Per-Olov Löwdin (28 Ocak 1916 - 6 Ocak 2000) İsveçli fizikçi, Uppsala Üniversitesi'nde profesör (1960'tan 1983'e kadar), paralel olarak 1993'e kadar Florida Üniversitesi'nde profesör.
Ivar Waller adı altındaki eski lisans öğrencisi, Löwdin 1950 yılında moleküler orbital hesaplamalar için simetrik ortogonalizasyon düzenlemeleri yapmıştır. Bu şema Yarı-ampirik teorileri kullanılan sıfır diferansiyel örtüşme (ZDO) yaklaşım temelidir. Löwdin ayrıca kolay kuantum mekaniğinin çeşitli teoremlerin türetmelerini matrisleri için sembolleri kullanarak oluşturmuştur.
ROHF,UHF ve RES-GVB teorilerinde kullanılan meşhur “Löwdin’s pairing theorem” onun değildir. Kendisine göre George G. Hall ve King Löwdin 'in resmi olmayan önerisinden sonra resmi bir sunum yapmışlardır.
1963 ve 1971 yılları arasında yayınlanmış pertürbasyon teorisi üzerindeki 14 sayfa dizi kuantum kimyası için en iyi bölümleme tekniği olarak görülmüştür.
Löwdin ayrıca 1958 yılında Uppsala'da kuantum kimyası yaz okulundan başlayarak çok etkili ve aktif bir öğretmendir. 1958 ve 1960'ta Uppsala Üniversitesi kuantum kimyası grubuna kardeş olarak Florida Üniversitesi'nde kuantum teorisi projesine başlamıştır. Uluslararası Kış Enstitüleri (başlarda Sanibel adasında olan daha sonra Gainesville alınan) yüzlerce Latin Amerikanların seksenler ve doksanlar boyunca katılımlarını sağladı. 1960 yılında Kış Enstitüsünün içindeki birleşimde Sanibel sempozyumunu kurdu. 1960'tan sonra her yıl düzenlenmiştir.
Löwdin 1969'da İsveç Kraliyet Bilimler Akademisi üyesi olarak seçilmiş ve 1972'den 1984'e kadar Fizik Nobel Ödülü komitesinde bulunmuştur. Kuantum kimyası uluslararası gazetesi ve kuantum kimyası gelişmeler serisi kurucudur. Uluslararası Kuantum Moleküler Bilimler Akademisi'nin de vakıf üyesidir.
- "Lorentz-Transformationen och den Kinematiska Relativitetsprincipen". Elementa. Cilt 22. 1939. ss. 161–169.
- "A quantum mechanical calculation of the cohesive energy, the interionic distance, and the elastic constants of some crystals". Arkiv Mat. Astr. Fysik. Cilt 35A. 1947. ss. 1–10.
- "A quantum mechanical calculation of the cohesive energy, the interionic distance, and the elastic constants of some ionic crystals. II. The elastic constants c12 and c44". Arkiv Mat. Astr. Fysik. Cilt 30. 1948. ss. 1–18.
- Löwdin, Per-Olov (1950). "On the non-orthogonality problem connected with the use of atomic wave functions in the theory of molecules and crystals". The Journal of Chemical Physics. 18 (3). s. 365. Bibcode:1950JChPh..18..365L. doi:10.1063/1.1747632. Bibcode: 1950JChPh..18..365L
- "On the calculation of certain integrals occurring in the theory of molecules, especially three-center and four-center integrals". Arkiv Fysik. Cilt 3. 1951. ss. 147–154.
- "A note on the numerical calculation of asymptotic phases with a numeric study of Hulthen's variational principle". Arkiv Fysik. Cilt 3. 1951. ss. 155–166.
