336 citations · 2.9k across the 62 of their papers we have counts for
6 papers · 1 filter
Parton showers and multijet events
R. Kuhn, A. Schaelicke, F. Krauss +1
A Monte-Carlo event-generator has been developed which is dedicated to simulate electron-positron annihilations. Especially a new approach for the combination of matrix elements an…
Higher-order binding corrections to the Lamb shift of 2P states
U. D. Jentschura, K. Pachucki
We present an improved calculation of higher-order corrections to the one-loop self energy of 2P states in hydrogen-like systems with small nuclear charge Z. The method is based on…
Lamb Shift of 3P and 4P states and the determination of
U. D. Jentschura, G. Soff, P. J. Mohr
The fine structure interval of P states in hydrogenlike systems can be determined theoretically with high precision, because the energy levels of P states are only slightly influen…
Evidence for the absence of regularization corrections to the partial-wave renormalization procedure in one-loop self energy calculations in external fields
I. Goidenko, G. Plunien, S. Zschocke +2
The equivalence of the covariant renormalization and the partial-wave renormaliz ation (PWR) approach is proven explicitly for the one-loop self-energy correction (SE) of a bound e…
APACIC++, A PArton Cascade In C++, version 1.0
R. Kuhn, F. Krauss, B. Ivanyi +1
APACIC++ is a Monte-Carlo event-generator dedicated for the simulation of electron-positron annihilations into jets. Within the framework of APACIC++, the emergence of jets is iden…
Nonuniqueness of the -vacuum
Ralf Schützhold, Ralf Kuhn, Michael Meyer-Hermann +2
We prove that the massless neutral -theory does not possess a unique vacuum. Based on the Wightman axioms the non-existence of a state which preserves Poincar{é} and scale in…