Esper Dalgaard

1.4k total citations
20 papers, 1.1k citations indexed

About

Esper Dalgaard is a scholar working on Atomic and Molecular Physics, and Optics, Physical and Theoretical Chemistry and Electronic, Optical and Magnetic Materials. According to data from OpenAlex, Esper Dalgaard has authored 20 papers receiving a total of 1.1k indexed citations (citations by other indexed papers that have themselves been cited), including 16 papers in Atomic and Molecular Physics, and Optics, 5 papers in Physical and Theoretical Chemistry and 4 papers in Electronic, Optical and Magnetic Materials. Recurrent topics in Esper Dalgaard's work include Advanced Chemical Physics Studies (13 papers), Spectroscopy and Quantum Chemical Studies (9 papers) and Advanced Physical and Chemical Molecular Interactions (4 papers). Esper Dalgaard is often cited by papers focused on Advanced Chemical Physics Studies (13 papers), Spectroscopy and Quantum Chemical Studies (9 papers) and Advanced Physical and Chemical Molecular Interactions (4 papers). Esper Dalgaard collaborates with scholars based in Denmark and United States. Esper Dalgaard's co-authors include Hendrik J. Monkhorst, Poul Jo rgensen, Kurt V. Mikkelsen, Henrik Koch, Jan Linderberg, Jack Simons and Karl Anker Jørgensen and has published in prestigious journals such as The Journal of Chemical Physics, The Journal of Physical Chemistry and Chemical Physics Letters.

In The Last Decade

Esper Dalgaard

20 papers receiving 1.1k citations

Author Peers

Peers are selected by citation overlap in the author's most active subfields. citations · hero ref

Author Last Decade Papers Cites
Esper Dalgaard 944 274 257 129 127 20 1.1k
Poul J�rgensen 774 0.8× 212 0.8× 329 1.3× 70 0.5× 116 0.9× 10 913
Ian L. Cooper 780 0.8× 179 0.7× 208 0.8× 76 0.6× 79 0.6× 68 1.0k
E. A. McCullough 1.1k 1.2× 167 0.6× 336 1.3× 71 0.6× 115 0.9× 40 1.3k
Sten Rettrup 501 0.5× 156 0.6× 232 0.9× 139 1.1× 119 0.9× 45 782
Lap M. Cheung 1.3k 1.3× 190 0.7× 521 2.0× 128 1.0× 121 1.0× 32 1.6k
W. H. Henneker 875 0.9× 399 1.5× 278 1.1× 152 1.2× 64 0.5× 31 1.2k
Peter Lykos 690 0.7× 265 1.0× 203 0.8× 112 0.9× 188 1.5× 42 1.0k
Tai‐ichi Shibuya 846 0.9× 217 0.8× 219 0.9× 124 1.0× 59 0.5× 51 1.1k
Fukashi Sasaki 1.0k 1.1× 150 0.5× 242 0.9× 114 0.9× 117 0.9× 40 1.2k
S. Fraga 853 0.9× 162 0.6× 182 0.7× 123 1.0× 115 0.9× 42 1.2k

Countries citing papers authored by Esper Dalgaard

Since Specialization
Citations

This map shows the geographic impact of Esper Dalgaard's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Esper Dalgaard with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Esper Dalgaard more than expected).

Fields of papers citing papers by Esper Dalgaard

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Esper Dalgaard. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Esper Dalgaard. The network helps show where Esper Dalgaard may publish in the future.