- Löwdin, Per-Olov (1951). "Calculation of Electric Dipole Moments of some Heterocyclics". The Journal of Chemical Physics. 19 (10). s. 1323. Bibcode:1951JChPh..19.1323L. doi:10.1063/1.1748043. Bibcode: 1951JChPh..19.1323L
- Löwdin, Per-Olov (1951). "A note on the quantum-mechanical perturbation theory". The Journal of Chemical Physics. 19 (11). s. 1396. Bibcode:1951JChPh..19.1396L. doi:10.1063/1.1748067. Bibcode: 1951JChPh..19.1396L
- Löwdin, Per-Olov (1951). "On the quantum-mechanical calculation of the cohesive energy of molecules and crystals. Part I. A general energy formula for the ground state". The Journal of Chemical Physics. 19 (12). s. 1570. Bibcode:1951JChPh..19.1570L. doi:10.1063/1.1748125. Bibcode: 1951JChPh..19.1570L
- Löwdin, Per-Olov (1951). "On the quantum-mechanical calculation of the cohesive energy of molecules and crystals. Part II. Treatment of the alkali metals with numerical applications to sodium". The Journal of Chemical Physics. 19 (12). s. 1579. Bibcode:1951JChPh..19.1579L. doi:10.1063/1.1748126. Bibcode: 1951JChPh..19.1579L
- Löwdin, Per-Olov (1953). "Studies of atomic self-consistent Fields. I. Calculation of Slater functions". Physical Review. 90 (1). ss. 120–125. Bibcode:1953PhRv...90..120L. doi:10.1103/PhysRev.90.120. Bibcode: 1953PhRv...90..120L
- Löwdin, Per-Olov (1953). "Approximate formulas for many-center integrals in the theory of molecules and crystals". The Journal of Chemical Physics. 21 (2). s. 374. Bibcode:1953JChPh..21..374L. doi:10.1063/1.1698901. Bibcode: 1953JChPh..21..374L
- Löwdin, Per-Olov (1953). "On the molecular-orbital theory of conjugated organic compounds with application to the perturbed benzene ring". The Journal of Chemical Physics. 21 (3). s. 496. Bibcode:1953JChPh..21..496L. doi:10.1063/1.1698934. Bibcode: 1953JChPh..21..496L
- Löwdin, Per-Olov (1954). "Studies of atomic self-consistent fields. II. Interpolation problems". Physical Review. 94 (6). ss. 1600–1609. Bibcode:1954PhRv...94.1600L. doi:10.1103/PhysRev.94.1600. Bibcode: 1954PhRv...94.1600L
- Löwdin, Per-Olov (1955). "Quantum theory of many-particle systems. I. Physical interpretations by means of density matrices, natural spin-orbitals, and convergence problems in the method of configurational interaction". Physical Review. 97 (6). ss. 1474–1489. Bibcode:1955PhRv...97.1474L. doi:10.1103/PhysRev.97.1474. Bibcode: 1955PhRv...97.1474L
- Löwdin, Per-Olov (1955). "Quantum theory of many-particle systems. II. Study of ordinary Hartree-Fock approximation". Physical Review. 97 (6). ss. 1490–1508. Bibcode:1955PhRv...97.1490L. doi:10.1103/PhysRev.97.1490. Bibcode: 1955PhRv...97.1490L
- Löwdin, Per-Olov (1955). "Quantum theory of many-particle systems. III. Extension of the Hartree-Fock scheme to include degenerate systems and correlation effects". Physical Review. 97 (6). ss. 1509–1520. Bibcode:1955PhRv...97.1509L. doi:10.1103/PhysRev.97.1509. Bibcode: 1955PhRv...97.1509L
- Löwdin, Per-Olov (1955). "The historical development of the electron correlation problem". International Journal of Quantum Chemistry. 55 (2). ss. 77–102. doi:10.1002/qua.560550203. Bibcode: 1955IJQC...55...77L
- Shull, Harrison; Löwdin, Per-Olov (1955). "Natural spin orbitals for helium". The Journal of Chemical Physics. 23 (8). s. 1565. Bibcode:1955JChPh..23.1565S. doi:10.1063/1.1742383. Bibcode: 1955JChPh..23.1565S
- Löwdin, Per-Olov (1956). "Quantum theory of cohesive properties of solids". Advances in Physics. 5 (17). s. 1. Bibcode:1956AdPhy...5....1L. doi:10.1080/00018735600101155. Bibcode: 1956AdPhy...5....1L
- Löwdin, Per-Olov; Shull, Harrison (1956). "Natural orbitals in the quantum theory of two-electron systems". Physical Review. 101 (6). ss. 1730–1739. Bibcode:1956PhRv..101.1730L. doi:10.1103/PhysRev.101.1730. Bibcode: 1956PhRv..101.1730L
- Löwdin, Per-Olov; Appel, Klaus (1956). "Studies of atomic self-consistent fields. Analytics wave functions for the argon-like ions and for the first row of the transition metals". Physical Review. 103 (6). ss. 1746–1755. Bibcode:1956PhRv..103.1746L. doi:10.1103/PhysRev.103.1746. Bibcode: 1956PhRv..103.1746L
- Shull, Harrison; Löwdin, Per-Olov (1956). "Correlation splitting in helium-like ions". The Journal of Chemical Physics. 25 (5). s. 1035. Bibcode:1956JChPh..25.1035S. doi:10.1063/1.1743093. Bibcode: 1956JChPh..25.1035S
- Löwdin, Per-Olov (1957). "Present situation in Quantum Chemistry". The Journal of Physical Chemistry. 61 (1). ss. 55–68. doi:10.1021/j150547a012. Bibcode: 1957JPhCh..61...55L
- Löwdin, Per-Olov (1958). "Spin Degeneracy Problem". Colloq. Intern. Centre Natl. Recherche Sci. (Paris). Cilt 82. s. 23.
