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- GSI Helmholtz Centre for Heavy Ion ResearchDE210 papers
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50 papers · 1 filter
A Polynomial Time Version of LLL With Deep Insertions
Felix Fontein, Michael Schneider, Urs Wagner
Lattice reduction algorithms have numerous applications in number theory, algebra, as well as in cryptanalysis. The most famous algorithm for lattice reduction is the LLL algorithm…
Polytopes associated to Dihedral Groups
Barbara Baumeister, Christian Haase, Benjamin Nill +1
In this note we investigate the convex hull of those -permutation matrices that correspond to symmetries of a regular -gon. We give the complete facet description. A…
In-Medium Similarity Renormalization Group with Chiral Two- Plus Three-Nucleon Interactions
H. Hergert, S. K. Bogner, S. Binder +4
We use the recently proposed In-Medium Similarity Renormalization Group (IM-SRG) to carry out a systematic study of closed-shell nuclei up to $\nuc{Ni}{56}$, based on chiral two- p…
On the analytic structure of scalar glueball operators at Born level
Andreas Windisch, Markus Q. Huber, Reinhard Alkofer
We study the analytic structure of the two-point function of the operator F2 which is expected to describe a scalar glueball. The calculation of the involved integrals is complicat…
First Direct Double-Beta Decay Q-value Measurement of 82Se in Support of Understanding the Nature of the Neutrino
David L. Lincoln, Jason D. Holt, Georg Bollen +7
In anticipation of results from current and future double-beta decay studies, we report a measurement resulting in a 82Se double-beta decay Q-value of 2997.9(3) keV, an order of ma…
Toward the Ab-initio Description of Medium Mass Nuclei
C. Barbieri, A. Cipollone, V. Soma +2
As ab-initio calculations of atomic nuclei enter the A=40-100 mass range, a great challenge is how to approach the vast majority of open-shell (degenerate) isotopes. We add realist…