Zobrazeno 1 - 8
of 8
pro vyhledávání: '"Sebastian Steinbeisser"'
We extend the publicly available quantumfdtd code. It was originally intended for solving the time-independent three-dimensional Schr\"odinger equation via the finite-difference time-domain (FDTD) method and for extracting the ground, first, and seco
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9ecede11ba5bcae11eef4a7704636023
Autor:
Sebastian Steinbeisser, Nora Brambilla, Rafael L. Delgado, Andreas Kronfeld, Viljami Leino, Peter Petreczky, Antonio Vairo, Johannes Heinrich Weber
We report on the status of the analysis of the static energy in $2+1+1$-flavor QCD. The static energy is obtained by measuring Wilson line correlators in Coulomb gauge using the HISQ action, yielding the scales $r_{0}/a$, $r_{1}/a$, $r_{2}/a$, their
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7351d0573d70d8baa8bd756dca3be694
http://arxiv.org/abs/2111.02288
http://arxiv.org/abs/2111.02288
In order to solve the time-independent three-dimensional Schr\"odinger equation, one can transform the time-dependent Schr\"odinger equation to imaginary time and use a parallelized iterative method to obtain the full three-dimensional eigenstates an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bb3aa04b9b90b39167301bf39b66fee2
http://arxiv.org/abs/2006.16935
http://arxiv.org/abs/2006.16935
Publikováno v:
Proceedings of XIII Quark Confinement and the Hadron Spectrum — PoS(Confinement2018).
We study correlation functions of spatially separated static quark-antiquark pairs in $2+1$ flavor QCD in order to investigate the nature of color screening at high temperatures. We perform lattice calculations in a wide temperature range, $116~\text
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e401c2a896e5c1f55310e30e57ff2d11
https://doi.org/10.22323/1.336.0266
https://doi.org/10.22323/1.336.0266
Autor:
Jorge Segovia, Sebastian Steinbeisser
Publikováno v:
Proceedings of XVII International Conference on Hadron Spectroscopy and Structure — PoS(Hadron2017).
The electric dipole transitions $\chi_{bJ}(1P)\to \gamma\Upsilon(1S)$ with $J=0,1,2$ and $h_{b}(1P)\to \gamma\eta_{b}(1S)$ are computed using the weak-coupling version of a low-energy effective field theory named potential non-relativistic QCD (pNRQC
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::66d995e8f9caf6dd28e734790eb5b381
https://doi.org/10.22323/1.310.0097
https://doi.org/10.22323/1.310.0097
Determination of electric dipole transitions in heavy quarkonia using potential non-relativistic QCD
Autor:
Sebastian Steinbeißer, Jorge Segovia
The electric dipole transitions $\chi_{bJ}(1P)\to \gamma\Upsilon(1S)$ with $J=0,1,2$ and $h_{b}(1P)\to \gamma\eta_{b}(1S)$ are computed using the weak-coupling version of a low-energy effective field theory named potential non-relativistic QCD (pNRQC
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::eabd39c4e3c838d72882e0bbe4b76fd7
Autor:
Jorge Segovia, Sebastian Steinbeißer
Publikováno v:
EPJ Web of Conferences, Vol 137, p 06026 (2017)
This contribution contains the first numerical computation of the complete set of relativistic corrections of relative order $v^{2}$ for electric dipole (E1) transitions in heavy quarkonium; in particular, for the processes $\chi_{bJ}(1P) \to \Upsilo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::de03e64348b1081e1a27e95c2019ffe5
https://doaj.org/article/87e54094a43542dab20ad249660beedc
https://doaj.org/article/87e54094a43542dab20ad249660beedc
Autor:
Jorge Segovia, Sebastian Steinbeißer
Publikováno v:
Journal of Physics: Conference Series; 2018, Vol. 1024 Issue 1, p1-1, 1p