432 citations · 5.7k across the 212 of their papers we have counts for
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Temperature-Dependent Dielectric Function of Calcium Fluoride
T. Das, D. Alam, C. A. Ullrich +1
The optical properties of calcium fluoride (fluorspar, CaF2) are mainly determined by a strongly temperature-dependent giant infrared (IR) peak, and a series of nearly temperature-…
Short-Range Hard-Sphere Potential and Coulomb Interaction: Deser-Trueman Formula for Rydberg States of Exotic Atomic Systems
G. S. Adkins, U. D. Jentschura
In exotic atomic systems with hadronic constituent particles, it is notoriously difficult to estimate the strong-interaction correction to energy levels. It is well known that, due…
Radiative Energy and Mass Shifts of Quantum Cyclotron States
Ulrich D. Jentschura
We discuss relativistic and radiative corrections to the energies of quantum cyclotron states. In particular, it is shown analytically that the leading logarithmic radiative (self-…
Reply to Comment on "Revisiting the divergent multipole expansion of atom-surface interactions: Hydrogen and positronium, alpha-quartz, and physisorption" (arXiv:2501.14803)
Ulrich D. Jentschura
We present a Reply to the Comment by G. L. Klimchitskaya, arXiv:2501.14803 [physics.atom-ph]. It is shown that the criticism formulated in the Comment fails to appreciate recently…
Coupled Oscillators and Dielectric Function
T. Das, C. A. Ullrich, U. D. Jentschura
A generalized Sellmeier model, also referred to as the Lorentz-Dirac model, has been used for the description of the dielectric function of a number of technologically important ma…