Author

Okamoto, Ryoji

21 papers·260 citations in this corpus

	Paper	Category
Feb 1, 2019#21901.11106	Ground-state properties of doubly magic nuclei from the unitary-model-operator approach with the chiral two- and three-nucleon forces T. Miyagi · T. Abe · M. Kohno · P. Navratil · R. Okamoto · T. Otsuka · N. Shimizu · S. R. Stroberg	nucl-th	PRC	12
Aug 2, 2017#21708.00177	Introduction of the one-body correlation operator in the unitary-model-operator approach Takayuki Miyagi · Takashi Abe · Ryoji Okamoto · Takaharu Otsuka	nucl-th	PRC	4
Jun 14, 2017#11706.03846	Nucleon-deuteron scattering with the JISP16 potential R.Skibinski · J.Golak · K.Topolnicki · H.Witala · Yu.Volkotrub · H.Kamada · A.M.Shirokov · R.Okamoto · K.Suzuki · J.P.Vary	nucl-th	PRC	5
Apr 21, 2015#51504.04965	Ground-state energies and charge radii of $^{4}$ He, $^{16}$ O, $^{40}$ Ca, and $^{56}$ Ni in the unitary-model-operator approach Takayuki Miyagi · Takashi Abe · Ryoji Okamoto · Takaharu Otsuka	nucl-th	PTEP	3
Feb 13, 2014#1*1402.2723	Recursion Method for Deriving Energy-Independent Effective Interaction Kenji Suzuki · Hiroo Kumagai · Ryoji Okamoto · Masayuki Matsuzaki	nucl-th	PRC	5
Oct 19, 2012#4*1210.5028	Formulation of effective interaction in terms of renormalized vertices and propagators Kenji Suzuki🇯🇵 · Hiroo Kumagai🇯🇵 · Masayuki Matsuzaki🇯🇵 · Ryoji Okamoto🇯🇵	nucl-th	PRC	10
Jun 27, 2012#4*1206.5892	$^{4}$ He energies and radii by the coupled-cluster method with many-body average potential M. Kohno🇯🇵 · R. Okamoto🇯🇵	nucl-th	—	0
Dec 29, 2010#4*1012.5712	Graphical Method for Effective Interaction with a New Vertex Function K. Suzuki (Kyushu Inst. of Tech.)🇯🇵 · R. Okamoto (Kyushu Inst. of Tech.)🇯🇵 · H. Kumagai (Fukuoka Inst. of Tech.)🇯🇵 · S. Fujii (CNS, Univ. of Tokyo)🇯🇵	nucl-th	PRC	23
Nov 10, 2010#2*1011.1994	A new solution for effective interaction R. Okamoto🇯🇵 · K. Suzuki🇯🇵 · H. Kumagai🇯🇵 · S. Fujii🇯🇵	nucl-th	J.Phys.Conf.Ser.	6
Aug 25, 2009#3*0908.3376	Ground-state and single-particle energies of nuclei around ^{16}O, ^{40}Ca, and ^{56}Ni from realistic nucleon-nucleon forces S. Fujii🇯🇵 · R. Okamoto🇯🇵 · K. Suzuki🇯🇵	nucl-th	PRL	30
Nov 8, 2007#6*0711.1058	Equivalent hyperon-nucleon interactions in low-momentum space M. Kohno🇯🇵 · R. Okamoto🇯🇵 · H. Kamada🇯🇵 · Y. Fujiwara🇯🇵	nucl-th	PRC	3
