Zobrazeno 1 - 10
of 16
pro vyhledávání: '"A. Sch�berl"'
Autor:
Danczul, Tobias, Sch��berl, Joachim
Publikováno v:
Numerische Mathematik. 151:369-404
We propose and analyze new numerical methods to evaluate fractional norms and apply fractional powers of elliptic operators. By means of a reduced basis method, we project to a small dimensional subspace where explicit diagonalization via the eigensy
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b002bdca18027d1bb4d5a3cfac36cfbe
https://doi.org/10.1007/s00211-022-01287-y
https://doi.org/10.1007/s00211-022-01287-y
Embedded-physics machine learning for coarse-graining and collective variable discovery without data
We present a novel learning framework that consistently embeds underlying physics while bypassing a significant drawback of most modern, data-driven coarse-grained approaches in the context of molecular dynamics (MD), i.e., the availability of big da
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5fffb1e3d012f1f303a677298ade0cc6
http://arxiv.org/abs/2002.10148
http://arxiv.org/abs/2002.10148
Autor:
Kapidani, Bernard, Sch��berl, Joachim
A Discontinuous Galerkin (DG) Finite Element Method (FEM) approach for the 3D time dependent Maxwell equations in unbounded domains is presented. The method (implemented in the FEM library NGsolve) is based on the covariant transformation of a modal
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bf69828ada79762aa958d9e86e1cf226
http://arxiv.org/abs/2002.08733
http://arxiv.org/abs/2002.08733
We present an equilibration-based a posteriori error estimator for N��d��lec element discretizations of the magnetostatic problem. The estimator is obtained by adding a gradient correction to the estimator for N��d��lec elements of ar
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7422ccefe2a6873d3c67a820bc9af9f4
Autor:
Kitzler, Gerhard, Sch��berl, Joachim
In this paper we present a numerical method for the Boltzmann equation. It is a spectral discretization in the velocity and a discontinuous Galerkin discretization in physical space. To obtain uniform approximation properties in the mach number, we s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::512fe159df6b43f07f01089eba404d88
http://arxiv.org/abs/1903.01904
http://arxiv.org/abs/1903.01904
This contribution is concerned with the motion planning for underactuated Euler-Bernoulli beams. The design of the feedforward control is based on a differential parametrization of the beam, where all system variables are expressed in terms of a free
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::32bb2467113c6da66bcc3e8c76374466
http://arxiv.org/abs/1810.13276
http://arxiv.org/abs/1810.13276
Autor:
Lucha, Wolfgang, Sch��berl, Franz F.
The spinless Salpeter equation can be regarded as the eigenvalue equation of a Hamiltonian that involves the relativistic kinetic energy and therefore is, in general, a nonlocal operator. Accordingly, it is hard to find solutions of this bound-state
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https://explore.openaire.eu/search/publication?articleId=doi_________::d4f5e0dd2a60a8d5a70711d302e85d05
Elementary introduction to the application of Mathematica 3.0 to the solution of bound-state problems in quantum theory by standard variational procedures, with particular emphasis on the computation of precise upper bounds on energy levels of the sy
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https://explore.openaire.eu/search/publication?articleId=doi_________::ac2fe990bd6e0ef826ee0013ebf4ae3a
Autor:
Lucha, Wolfgang, Sch��berl, Franz F.
The Hamiltonian of the spinless relativistic Coulomb problem combines the standard Coulomb interaction potential with the square-root operator of relativistic kinematics. This Hamiltonian is known to be bounded from below up to some well-defined crit
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https://explore.openaire.eu/search/publication?articleId=doi_dedup___::895249cd75b50af2b5ad64da7811d089
http://arxiv.org/abs/hep-ph/9607249
http://arxiv.org/abs/hep-ph/9607249
Autor:
Lucha, Wolfgang, Sch��berl, Franz F.
The aim of these lectures is to give a self-contained introduction to nonrelativistic potential models, to their formulation as well as to their possible applications. At the price of some lack of (in a mathematical sense) rigorous derivations, we tr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e965ca7884f8c2266c94058b58857a94
http://arxiv.org/abs/hep-ph/9601263
http://arxiv.org/abs/hep-ph/9601263