Zobrazeno 1 - 10
of 340
pro vyhledávání: '"Robert Roth"'
Autor:
Marco Knöll, Robert Roth
Publikováno v:
Physics Letters B, Vol 846, Iss , Pp 138258- (2023)
Ab initio structure calculations for p-shell hypernuclei have recently become accessible through extensions of nuclear many-body methods, such as the no-core shell model, in combination with hyperon-nucleon interactions from chiral effective field th
Externí odkaz:
https://doaj.org/article/e6e0ebfb9ae34e16bd969b9831735317
Publikováno v:
Physics Letters B, Vol 839, Iss , Pp 137781- (2023)
The prediction of nuclear observables beyond the finite model spaces that are accessible through modern ab initio methods, such as the no-core shell model, poses a challenging task in nuclear structure theory. It requires reliable tools for the extra
Externí odkaz:
https://doaj.org/article/1b42ed6c721c411f9e94fb59aa9cc3fd
Publikováno v:
Physics Letters B, Vol 786, Iss , Pp 448-452 (2018)
We introduce a hybrid many-body approach that combines the flexibility of the No-Core Shell Model (NCSM) with the efficiency of Multi-Configurational Perturbation Theory (MCPT) to compute ground- and excited-state energies in arbitrary open-shell nuc
Externí odkaz:
https://doaj.org/article/ab68d6d4ede745309911613fb25fa91e
Publikováno v:
Physics Letters B, Vol 808, Iss , Pp 135651- (2020)
We present a family of nucleon-nucleon (NN) plus three-nucleon (3N) interactions up to N3LO in the chiral expansion that provides an accurate ab initio description of ground-state energies and charge radii up to the medium-mass regime with quantified
Externí odkaz:
https://doaj.org/article/8a0244b22962423780ac9b66677cc492
Publikováno v:
Frontiers in Physics, Vol 8 (2020)
In recent years many-body perturbation theory encountered a renaissance in the field of ab initio nuclear structure theory. In various applications it was shown that perturbation theory, including novel flavors of it, constitutes a useful tool to des
Externí odkaz:
https://doaj.org/article/9f8344b2ef42439a89cf40701a8e2675
Autor:
Roland Wirth, Robert Roth
Publikováno v:
Physics Letters B, Vol 779, Iss , Pp 336-341 (2018)
We explore the systematics of ground-state and excitation energies in singly-strange hypernuclei throughout the helium and lithium isotopic chains — from HeΛ5 to HeΛ11 and from LiΛ7 to LiΛ12 — in the ab initio no-core shell model with importa
Externí odkaz:
https://doaj.org/article/7c5040e3f784434bb1adade920b41071
Publikováno v:
Physics Letters B, Vol 756, Iss C, Pp 283-288 (2016)
We investigate the order-by-order convergence behavior of many-body perturbation theory (MBPT) as a simple and efficient tool to approximate the ground-state energy of closed-shell nuclei. To address the convergence properties directly, we explore pe
Externí odkaz:
https://doaj.org/article/549b91d39c5747308c8dd53ef1c653e4
Publikováno v:
Physics Letters B, Vol 736, Iss C, Pp 119-123 (2014)
We present the first ab initio calculations of nuclear ground states up into the domain of heavy nuclei, spanning the range from 16O to 132Sn, based on two- plus three-nucleon interactions derived within chiral effective field theory. We employ the s
Externí odkaz:
https://doaj.org/article/e8a5219533814caaa63b13c03b14a6dd
Autor:
Robert Roth, Martin Koch, Jakob Schaab, Martin Lilienblum, Frank Syrowatka, Tino Band, Thomas Thurn-Albrecht, Kathrin Dörr
Publikováno v:
New Journal of Physics, Vol 20, Iss 10, p 103044 (2018)
Ferroelectric polymers are promising as piezoelectric sensors and devices for data storage, energy harvesting and fast energy storage. However, efficient electric polarization as well as piezoelectric and dielectric responses of as-deposited films ar
Externí odkaz:
https://doaj.org/article/3009c671ed614796b9f44f1afbd73724
Autor:
Ola Fjellström, Sibel Akkaya, Hans-Georg Beisel, Per-Olof Eriksson, Karl Erixon, David Gustafsson, Ulrik Jurva, Daiwu Kang, David Karis, Wolfgang Knecht, Viveca Nerme, Ingemar Nilsson, Thomas Olsson, Alma Redzic, Robert Roth, Jenny Sandmark, Anna Tigerström, Linda Öster
Publikováno v:
PLoS ONE, Vol 10, Iss 1, p e0113705 (2015)
Activated factor XI (FXIa) inhibitors are anticipated to combine anticoagulant and profibrinolytic effects with a low bleeding risk. This motivated a structure aided fragment based lead generation campaign to create novel FXIa inhibitor leads. A virt
Externí odkaz:
https://doaj.org/article/1a2cc35337574e84979292e3f9e6ec05