- Shull, Harrison; Löwdin, Per-Olov (1958). "Variation theorem for excited states". Physical Review. 110 (6). ss. 1466–1467. Bibcode:1958PhRv..110.1466S. doi:10.1103/PhysRev.110.1466. Bibcode: 1958PhRv..110.1466S
- Löwdin, Per-Olov; Rèdei, Lajos (1959). "Combined use of the methods of superposition of configurations and correlation factor on the ground states of helium-like ions". Physical Review. 114 (3). ss. 752–757. Bibcode:1959PhRv..114..752L. doi:10.1103/PhysRev.114.752. Bibcode: 1959PhRv..114..752L
- Löwdin, Per-Olov (1959). "Scaling problem, virial theorem, and connected relations in quantum mechanics". Journal of Molecular Spectroscopy. 3 (1–6). ss. 46–66. Bibcode:1959JMoSp...3...46L. doi:10.1016/0022-2852(59)90006-2. Bibcode: 1959JMoSp...3...46L
- Shull, Harrison; Löwdin, Per-Olov (1959). "Superposition of configurations and natural spin orbitals. Applications to the He problem". The Journal of Chemical Physics. 30 (3). s. 617. Bibcode:1959JChPh..30..617S. doi:10.1063/1.1730019. Bibcode: 1959JChPh..30..617S
- Löwdin, Per-Olov (1960). "Quantum Theory of electronic structure of molecules". Ann. Rev. Phys. Chem. 11 (1). ss. 107–132. Bibcode:1960ARPC...11..107L. doi:10.1146/annurev.pc.11.100160.000543. Bibcode: 1960ARPC...11..107L
- Löwdin, Per-Olov (1960). "Expansion theorems for the total wave function and extended Hartree-Fock Schemes". Reviews of Modern Physics. 32 (2). ss. 328–334. Bibcode:1960RvMP...32..328L. doi:10.1103/RevModPhys.32.328. Bibcode: 1960RvMP...32..328L
- Löwdin, Per-Olov (1961). "Note on the separability theorem for electron pairs". The Journal of Chemical Physics. 35 (1). s. 78. Bibcode:1961JChPh..35...78L. doi:10.1063/1.1731935. Bibcode: 1961JChPh..35...78L
- Löwdin, Per-Olov (1962). "Studies in perturbation theory. IV. Solution of eigenvalue problem by projection operator formalism". Journal Mathematical Physics. 3 (5). s. 969. Bibcode:1962JMP.....3..969L. doi:10.1063/1.1724312. Bibcode: 1962JMP.....3..969L
- Löwdin, Per-Olov (1962). "Studies in perturbation theory. V. Some aspects on the exact self-consistent field theory". Journal Mathematical Physics. 3 (6). s. 1171. Bibcode:1962JMP.....3.1171L. doi:10.1063/1.1703860. Bibcode: 1962JMP.....3.1171L
- Löwdin, Per-Olov (1962). "Band theory, valence bond, and tight-binding calculations". Journal of Applied Physics. 33 (1). s. 251. Bibcode:1962JAP....33..251L. doi:10.1063/1.1777106. Bibcode: 1962JAP....33..251L
- Löwdin, Per-Olov (1962). "Exchange, corrleation, and spin effects in molecular and solid-state theory". Reviews of Modern Physics. 34 (1). ss. 80–87. Bibcode:1962RvMP...34...80L. doi:10.1103/RevModPhys.34.80. Bibcode: 1962RvMP...34...80L
- Löwdin, Per-Olov (1962). "The normal constants of motion in quantum mechanics treated by projection technique". Reviews of Modern Physics. 34 (3). ss. 520–530. Bibcode:1962RvMP...34..520L. doi:10.1103/RevModPhys.34.520. Bibcode: 1962RvMP...34..520L
- Calais, Jean-Louis; Löwdin, Per-Olov (1962). "A simple method of treating atomic integrals containing functions of r12". Journal of Molecular Spectroscopy. 8 (1–6). ss. 203–211. Bibcode:1962JMoSp...8..203C. doi:10.1016/0022-2852(62)90021-8. Bibcode: 1962JMoSp...8..203C
