432 citations · 5.7k across the 212 of their papers we have counts for
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Attempts at a determination of the fine-structure constant from first principles: A brief historical overview
U. D. Jentschura, I. Nandori
It has been a notably elusive task to find a remotely sensical ansatz for a calculation of Sommerfeld's electrodynamic fine-structure constant alpha_QED ~ 1/137.036 based on first…
One-Loop Dominance in the Imaginary Part of the Polarizability: Application to Blackbody and Non-Contact van der Waals Friction
U. D. Jentschura, G. Lach, M. De Kieviet +1
Phenomenologically important quantum dissipative processes include black-body friction (an atom absorbs counterpropagating blue-shifted photons and spontaneously emits them in all…
Muonic bound systems, virtual particles and proton radius
U. D. Jentschura
The proton radius puzzle questions the self-consistency of theory and experiment in light muonic and electronic bound systems. Here, we summarize the current status of virtual part…
Dirac Equations with Confining Potentials
J. H. Noble, U. D. Jentschura
This paper is devoted to a study of relativistic eigenstates of Dirac particles which are simultaneously bound by a static Coulomb potential and added linear confining potentials.…
Theoretical study of the Compton effect with correlated three-photon emission: From the differential cross section to high-energy triple-photon entanglement
E. Lötstedt, U. D. Jentschura
The three-photon Compton effect is studied. An incoming photon undergoes triple scattering off a free electron, which leads to the emission of three entangled photons. We investiga…
Fine-Structure Constant for Gravitational and Scalar Interactions
U. D. Jentschura
Starting from the coupling of a relativistic quantum particle to the curved Schwarzschild space-time, we show that the Dirac--Schwarzschild problem has bound states and calculate t…