Co-authorship network of co-authors of Esper Dalgaard

This figure shows the co-authorship network connecting the top 25 collaborators of Esper Dalgaard. A scholar is included among the top collaborators of Esper Dalgaard based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Esper Dalgaard. Esper Dalgaard is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Koch, Henrik & Esper Dalgaard. (1993). Linear superposition of optimized non-orthogonal Slater determinants for singlet states. Chemical Physics Letters. 212(1-2). 193–200. 15 indexed citations
2.
Koch, Henrik & Esper Dalgaard. (1992). A variational matrix decomposition applied to full configuration-interaction calculations. Chemical Physics Letters. 198(1-2). 51–58. 5 indexed citations
3.
Mikkelsen, Kurt V., et al.. (1987). Electron-transfer reactions in solution: an ab initio approach. The Journal of Physical Chemistry. 91(11). 3081–3092. 103 indexed citations
4.
Dalgaard, Esper, et al.. (1985). The energy weighted maximum overlap model for the electronic structure of molecules. The Journal of Chemical Physics. 82(7). 3214–3221. 2 indexed citations
5.
Jørgensen, Karl Anker & Esper Dalgaard. (1985). On the correlation between ionization potentials and carbon-13 chemical shifts in monosubstituted benzenes. Chemical Physics Letters. 114(2). 192–196. 3 indexed citations
6.
Dalgaard, Esper. (1983). On the pairing of the natural orbitals for projected broken symmetry states. Theoretical Chemistry Accounts. 64(3). 181–186. 2 indexed citations
7.
Dalgaard, Esper & Hendrik J. Monkhorst. (1983). Some aspects of the time-dependent coupled-cluster approach to dynamic response functions. Physical review. A, General physics. 28(3). 1217–1222. 338 indexed citations
8.
Dalgaard, Esper. (1982). Quadratic response functions within the time-dependent Hartree-Fock approximation. Physical review. A, General physics. 26(1). 42–52. 59 indexed citations
9.
Dalgaard, Esper. (1980). Variation principle for the time dependence of density operators and its relation to linear decoupling procedures for propagators. International Journal of Quantum Chemistry. 17(3). 449–458. 2 indexed citations
10.
Dalgaard, Esper. (1980). Time-dependent multiconfigurational Hartree–Fock theory. The Journal of Chemical Physics. 72(2). 816–823. 126 indexed citations
11.
Dalgaard, Esper. (1979). Expansion and completeness theorems for operator manifolds. International Journal of Quantum Chemistry. 15(2). 169–180. 65 indexed citations
12.
Dalgaard, Esper. (1979). A quadratically convergent reference state optimization procedure. Chemical Physics Letters. 65(3). 559–563. 80 indexed citations
13.
Dalgaard, Esper. (1978). The spin Hamiltonian for electron spin resonance of radicals in doublet states: calculations in the energy weighted maximum overlap model. Proceedings of the Royal Society of London A Mathematical and Physical Sciences. 361(1707). 487–512. 10 indexed citations
14.
Dalgaard, Esper & Poul Jo rgensen. (1978). Optimization of orbitals for multiconfigurational reference states. The Journal of Chemical Physics. 69(8). 3833–3844. 227 indexed citations
15.
Dalgaard, Esper. (1977). Polarization propagator approach to radiative lifetimes. Journal of Physics B Atomic and Molecular Physics. 10(2). 147–153. 2 indexed citations
16.
Dalgaard, Esper. (1977). Comments on the use of London's field dependent orbitals. Chemical Physics Letters. 47(2). 279–282. 17 indexed citations
17.
Dalgaard, Esper & Jack Simons. (1977). Equations-of-motion formulation of many-body perturbation theory. Journal of Physics B Atomic and Molecular Physics. 10(14). 2767–2779. 9 indexed citations
18.
Dalgaard, Esper. (1976). Canonical transformations and radiative effects in electron-electron interactions. Journal of Physics B Atomic and Molecular Physics. 9(15). 2573–2585. 7 indexed citations
19.
Dalgaard, Esper & Jan Linderberg. (1976). Calculations of g tensors for electron spin resonance in the energy weighted maximum overlap model. The Journal of Chemical Physics. 65(2). 692–696. 11 indexed citations
20.
Dalgaard, Esper. (1975). Analysis of the random phase approximation for atomic 'open-shell' systems. Journal of Physics B Atomic and Molecular Physics. 8(5). 695–717. 11 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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