiabatic theorem for the ground state of a simple model Hamiltonians that allows soft photons. We show that for weak electron-photon coupling, the adiabatic time scale is close to the time scale in a theory without the quantized radia...

We study static non-axial octupole deformations in proton-rich Z = N nuclei, Ge, Se, Kr, Sr, Zr and Mo, by using the Skyrme Hartree-Fock plus BCS calculation with no restrictions on the nuclear shape. The calculation predicts that the oblate ground state in Se is extremely soft for the Y33 triangular deformation, and that in Zr the low-lying local minimum state coexisting with the prolate groun...

A semi-empirical impedance model based on a single parameter (effective flow resistivity) for the characteristic impedance of fibrous materials has proved remarkably successful for predicting outdoor ground effects. This model allows for the effects associated with the porosity of the ground. Surface roughness with scales much smaller than the incident wavelengths influences reflection from har...