scholarly journals From first principles of QED to an application: hyperfine structure of P states of muonic hydrogenThis paper was presented at the International Conference on Precision Physics of Simple Atomic Systems, held at École de Physique, les Houches, France, 30 May – 4 June, 2010.

2011 ◽  
Vol 89 (1) ◽  
pp. 109-115 ◽  
Author(s):  
Ulrich D. Jentschura
Keyword(s):  
Hyperfine Structure ◽  
Quantum Electrodynamics ◽  
Energy Levels ◽  
Muonic Hydrogen ◽  
Intense Laser ◽  
Theoretical Treatment ◽  
Intense Laser Fields ◽  
Atomic Systems ◽  
Atomic Energy Levels ◽  
Interesting Area

The purpose of this article is twofold. First, we attempt to give a brief overview of the different application areas of quantum electrodynamics (QED). These include fundamental physics (prediction of atomic energy levels), where the atom may be exposed to additional external fields (hyperfine splitting and g factor). We also mention QED processes in highly intense laser fields and more applied areas like Casimir and Casimir–Polder interactions. Both the unifying aspects as well as the differences in the the theoretical treatment required by these application areas (such as the treatment of infinities) are highlighted. Second, we discuss an application of the formalism in the fundamentally interesting area of the prediction of energy levels, namely, the hyperfine structure of P states of muonic hydrogen.

scholarly journals Photon Fission in Intense Laser Fields and in the Coulomb Field of a Nucleus

1979 ◽  
Vol 32 (4) ◽  
pp. 295 ◽  
Author(s):  
JF Lindsey ◽  
HS Perlman ◽  
GJ Troup
Keyword(s):  
Cross Section ◽  
Quantum Electrodynamics ◽  
Vacuum Polarization ◽  
Transition Amplitude ◽  
Coulomb Field ◽  
Fission Cross Section ◽  
Developmental State ◽  
Intense Laser ◽  
Intense Laser Fields ◽  
Laser Technology

A calculation of the photon fission cross section in the Coulomb field of a nucleus reveals that the real part of the transition amplitude is the predominant contributor for photon energies up to 2 MeV. Since it is just this part that is associated with the fourth-order vacuum polarization process, it is suggested, given the present developmental state of laser technology, that coincidence experiments with photon fission might well afford a test of higher order quantum electrodynamics.

scholarly journals Toward high-precision values of the self energy of non-S states in hydrogen and hydrogen-like ions

2005 ◽  
Vol 83 (4) ◽  
pp. 447-454 ◽  
Author(s):  
E -O Le Bigot ◽  
U D Jentschura ◽  
P Indelicato ◽  
P J Mohr
Keyword(s):  
High Precision ◽  
Quantum Electrodynamics ◽  
Energy Levels ◽  
The Self ◽  
Level Shift ◽  
Atomic Systems ◽  
Self Energy ◽  
Rydberg Constant ◽  
Energy Level Shift ◽  
Nuclear Charge Number

The method and status of a study to provide numerical, high-precision values of the self-energy level shift in hydrogen and hydrogen-like ions is described. Graphs of the self energy in hydrogen-like ions with nuclear charge number between 20 and 110 are given for a large number of states. The self-energy is the largest contribution of quantum electrodynamics (QED) to the energy levels of these atomic systems. These results greatly expand the number of levels for which the self energy is known with a controlled and high precision. Applications include the adjustment of the Rydberg constant and atomic calculations that take into account QED effects.PACS Nos.: 12.20.Ds, 31.30.Jv, 06.20.Jr, 31.15.–p

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