- Löwdin, Per-Olov (1963). "Wave and reaction operators in the quantum theory of many-article systems". Reviews of Modern Physics. 35 (3). ss. 702–707. Bibcode:1963RvMP...35..702L. doi:10.1103/RevModPhys.35.702. Bibcode: 1963RvMP...35..702L
- Löwdin, Per-Olov (1963). "Proton tunneling in DNA and its biological implications". Reviews of Modern Physics. 35 (3). ss. 724–732. Bibcode:1963RvMP...35..724L. doi:10.1103/RevModPhys.35.724. Bibcode: 1963RvMP...35..724L
- Löwdin, Per-Olov (1963). "Studies in perturbation theor: Part I. An elementary iteration-variation procedure for solving the Schrödinger equation by partitioning technique". Journal of Molecular Spectroscopy. 10 (1–6). ss. 12–33. Bibcode:1963JMoSp..10...12L. doi:10.1016/0022-2852(63)90151-6. Bibcode: 1963JMoSp..10...12L
- Löwdin, Per-Olov (1964). "Angular momentum wavefunctions constructed by projector operators". Reviews of Modern Physics. 36 (4). ss. 966–976. Bibcode:1964RvMP...36..966L. doi:10.1103/RevModPhys.36.966. Bibcode: 1964RvMP...36..966L
- Löwdin, Per-Olov (1964). "Studies in perturbation theory: Part VI. Contraction of secular equations". Journal of Molecular Spectroscopy. 14 (1–4). ss. 112–118. Bibcode:1964JMoSp..14..112L. doi:10.1016/0022-2852(64)90106-7. Bibcode: 1964JMoSp..14..112L
- Löwdin, Per-Olov (1964). "Studies in perturbation theory: Part VII. Localized perturbation". Journal of Molecular Spectroscopy. 14 (1–4). ss. 199–130. Bibcode:1964JMoSp..14..119L. doi:10.1016/0022-2852(64)90107-9. Bibcode: 1964JMoSp..14..199L
- Löwdin, Per-Olov (1964). "Studies in perturbation theory: Part VIII. Separation of Dirac equation and study of the spin-orbit coupling and Fermi contact terms". Journal of Molecular Spectroscopy. 14 (1–4). ss. 131–144. Bibcode:1964JMoSp..14..131L. doi:10.1016/0022-2852(64)90108-0. Bibcode: 1964JMoSp..14..131L
- Löwdin, Per-Olov (1965). "Studies in perturbation theory. IX. connection between various approaches in the recent development - evaluation of upper bounds to energy eigenvalues in Schrödinger's perturbation theory". Journal of Mathematical Physics. 6 (8). s. 1341. Bibcode:1965JMP.....6.1341L. doi:10.1063/1.1704781. Bibcode: 1965JMP.....6.1341L
- Löwdin, Per-Olov (1965). "Studies in perturbation theory. X. Lower bounds to energy eigenvalues in perturbation-theory ground state". Physical Review. 139 (2A). ss. A357–A372. Bibcode:1965PhRv..139..357L. doi:10.1103/PhysRev.139.A357. Bibcode: 1965PhRv..139..357L
- Löwdin, Per-Olov (1965). "Studies in perturbation theory. XI. Lower bounds to energy eigenvalues, ground state, and excited states". The Journal of Chemical Physics. 43 (10). ss. S175–S185. Bibcode:1965JChPh..43..175L. doi:10.1063/1.1701483. Bibcode: 1965JChPh..43..175L
- Löwdin, Per-Olov (1966). "Quantum genetics and the aperiodic solid: Some aspects on the biological problems of heredity, mutations, aging and tumors in view of the quantum theory of the DNA molecule". Advances in Quantum Chemistry. Advances in Quantum Chemistry. Cilt 2. ss. 213–360. Bibcode:1966AdQC....2..213L. doi:10.1016/S0065-3276(08)60076-3. ISBN 978-0-12-034802-2. Bibcode: 1966AdQC....2..213L
