Concepedia

Intruder State Problem

The Intruder State Problem is a pathological instability in multireference perturbation theory arising when a nonphysical electronic state intrudes into the reference space due to near-degeneracy, thereby distorting the wavefunction and compromising the reliability of energy corrections.

116

Publications

8.3K

Citations

364

Authors

132

Institutions

Publications per year

2017–2026

10

Parents

Publications

116

Introduction of <i>n</i>-electron valence states for multireference perturbation theory

Celestino Angeli, Renzo Cimiraglia, Stefano Evangelisti et al. · The Journal of Chemical Physics · 2001 · 1.9K citations

, , +17

Convergent Theory for Effective Interaction in Nuclei

Kenji Suzuki, S. Y. Lee · Progress of Theoretical Physics · 1980 · 407 citations · Full text

, , +13

Intermediate Hamiltonians as a new class of effective Hamiltonians

Jean‐Paul Malrieu, Philippe Durand, J. P. Daudey · Journal of Physics A Mathematical and General · 1985 · 381 citations

, , +13

Intruder states in very neutron-deficient Hg, Pb and Po nuclei

R. Julin, K. Helariutta, M. Muikku · Journal of Physics G Nuclear and Particle Physics · 2001 · 219 citations

, , +10

Intruder state avoidance multireference Møller–Plesset perturbation theory

Henryk A. Witek, Yoong‐Kee Choe, James P. Finley et al. · Journal of Computational Chemistry · 2002 · 199 citations

, , +13

1–5 of 116

Authors

364

  1. KH
    K. Heyde

    Ghent University, Belgium

    10 publications · 626 citations

    10

    h-index

  2. SC
    Sudip Chattopadhyay

    Indian Institute of Engineering Science and Technology, Shibpur, India

    6 publications · 190 citations

    6

    h-index

  3. PV
    P. Van Duppen

    KU Leuven, Belgium

    6 publications · 490 citations

    6

    h-index

  4. RK
    Rajat K. Chaudhuri

    Indian Institute of Astrophysics, India

    5 publications · 168 citations

    5

    h-index

  5. JW
    J.L. Wood

    Georgia Institute of Technology, United States

    4 publications · 267 citations

    4

    h-index

1–5 of 364

Institutions

132

  1. Université Toulouse III - Paul Sabatier

    Toulouse, France

    9 h-index

    18 publications

    7.5K citations

  2. KU Leuven

    Leuven, Belgium

    8 h-index

    38 publications

    2.6K citations

  3. Laboratoire de Chimie et Physique Quantiques

    Toulouse, France

    8 h-index

    17 publications

    7.4K citations

  4. Georgia Institute of Technology

    Atlanta, United States

    6 h-index

    11 publications

    630 citations

  5. Centre National de la Recherche Scientifique

    Paris, France

    5 h-index

    11 publications

    435 citations

  6. University of Jyväskylä

    Jyväskylä, Finland

    5 h-index

    34 publications

    907 citations

  7. The University of Tokyo

    Tokyo, Japan

    5 h-index

    18 publications

    2.3K citations

  8. Indian Institute of Engineering Science and Technology, Shibpur

    Howrah, India

    5 h-index

    6 publications

    105 citations

1–8 of 132

Venues

  1. The Journal of Chemical Physics

    27 publications · 3.2K citations

    21

    h-index

  2. Physics Letters B

    15 publications · 895 citations

    15

    h-index

  3. Physical Review C

    PRC · 13 publications · 527 citations

    11

    h-index

  4. Nuclear Physics A

    7 publications · 464 citations

    7

    h-index

  5. Journal of Chemical Theory and Computation

    JCTC · 6 publications · 270 citations

    6

    h-index

1–5