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- Hiroshi Nakatsuji

Discipline name
D-index
D-index (Discipline H-index) only includes papers and citation values for an examined
discipline in contrast to General H-index which accounts for publications across all
disciplines.
Citations
Publications
World Ranking
National Ranking

Chemistry
D-index
71
Citations
15,750
432
World Ranking
3368
National Ranking
204

Physics
D-index
71
Citations
15,219
329
World Ranking
3024
National Ranking
110

- Quantum mechanics
- Electron
- Organic chemistry

Hiroshi Nakatsuji mainly focuses on Atomic physics, Excited state, Configuration interaction, Wave function and Quantum mechanics. His Atomic physics research incorporates themes from Symmetry, Ionization, Rydberg formula, Molecule and Electron. The study incorporates disciplines such as Chemical physics and Computational chemistry in addition to Molecule.

Hiroshi Nakatsuji combines subjects such as Photochemistry, Electronic correlation, Excitation and Ionization energy with his study of Excited state. His Configuration interaction study integrates concerns from other disciplines, such as Density matrix, Hartree–Fock method, Molecular orbital and Atomic orbital. His studies deal with areas such as Function, Cluster expansion, Electronic structure and Spin-½ as well as Wave function.

- Cluster expansion of the wavefunction. Electron correlations in ground and excited states by SAC (symmetry-adapted-cluster) and SAC CI theories (494 citations)
- Cluster expansion of the wavefunction. Calculation of electron correlations in ground and excited states by SAC and SAC CI theories (276 citations)
- Cluster expansion of the wavefunction, valence and rydberg excitations, ionizations, and inner-valence ionizations of CO2 and N2O studied by the sac and sac CI theories (232 citations)

His primary scientific interests are in Atomic physics, Excited state, Configuration interaction, Ab initio and Molecule. His study explores the link between Atomic physics and topics such as Electron that cross with problems in Wave function. Hiroshi Nakatsuji focuses mostly in the field of Wave function, narrowing it down to matters related to Classical mechanics and, in some cases, Schrödinger equation.

His study in Excited state is interdisciplinary in nature, drawing from both Photochemistry, Excitation, Cluster and Ground state. His research in Configuration interaction intersects with topics in Electronic correlation, Atomic orbital, Electronic structure, Ionization energy and Diatomic molecule. His Ab initio research is multidisciplinary, relying on both Ab initio quantum chemistry methods, Molecular physics, Computational chemistry, Molecular orbital and Chemical shift.

- Atomic physics (38.16%)
- Excited state (31.66%)
- Configuration interaction (22.01%)

- Excited state (31.66%)
- Atomic physics (38.16%)
- Schrödinger equation (8.60%)

His primary areas of investigation include Excited state, Atomic physics, Schrödinger equation, Spectral line and Configuration interaction. A large part of his Excited state studies is devoted to Singlet state. His Atomic physics research includes themes of Ab initio, Ionization, Rydberg formula and Excitation.

His Schrödinger equation research includes elements of Dirac equation, Wave function, Classical mechanics and Atoms in molecules. His Spectral line research incorporates elements of Electronic correlation, Molecule, Circular dichroism, Molecular physics and Ion. His research investigates the connection with Configuration interaction and areas like Cluster which intersect with concerns in Symmetry.

- Solving the Schrödinger equation for helium atom and its isoelectronic ions with the free iterative complement interaction "ICI… method (122 citations)
- Red light in chemiluminescence and yellow-green light in bioluminescence: color-tuning mechanism of firefly, Photinus pyralis, studied by the symmetry-adapted cluster-configuration interaction method. (116 citations)
- Theoretical Studies on the Color-Tuning Mechanism in Retinal Proteins (101 citations)

- Quantum mechanics
- Electron
- Organic chemistry

Hiroshi Nakatsuji focuses on Atomic physics, Excited state, Schrödinger equation, Configuration interaction and Excitation. His Atomic physics study integrates concerns from other disciplines, such as Spectral line, Symmetry, Molecular physics and Polarizable continuum model. Hiroshi Nakatsuji has researched Symmetry in several fields, including Molecule, Atomic orbital and Cluster.

He works in the field of Excited state, namely Singlet state. His Schrödinger equation study incorporates themes from Iterative method, Hamiltonian, Wave function and Ground state. The study incorporates disciplines such as Variational principle, Classical mechanics and Electron in addition to Wave function.

This overview was generated by a machine learning system which analysed the scientist’s body of work. If you have any feedback, you can contact us here.

Cluster expansion of the wavefunction. Electron correlations in ground and excited states by SAC (symmetry-adapted-cluster) and SAC CI theories

Hiroshi Nakatsuji.

Chemical Physics Letters **(1979)**

808 Citations

Cluster expansion of the wavefunction. Calculation of electron correlations in ground and excited states by SAC and SAC CI theories

Hiroshi Nakatsuji.

Chemical Physics Letters **(1979)**

451 Citations

Cluster expansion of the wavefunction, valence and rydberg excitations, ionizations, and inner-valence ionizations of CO2 and N2O studied by the sac and sac CI theories

Hiroshi Nakatsuji.

principles and practice of constraint programming **(1983)**

373 Citations

Direct Determination of the Quantum-Mechanical Density Matrix Using the Density Equation

Hiroshi Nakatsuji;Koji Yasuda.

Physical Review Letters **(1996)**

326 Citations

Equation for the direct determination of the density matrix

Hiroshi Nakatsuji.

Physical Review A **(1976)**

296 Citations

Variational calculations of fermion second-order reduced density matrices by semidefinite programming algorithm

Maho Nakata;Hiroshi Nakatsuji;Masahiro Ehara;Mitsuhiro Fukuda.

Journal of Chemical Physics **(2001)**

293 Citations

Description of two- and many-electron processes by the SAC-CI method

Hiroshi Nakatsuji.

Chemical Physics Letters **(1991)**

258 Citations

EXCITED AND IONIZED STATES OF FREE BASE PORPHIN STUDIED BY THE SYMMETRY ADAPTED CLUSTER-CONFIGURATION INTERACTION (SAC-CI) METHOD

Hiroshi Nakatsuji;Jun‐ya Hasegawa;Masahiko Hada.

Journal of Chemical Physics **(1996)**

211 Citations

Solving the Schrödinger equation for helium atom and its isoelectronic ions with the free iterative complement interaction "ICI… method

Hiroyuki Nakashima;Hiroshi Nakatsuji.

Journal of Chemical Physics **(2007)**

205 Citations

Red light in chemiluminescence and yellow-green light in bioluminescence: color-tuning mechanism of firefly, Photinus pyralis, studied by the symmetry-adapted cluster-configuration interaction method.

Naoki Nakatani;Jun-Ya Hasegawa;Hiroshi Nakatsuji.

Journal of the American Chemical Society **(2007)**

191 Citations

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