- Löwdin, Per-Olov (1967). "Group algebra, convolution algebra, and applications to quantum mechanics". Reviews of Modern Physics. 39 (2). ss. 259–187. Bibcode:1967RvMP...39..259L. doi:10.1103/RevModPhys.39.259. Bibcode: 1967RvMP...39..259L
- Löwdin, Per-Olov (1967). "Quantum theory of time-dependent phenomena treated by the evolution operator technique". Advances in Quantum Chemistry. Advances in Quantum Chemistry. Cilt 3. ss. 323–381. Bibcode:1967AdQC....3..323L. doi:10.1016/S0065-3276(08)60092-1. ISBN 978-0-12-034803-9. Bibcode: 1967AdQC....3..323L
- Löwdin, Per-Olov (1968). "Studies in perturbation theory XIII. Treatment of constants of motion in resolvent method, partitioning technique, and perturbation theory". International Journal of Quantum Chemistry. 2 (6). ss. 867–931. Bibcode:1968IJQC....2..867L. doi:10.1002/qua.560020612.
- Löwdin, Per-Olov (1968). "Some comments on the treatment of symmetry properties in perturbation theory". International Journal of Quantum Chemistry. 2 (S2). ss. 137–150. Bibcode:1968IJQC....2..137L. doi:10.1002/qua.560020715.
- MacIntyre, Walter M.; Löwdin, Per-Olov (1968). "Electronic energy of the DNA replication plane". International Journal of Quantum Chemistry. 2 (S2). ss. 207–217. Bibcode:1968IJQC....2..207M. doi:10.1002/qua.560020720.
- Berrondo, Manuel; Löwdin, Per-Olov (1969). "The projection operator for a space spanned by a linearly dependent set". International Journal of Quantum Chemistry. 3 (6). ss. 767–780. Bibcode:1969IJQC....3..767B. doi:10.1002/qua.560030604.
- Löwdin, Per-Olov (1969). "Some comments on the periodic system of elements". International Journal of Quantum Chemistry. 3 (S3A). ss. 331–334. Bibcode:1969IJQC....3..331L. doi:10.1002/qua.560030737.
- Löwdin, Per-Olov (1969). "some aspects of the hydrogen bond in molecular biology". Annals of the New York Academy of Sciences. Cilt 158. ss. 86–95. Bibcode:1969NYASA.158...86L. doi:10.1111/j.1749-6632.1969.tb56215.x. Bibcode: 1969NYASA.158...86L
- Löwdin, Per-Olov (1970). "On the nonorthogonality problem". Advances in Quantum Chemistry. Advances in Quantum Chemistry. Cilt 5. ss. 185–199. Bibcode:1970AdQC....5..185L. doi:10.1016/S0065-3276(08)60339-1. ISBN 978-0-12-034805-3. Bibcode: 1970AdQC....5..185L
- Gruninger, John; Öhrn, Yngve; Löwdin, Per-Olov (1970). "Comments on the analysis of atomic correlation energies". The Journal of Chemical Physics. 52 (11). s. 5551. Bibcode:1970JChPh..52.5551G. doi:10.1063/1.1672824. Bibcode: 1970JChPh..52.5551G
- Löwdin, Per-Olov; Goscinski, Osvaldo (1970). "The exchange phenomenon, the symmetric group, and the spin degeneracy problem". International Journal of quantum Chemistry. 4 (S38). ss. 533–591. doi:10.1002/qua.560040719.
- Löwdin, Per-Olov (1971). "Some properties of inner projections". International Journal of quantum Chemistry. 5 (S4). ss. 231–237. doi:10.1002/qua.560050725.
