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National Repository of Grey Literature 3 records found  Search took 0.01 seconds. 
Modeling atomic nuclei using supercomputers for precision tests of the Standard model
 Rojik, Matúš ; Dytrych, Tomáš (advisor) ; Knapp, František (referee)
One of the most important problems of modern theoretical nuclear physics is to accu- rately determine the structure of atomic nuclei. To obtain results that are in agreement with experimental data, one needs to solve the nuclear many-body problem with high enough precision. Ab initio methods address this problem by trying to solve the emergent Schrödinger equation for all nucleons with a realistic interaction. Until recently, they were applicable only to light nuclei because of the high computational demands. In this work, we briefly present the theory behind the symmetry-adapted no-core shell model, which allows for truncation of the model space based on innate symmetry of nuclei that leads to reduction of the Hamiltonian matrix dimensions, while the convergence of the full space is conserved. We explore its predictive power by studying beta decays of various nuclei and discuss possible applications of the symmetry-adapted no-core shell model for the study of physics beyond the Standard Model. 1
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Parallel computing on a Beowulf computer
 Trávníček, Pavel ; Paluch, Henryk ; Dytrych, Tomáš ; Souček, Jan
A parallel computing system based on commercial PCs running under LINUX OS is described, tested and its performence compared to the serial one.
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The computation of the nuclear symplectic model in a parallel cluster
 Bahri, C. ; Dytrych, Tomáš ; Rowe, D. J. ; Trávníček, Pavel ; Paluch, Henryk
Numerical modeling of collective behaviour of the atomic nucleus is described to show the possibilities of computing on a parallel PC cluster.
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