Oct 25, 2005#2*nucl-th/0510073	Separability of a Low-Momentum Effective Nucleon-Nucleon Potential H. Kamada (Kyushu Ins. Tech.)🇯🇵 · S. Fujii (CNS, Tokyo U.)🇯🇵 · E. Uzu (Tokyo U. of Science)🇯🇵 · M. Yamaguchi (RCNP)🇯🇵 · R. Okamoto (Kyushu Ins. Tech.)🇯🇵 · Y. Koike (Hosei U.)🇯🇵	nucl-th	Prog.Theor.Phys.	6
Feb 1, 2005#6*nucl-th/0501081	Formal Relation among Various Hermitian and non-Hermitian Effective Interactions R.Okamoto🇯🇵 · S. Fujii🇯🇵 · K. Suzuki🇯🇵	nucl-th	IJMPE	4
Jul 1, 2004#2*nucl-th/0406082	Dependence of Nuclear Binding Energies on the Cutoff Momentum of Low-Momentum Nucleon-Nucleon Interaction S. Fujii (1)🇯🇵 · H. Kamada (2)🇯🇵 · R. Okamoto (2)🇯🇵 · K. Suzuki (2) ((1) Univ. of Tokyo, (2) Kyushu Inst. of Tech.)🇯🇵	nucl-th	—	2
Apr 20, 2004#3*nucl-th/0404049	Low-momentum nucleon-nucleon interaction and its application to the few-nucleon systems S. Fujii (Univ. of Tokyo)🇯🇵 · E. Epelbaum (Jefferson Laboratory)🇺🇸 · H. Kamada (Kyushu Ins. of Tech.)🇯🇵 · R. Okamoto (Kyushu Ins. of Tech.)🇯🇵 · K. Suzuki (Kyushu Ins. of Tech.)🇯🇵 · W. Gloeckle (Ruhr-U. Bochum)🇩🇪	nucl-th	PRC	36
Nov 18, 2003#1*nucl-th/0311053	Charge-dependent calculations of single-particle energies in nuclei around ^{16}O with modern nucleon-nucleon interactions S. Fujii (1)🇯🇵 · R. Okamoto (2)🇯🇵 · K. Suzuki (2) ((1) University of Tokyo, (2) Kyushu Inst. of Tech.)🇯🇵	nucl-th	PRC	45
Jun 6, 2002#1*nucl-th/0206012	Shell-Model Calculations for_{\Lambda}^{16}O and_{\Lambda}^{17}O Using Microscopic Effective Interactions with \Sigma Degrees of Freedom S. Fujii🇯🇵 · R. Okamoto🇯🇵 · K. Suzuki🇯🇵	nucl-th	—	0
Jul 14, 1999#2*nucl-th/9907050	Exact Treatment of the Pauli Exclusion Operator in Nuclear Matter Calculation K. Suzuki🇯🇵 · R. Okamoto🇯🇵 · M. Kohno🇯🇵 · S. Nagata🇯🇵	nucl-th	NPA	40
Jan 21, 1999#1*nucl-th/9901055	Unitary-model-operator approach to $Λ$ hypernuclei S. Fujii🇯🇵 · R. Okamoto🇯🇵 · K. Suzuki🇯🇵	nucl-th	NPA	5
Sep 9, 1993#2*nucl-th/9309006	Approximate Treatment of Hermitian Effective Interactions and a Bound on the Error R.Okamoto🇯🇵 · K.Suzuki🇯🇵 · P.J.Ellis🇺🇸 · Jifa Hao🇺🇸 · Zibang Li🇺🇸 · T.T.S.Kuo🇺🇸	nucl-th	Prog.Theor.Phys.	0
Jun 24, 1993#1*nucl-th/9306022	Iterative Solution for Effective Interactions in a System with Non-degenerate Unperturbed Energies K. Suzuki🇯🇵 · R. Okamoto🇯🇵 · P.J. Ellis🇺🇸 · T.T.S. Kuo🇺🇸	nucl-th	NPA	21