- Laskowski, Bernard; Löwdin, Per-Olov (1972). "Treatment of constants of motion in the variation principle. Symmetry properties of variational wavefunctions". Chemical Physics Letters. 16 (1). ss. 1–4. Bibcode:1972CPL....16....1L. doi:10.1016/0009-2614(72)80441-X. Bibcode: 1972CPL....16....1L
- Löwdin, Per-Olov; Mukherjee, P. K. (1972). "Some comments on the time-dependent variation principle". Chemical Physics Letters. 14 (1). ss. 1–7. Bibcode:1972CPL....14....1L. doi:10.1016/0009-2614(72)87127-6. Bibcode: 1972CPL....14....1L
- Ahlenius, T.; Calais, J.-L.; Löwdin, Per-Olov (1973). "Some comments on the construction of an orthonornal set of LCAO basis functions for crystals". Journal of Physics C: Solid State Physics. 6 (11). s. 1896. Bibcode:1973JPhC....6.1896A. doi:10.1088/0022-3719/6/11/016.
- Laskowski, B.; van Leuven, P.; Löwdin, Per-Olov; Lowdin, P -O (1973). "Electron gas test for the alternant molecular orbital method". Journal of Physics C: Solid State Physics. 6 (18). s. 2777. Bibcode:1973JPhC....6.2777L. doi:10.1088/0022-3719/6/18/007.
- Löwdin, Per-Olov (1980). "Molecular structure calculations". Advances in Quantum Chemistry. Advances in Quantum Chemistry (İngilizce). Cilt 12. ss. 263–316. Bibcode:1980AdQC...12..263L. doi:10.1016/S0065-3276(08)60318-4. ISBN 978-0-12-034812-1.
- Löwdin, Per-Olov (1980). "Introductory remarks to Nobel Symposium on many-body theory of atomic systems". Physica Scripta. 21 (3–4). s. 229. Bibcode:1980PhyS...21..229L. doi:10.1088/0031-8949/21/3-4/002.
- Taurian, Oscar E.; Löwdin, Per-Olov (1981). "Some remarks on the projector associated with the intersection of two linear manifolds". Acta physica Academiae Scientiarum Hungaricae. 51 (1–2). ss. 5–12. doi:10.1007/BF03155558.
- Löwdin, Per-Olov (1982). "Partitioning technique, perturbation theory, and rational approximations". International Journal of Quantum Chemistry. 21 (1). ss. 69–92. doi:10.1002/qua.560210105.
- Löwdin, Per-Olov (1982). "On operators, superoperators, hamiltonians, and liouvillians". International Journal of Quantum Chemistry. 22 (S16). ss. 485–560. doi:10.1002/qua.560220847.
- Froelich, Piotr; Löwdin, Per-Olov (1983). "On the Hartree-Fock scheme for a pair of adjoint operators". Journal of Mathematical Physics. 24 (1). s. 88. Bibcode:1983JMP....24...88F. doi:10.1063/1.525605. Bibcode: 1983JMP....24...88L
- Löwdin, Per-Olov (1983). "On the stability problem of a pair of adjoint operators". Journal of Mathematical Physics. 25 (1). s. 70. Bibcode:1983JMP....24...70L. doi:10.1063/1.525604. Bibcode: 1983JMP....25...70L
- Löwdin, Per-Olov (1983). "On the Sanibel coefficients in the expansion of spin-projected Slater determinants". International Journal of Quantum Chemistry. 24 (1). ss. 729–745. doi:10.1002/qua.560240615. Bibcode: 1983IJQC...24..729L
- Löwdin, Per-Olov (1984). "Some aspects on the relation between the natural sciences and the human mind: An introduction to a panel discussion on the origin of life and mind". International Journal of Quantum Chemistry. 26 (S11). ss. 31–43. doi:10.1002/qua.560260705.
- Löwdin, Per-Olov (1985). "On the connection between the resolvent methods and partitioning technique, rational approximation, and perturbation theory". Physica Scripta. 32 (4). s. 261. Bibcode:1985PhyS...32..261L. doi:10.1088/0031-8949/32/4/002.
