Articles with "numerically exact" as a keyword



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Optimisation of excitation schemes for 14N overtone MAS NMR using numerically exact simulations.

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Published in 2017 at "Solid state nuclear magnetic resonance"

DOI: 10.1016/j.ssnmr.2016.12.006

Abstract: Numerically exact simulations of the 14N overtone (14NOT) MAS NMR experiment are used to investigate the effects of the applied magnetic field strength as well as three types of excitation pulse. The results show that… read more here.

Keywords: mas nmr; numerically exact; 14n overtone; exact simulations ... See more keywords
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Numerically exact generalized Green's function cluster expansions for electron-phonon problems

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Published in 2021 at "Physical Review B"

DOI: 10.1103/physrevb.104.035106

Abstract: We generalize the family of approximate momentum average methods to formulate a numerically exact, convergent hierarchy of equations whose solution provides an efficient algorithm to compute the Green’s function of a particle dressed by bosons… read more here.

Keywords: numerically exact; function cluster; generalized green; green function ... See more keywords
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Numerically exact mimicking of quantum gas microscopy for interacting lattice fermions

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Published in 2021 at "Physical Review B"

DOI: 10.1103/physrevb.104.075155

Abstract: A numerical method is presented for reproducing fermionic quantum gas microscope experiments in equilibrium. By employing nested componentwise direct sampling of fermion pseudo-density matrices, as they arise naturally in determinantal quantum Monte Carlo (QMC) simulations,… read more here.

Keywords: sign problem; numerically exact; microscopy; quantum gas ... See more keywords
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A numerically exact nonreflecting boundary condition applied to the acoustic Helmholtz equation

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Published in 2021 at "GEOPHYSICS"

DOI: 10.1190/geo2020-0682.1

Abstract: When modeling wave propagation, truncation of the computational domain to a manageable size requires nonreflecting boundaries. To construct such a boundary condition on one side of a rectangular domain for a finite-difference discretization of the… read more here.

Keywords: boundary condition; numerically exact; exact nonreflecting; condition ... See more keywords