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- Helmholtz Institute JenaDE407 papers
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141 papers · 1 filter
First scattered-light images of the gas-rich debris disk around 49 Ceti
É. Choquet, J. Milli, Z. Wahhaj +31
We present the first scattered-light images of the debris disk around 49 ceti, a ~40 Myr A1 main sequence star at 59 pc, famous for hosting two massive dust belts as well as large…
QCD propagators and vertices from lattice QCD (in memory of Michael Müller-Preußker)
Andre Sternbeck
We review lattice calculations of the elementary Greens functions of QCD with a special emphasis on the Landau gauge. These lattice results have been of interest to continuum appro…
Nuclear excitation by two-photon electron transition
A. V. Volotka, A. Surzhykov, S. Trotsenko +3
A new mechanism of nuclear excitation via two-photon electron transitions (NETP) is proposed and studied theoretically. As a generic example, detailed calculations are performed fo…
The most powerful astrophysical events: Gravitational-wave peak luminosity of binary black holes as predicted by numerical relativity
David Keitel, Xisco Jiménez Forteza, Sascha Husa +9
For a brief moment, a binary black hole (BBH) merger can be the most powerful astrophysical event in the visible universe. Here we present a model fit for this gravitational-wave p…
Lee-Yang model from the functional renormalization group
Luca Zambelli, Omar Zanusso
We investigate the critical properties of the Lee-Yang model in less than six spacetime dimensions using truncations of the functional renormalization group flow. We give estimates…
An Addendum to the Heisenberg-Euler effective action beyond one loop
Holger Gies, Felix Karbstein
We study the effective interactions of external electromagnetic fields induced by fluctuations of virtual particles in the vacuum of quantum electrodynamics. Our main focus is on t…