- Löwdin, Per-Olov (1985). "Some aspects on the Hamiltonian and Liouvillian formalism, the special propagator methods, and the equation of motion approach". Advances in Quantum Chemistry. Advances in Quantum Chemistry. Cilt 17. ss. 285–334. Bibcode:1985AdQC...17..285L. doi:10.1016/S0065-3276(08)60305-6. ISBN 978-0-12-034817-6. Bibcode: 1985AdQC...17..285L
- Löwdin, Per-Olov (1986). "Some comments on the method of complex scaling to find physical resonance states". International Journal of Quantum Chemistry. 30 (S20). ss. 743–748. doi:10.1002/qua.560300763.
- Shik Kong, Young Shik; Jhon, Mu Shik; Löwdin, Per-Olov (1987). "Studies on proton transfers in water clusters and DNA base pairs". International Journal of Quantum Chemistry. 32 (S14). ss. 189–209. doi:10.1002/qua.560320820.
- Löwdin, Per-Olov (1992). "On linear algebra, the least squares method and the search for linear relations by regression analysis in quantum chemistry and other sciences". Advances in Quantum Chemistry. Advances in Quantum Chemistry (İngilizce). Cilt 23. s. 83. Bibcode:1992AdQC...23...83L. doi:10.1016/S0065-3276(08)60029-5. ISBN 978-0-12-034823-7. Bibcode: 1992AdQC...23...83L
- Löwdin, Per-Olov; Mayer, István (1992). "Some studies of the general Hartree-Fock method". Advances in Quantum Chemistry. Advances in Quantum Chemistry (İngilizce). Cilt 24. ss. 79–114. Bibcode:1992AdQC...24...79L. doi:10.1016/S0065-3276(08)60101-X. ISBN 978-0-12-034824-4. Bibcode: 1992AdQC...24...79L
- Löwdin, Per-Olov (1992). "Some aspects of objectivity and reality in modern science". Foundations of Physics. 22 (1). ss. 41–105. Bibcode:1992FoPh...22...41L. doi:10.1007/BF01883380. Bibcode: 1992FoPh...22...41L
- Mayer, István; Löwdin, Per-Olov (1993). "Some comments of the general Hartree-Fock method". Chemical Physics Letters. 202 (1–2). ss. 1–6. Bibcode:1993CPL...202....1M. doi:10.1016/0009-2614(93)85341-K.
- Löwdin, Per-Olov (1993). "Some remarks on the resemblance theorems associated with various orthonormalization procedures". International Journal of Quantum Chemistry. 48 (4). ss. 225–232. doi:10.1002/qua.560480403. Bibcode: 1993IJQC...48..225L
- Bartlett, Rodney J.; Deumens, Erik; Löwdin, Per-Olov; Micha, David A.; Monkhorst, Hendrik J.; Sabin, John R.; Trickey, Samuel B.; Zerner, Michael C. (1994). "On the occasion of Yngve Öhrn's 60th birthday". International Journal of Quantum Chemistry. 52 (S28). ss. 3–5. doi:10.1002/qua.560520803.
- Löwdin, Per-Olov (1996). "In memory of Jean-Louis Calais". International Journal of Quantum Chemistry. 57 (1). ss. 1–2. doi:10.1002/qua.560570102.
- Löwdin, Per-Olov (1997). "Some aspects on the development of the natural sciences and their importance for modern society and for our global environment". International Journal of Quantum Chemistry. 64 (2). ss. 158–169. doi:10.1002/(SICI)1097-461X(1997)64:2<157::AID-QUA2>3.0.CO;2-V. Bibcode: 1997IJQC...64..158L
- Löwdin, Per-Olov (1998). Some comments on the foundations of physics (İngilizce). World Scientific. ISBN 981-02-2913-5.
- Löwdin, Per-Olov (1998). "Some aspects on the Bloch-Lindgren equation and a comparison with the partitioning technique". Advances in Quantum Chemistry. Advances in Quantum Chemistry. Cilt 30. ss. 415–432. Bibcode:1998AdQC...30..415L. doi:10.1016/S0065-3276(08)60520-1. ISBN 978-0-12-034830-5. Bibcode: 1998AdQC...30..415L
- Löwdin, Per-Olov (2001). "Quantum theory of cohesive properties of solids". Advances in Physics. 50 (6). ss. 597–756. Bibcode:2001AdPhy..50..597L. doi:10.1080/00018730110102196. Bibcode: 2001AdPhy..50..597L