Ground-state properties of doubly magic nuclei from the unitary-model-operator approach with the chiral two- and three-nucleon forces
T. Miyagi · T. Abe · M. Kohno · P. Navratil · R. Okamoto · T. Otsuka · N. Shimizu · S. R. Stroberg
Feb 1, 2019#2nucl-thPRC12 citations
Introduction of the one-body correlation operator in the unitary-model-operator approach
Takayuki Miyagi · Takashi Abe · Ryoji Okamoto · Takaharu Otsuka
Aug 2, 2017#2nucl-thPRC4 citations
Nucleon-deuteron scattering with the JISP16 potential
R.Skibinski · J.Golak · K.Topolnicki · H.Witala · Yu.Volkotrub · H.Kamada · A.M.Shirokov · R.Okamoto · K.Suzuki · J.P.Vary
Jun 14, 2017#1nucl-thPRC5 citations
Ground-state energies and charge radii of $^{4}$ He, $^{16}$ O, $^{40}$ Ca, and $^{56}$ Ni in the unitary-model-operator approach
Takayuki Miyagi · Takashi Abe · Ryoji Okamoto · Takaharu Otsuka
Apr 21, 2015#5nucl-thPTEP3 citations
Recursion Method for Deriving Energy-Independent Effective Interaction
Kenji Suzuki · Hiroo Kumagai · Ryoji Okamoto · Masayuki Matsuzaki
Feb 13, 2014#1*nucl-thPRC5 citations
Formulation of effective interaction in terms of renormalized vertices and propagators
Kenji Suzuki🇯🇵 · Hiroo Kumagai🇯🇵 · Masayuki Matsuzaki🇯🇵 · Ryoji Okamoto🇯🇵
Oct 19, 2012#4*nucl-thPRC10 citations
$^{4}$ He energies and radii by the coupled-cluster method with many-body average potential
M. Kohno🇯🇵 · R. Okamoto🇯🇵
Jun 27, 2012#4*nucl-th0 citations
Graphical Method for Effective Interaction with a New Vertex Function
K. Suzuki (Kyushu Inst. of Tech.)🇯🇵 · R. Okamoto (Kyushu Inst. of Tech.)🇯🇵 · H. Kumagai (Fukuoka Inst. of Tech.)🇯🇵 · S. Fujii (CNS, Univ. of Tokyo)🇯🇵
Dec 29, 2010#4*nucl-thPRC23 citations
A new solution for effective interaction
R. Okamoto🇯🇵 · K. Suzuki🇯🇵 · H. Kumagai🇯🇵 · S. Fujii🇯🇵
Nov 10, 2010#2*nucl-thJ.Phys.Conf.Ser.6 citations
Ground-state and single-particle energies of nuclei around ^{16}O, ^{40}Ca, and ^{56}Ni from realistic nucleon-nucleon forces
S. Fujii🇯🇵 · R. Okamoto🇯🇵 · K. Suzuki🇯🇵
Aug 25, 2009#3*nucl-thPRL30 citations
Equivalent hyperon-nucleon interactions in low-momentum space
M. Kohno🇯🇵 · R. Okamoto🇯🇵 · H. Kamada🇯🇵 · Y. Fujiwara🇯🇵
Nov 8, 2007#6*nucl-thPRC3 citations
Separability of a Low-Momentum Effective Nucleon-Nucleon Potential
H. Kamada (Kyushu Ins. Tech.)🇯🇵 · S. Fujii (CNS, Tokyo U.)🇯🇵 · E. Uzu (Tokyo U. of Science)🇯🇵 · M. Yamaguchi (RCNP)🇯🇵 · R. Okamoto (Kyushu Ins. Tech.)🇯🇵 · Y. Koike (Hosei U.)🇯🇵
Oct 25, 2005#2*nucl-thProg.Theor.Phys.6 citations
Formal Relation among Various Hermitian and non-Hermitian Effective Interactions
R.Okamoto🇯🇵 · S. Fujii🇯🇵 · K. Suzuki🇯🇵
Feb 1, 2005#6*nucl-thIJMPE4 citations
Dependence of Nuclear Binding Energies on the Cutoff Momentum of Low-Momentum Nucleon-Nucleon Interaction
S. Fujii (1)🇯🇵 · H. Kamada (2)🇯🇵 · R. Okamoto (2)🇯🇵 · K. Suzuki (2) ((1) Univ. of Tokyo, (2) Kyushu Inst. of Tech.)🇯🇵
Jul 1, 2004#2*nucl-th2 citations
Low-momentum nucleon-nucleon interaction and its application to the few-nucleon systems
S. Fujii (Univ. of Tokyo)🇯🇵 · E. Epelbaum (Jefferson Laboratory)🇺🇸 · H. Kamada (Kyushu Ins. of Tech.)🇯🇵 · R. Okamoto (Kyushu Ins. of Tech.)🇯🇵 · K. Suzuki (Kyushu Ins. of Tech.)🇯🇵 · W. Gloeckle (Ruhr-U. Bochum)🇩🇪
Apr 20, 2004#3*nucl-thPRC36 citations
Charge-dependent calculations of single-particle energies in nuclei around ^{16}O with modern nucleon-nucleon interactions
S. Fujii (1)🇯🇵 · R. Okamoto (2)🇯🇵 · K. Suzuki (2) ((1) University of Tokyo, (2) Kyushu Inst. of Tech.)🇯🇵
Nov 18, 2003#1*nucl-thPRC45 citations
Shell-Model Calculations for_{\Lambda}^{16}O and_{\Lambda}^{17}O Using Microscopic Effective Interactions with \Sigma Degrees of Freedom
S. Fujii🇯🇵 · R. Okamoto🇯🇵 · K. Suzuki🇯🇵
Jun 6, 2002#1*nucl-th0 citations
Exact Treatment of the Pauli Exclusion Operator in Nuclear Matter Calculation
K. Suzuki🇯🇵 · R. Okamoto🇯🇵 · M. Kohno🇯🇵 · S. Nagata🇯🇵
Jul 14, 1999#2*nucl-thNPA40 citations
Unitary-model-operator approach to $Λ$ hypernuclei
S. Fujii🇯🇵 · R. Okamoto🇯🇵 · K. Suzuki🇯🇵
Jan 21, 1999#1*nucl-thNPA5 citations
Approximate Treatment of Hermitian Effective Interactions and a Bound on the Error
R.Okamoto🇯🇵 · K.Suzuki🇯🇵 · P.J.Ellis🇺🇸 · Jifa Hao🇺🇸 · Zibang Li🇺🇸 · T.T.S.Kuo🇺🇸
Sep 9, 1993#2*nucl-thProg.Theor.Phys.0 citations
Iterative Solution for Effective Interactions in a System with Non-degenerate Unperturbed Energies
K. Suzuki🇯🇵 · R. Okamoto🇯🇵 · P.J. Ellis🇺🇸 · T.T.S. Kuo🇺🇸
Jun 24, 1993#1*nucl-thNPA21 citations

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