Zobrazeno 1 - 10
of 11
pro vyhledávání: '"Ramutis Kazys Kalinauskas"'
Publikováno v:
Computer Physics Communications. 236:26-33
In this work we present an independent scheme of the O(4) group transformation suitable for the calculation of orbital fractional parentage coefficients (OFPC) for N particle systems composed of N − 1 and 1 particle subsystems or N − 2 and 2 part
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f98a3ec55eca426dcb04506fb58ce582
https://doi.org/10.1016/j.cpc.2018.10.011
https://doi.org/10.1016/j.cpc.2018.10.011
Publikováno v:
Physics of Atomic Nuclei. 81:899-906
In this paper we present an independent scheme for constructing fractional parentage coefficients using symmetry group apparatus in translationally invariantmodel space, suitable for the six-particle system composed of three-particle bi-clusters, whe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b7c04df469a844d982d1d5a4d709509f
https://doi.org/10.1134/s106377881806025x
https://doi.org/10.1134/s106377881806025x
Publikováno v:
Computer Physics Communications. 265:108023
A procedure for precise calculation of the three- and four-particle harmonic-oscillator (HO) transformation brackets is presented. The analytical expressions of the four-particle HO transformation brackets are given. The computer code for the calcula
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e93c53d3898edaab26edb27f0366b462
https://doi.org/10.1016/j.cpc.2021.108023
https://doi.org/10.1016/j.cpc.2021.108023
Publikováno v:
Computer Physics Communications. 215:259-264
This is a new version of the HOTB code designed to calculate three and four particle harmonic oscillator (HO) transformation brackets and their matrices. The new version uses the OpenMP parallel communication standard for calculations of harmonic osc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6c9157e1923e42fbdac24162765df507
https://doi.org/10.1016/j.cpc.2017.01.028
https://doi.org/10.1016/j.cpc.2017.01.028
Publikováno v:
Computer Physics Communications. 184:409-413
In this article we present a new, considerably enhanced and more rapid method for calculation of the matrix of four-particle harmonic-oscillator transformation brackets (4HOB). The new method is an improved version of 4HOB matrix calculations which f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f221156f3812b0c50a10d2194e1c8256
https://doi.org/10.1016/j.cpc.2012.09.021
https://doi.org/10.1016/j.cpc.2012.09.021
Publikováno v:
Open Physics, Vol 10, Iss 2, Pp 421-428 (2012)
We present a new independent scheme of SO(3) group transformations suitable for the N particle system, composed of N − 1 and 1 particle subsystems, where N − 1 particles have their own intrinsic clusterization. The simple expressions for correspo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ee5cf15c27bd7f4b89703f9170847017
https://doaj.org/article/718aebaef9ef4e94a2a8d509c4f8d707
https://doaj.org/article/718aebaef9ef4e94a2a8d509c4f8d707
Publikováno v:
Computer Physics Communications. 182:1377-1381
We present a new version of the four-particle harmonic-oscillator transformation brackets (4HOB) calculation program, where marginal cases of mass-ratio parameters d = 0 , d → ∞ and d 1 = 0 , which cannot be calculated in previous version, are pr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c656416983f113dd21ddeda5c12eb26b
https://doi.org/10.1016/j.cpc.2011.01.031
https://doi.org/10.1016/j.cpc.2011.01.031
Publikováno v:
Computer Physics Communications. 185:3062-3064
This new version of the HOTB program for calculation of the three and four particle harmonic oscillator transformation brackets provides some enhancements and corrections to the earlier version (Germanas et al., 2010) [1]. In particular, new version
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::143071eb7e84795f1daeb296aa9984ff
https://doi.org/10.1016/j.cpc.2014.06.025
https://doi.org/10.1016/j.cpc.2014.06.025
Autor:
R. Žemaičinienė, G. P. Kamuntavicius, Ramutis Kazys Kalinauskas, S. Mickevičius, Darius Germanas
Publikováno v:
The European Physical Journal A. 25:379-385
By expanding the wave function in terms of the translationally invariant basis of harmonic oscillator functions, we calculate the converging upper (variational) bound for the energy. It is shown that one can construct lower bounds using the reduced d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::16881c7205ca5fa1e89a8bf57c3aa97f
https://doi.org/10.1140/epja/i2005-10135-x
https://doi.org/10.1140/epja/i2005-10135-x
Autor:
Rasa Žemaičiūnienė, Gintautas Pranciškus Kamuntavičius, Darius Germanas, Ramutis Kazys Kalinauskas
Publikováno v:
Lithuanian Journal of Physics. 44:243-248
New calculations of the energy spectrum of the many-body nuclear Hamiltonian, evading the diagonalization of its matrix in an extremely large harmonic oscillator basis, are presented. The efficiency of this method, which is based on factorization of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7ba694a27adf91d1fc496af6aa347305
https://doi.org/10.3952/lithjphys.44401
https://doi.org/10.3952/lithjphys.44401