DC pole | Wartość | Język |
dc.contributor.author | Grining, Tomasz | - |
dc.contributor.author | Tomza, Michał | - |
dc.contributor.author | Lesiuk, Michał | - |
dc.contributor.author | Przybytek, Michał | - |
dc.contributor.author | Musiał, Monika | - |
dc.contributor.author | Massignan, Pietro | - |
dc.contributor.author | Lewenstein, Maciej | - |
dc.contributor.author | Moszynski, Robert | - |
dc.date.accessioned | 2018-02-01T12:08:48Z | - |
dc.date.available | 2018-02-01T12:08:48Z | - |
dc.date.issued | 2015 | - |
dc.identifier.citation | New Journal of Physics, 2015, iss. 11, art. no 115001 | pl_PL |
dc.identifier.issn | 1367-2630 | - |
dc.identifier.uri | http://hdl.handle.net/20.500.12128/643 | - |
dc.description.abstract | Weemploy ab initio methods of quantum chemistry to investigate spin-1/2 fermions interacting via a
two-body contact potential in a one-dimensional harmonic trap. The convergence of the total energy
with the size of the one-particle basis set is analytically investigated for the two-body problem and the
same form of the convergence formula is numerically confirmed to be valid for the many-body case.
Benchmark calculations for two to six fermions with the full configuration interaction method
equivalent to the exact diagonalization approach, and the coupled cluster (CC) method including
single, double, triple, and quadruple excitations are presented. The convergence of the correlation
energy with the level of excitations included in theCCmodel is analyzed. The range of the interaction
strength for which single-reference CCmethods work is examined. Next, theCCmethod restricted to
single, double, and noniterative triple excitations, CCSD(T), is employed to study a two-component
Fermi gas composed of 6–80 atoms in a one-dimensional harmonic trap. The density profiles of
trapped atomic clouds are also reported. Finally, a comparison with experimental results for fewfermion
systems is presented. Upcoming possible applications and extensions of the presented
approach are discussed. | pl_PL |
dc.language.iso | en | pl_PL |
dc.rights | Uznanie autorstwa 3.0 Polska | * |
dc.rights.uri | http://creativecommons.org/licenses/by/3.0/pl/ | * |
dc.subject | Trapped fermions | pl_PL |
dc.subject | Quantum gases in one-dimension | pl_PL |
dc.subject | Coupled cluster method | pl_PL |
dc.title | Many interacting fermions in a one-dimensional harmonic trap : a quantum-chemical treatment | pl_PL |
dc.type | info:eu-repo/semantics/article | pl_PL |
dc.relation.journal | New Journal of Physics | pl_PL |
dc.identifier.doi | 10.1088/1367-2630/17/11/115001 | - |
Pojawia się w kolekcji: | Artykuły (WNŚiT)
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