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Title: Second order Møller-Plesset and coupled cluster singles and doubles methods with complex basis functions for resonances in electron-molecule scattering

Abstract

The method of complex basis functions is applied to molecular resonances at correlated levels of theory. Møller-Plesset perturbation theory at second order and equation-of-motion electron attachment coupled-cluster singles and doubles (EOM-EA-CCSD) methods based on a non-Hermitian self-consistent-field reference are used to compute accurate Siegert energies for shape resonances in small molecules including N 2 - , CO - , CO 2 - , and CH 2 O - . Analytic continuation of complex θ-trajectories is used to compute Siegert energies, and the θ-trajectories of energy differences are found to yield more consistent results than those of total energies. Furthermore, the ability of such methods to accurately compute complex potential energy surfaces is investigated, and the possibility of using EOM-EA-CCSD for Feshbach resonances is explored in the context of e-helium scattering.

Authors:
 [1];  [2]; ORCiD logo [3];  [1]
  1. Univ. of California, Berkeley, CA (United States). Dept. of Chemistry; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Chemical Sciences Division
  2. Q-Chem, Inc., Pleasanton, CA (United States)
  3. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Chemical Sciences Division; Univ. of California, Davis, CA (United States). Dept. of Chemistry
Publication Date:
Research Org.:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE Office of Science (SC), Advanced Scientific Computing Research (ASCR)
OSTI Identifier:
1379891
Alternate Identifier(s):
OSTI ID: 1364667
Grant/Contract Number:  
AC02-05CH11231
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Chemical Physics
Additional Journal Information:
Journal Volume: 146; Journal Issue: 23; Journal ID: ISSN 0021-9606
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

White, Alec F., Epifanovsky, Evgeny, McCurdy, C. William, and Head-Gordon, Martin. Second order Møller-Plesset and coupled cluster singles and doubles methods with complex basis functions for resonances in electron-molecule scattering. United States: N. p., 2017. Web. doi:10.1063/1.4986950.
White, Alec F., Epifanovsky, Evgeny, McCurdy, C. William, & Head-Gordon, Martin. Second order Møller-Plesset and coupled cluster singles and doubles methods with complex basis functions for resonances in electron-molecule scattering. United States. https://doi.org/10.1063/1.4986950
White, Alec F., Epifanovsky, Evgeny, McCurdy, C. William, and Head-Gordon, Martin. Wed . "Second order Møller-Plesset and coupled cluster singles and doubles methods with complex basis functions for resonances in electron-molecule scattering". United States. https://doi.org/10.1063/1.4986950. https://www.osti.gov/servlets/purl/1379891.
@article{osti_1379891,
title = {Second order Møller-Plesset and coupled cluster singles and doubles methods with complex basis functions for resonances in electron-molecule scattering},
author = {White, Alec F. and Epifanovsky, Evgeny and McCurdy, C. William and Head-Gordon, Martin},
abstractNote = {The method of complex basis functions is applied to molecular resonances at correlated levels of theory. Møller-Plesset perturbation theory at second order and equation-of-motion electron attachment coupled-cluster singles and doubles (EOM-EA-CCSD) methods based on a non-Hermitian self-consistent-field reference are used to compute accurate Siegert energies for shape resonances in small molecules including N 2 - , CO - , CO 2 - , and CH 2 O - . Analytic continuation of complex θ-trajectories is used to compute Siegert energies, and the θ-trajectories of energy differences are found to yield more consistent results than those of total energies. Furthermore, the ability of such methods to accurately compute complex potential energy surfaces is investigated, and the possibility of using EOM-EA-CCSD for Feshbach resonances is explored in the context of e-helium scattering.},
doi = {10.1063/1.4986950},
journal = {Journal of Chemical Physics},
number = 23,
volume = 146,
place = {United States},
year = {Wed Jun 21 00:00:00 EDT 2017},
month = {Wed Jun 21 00:00:00 EDT 2017}
}

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Cited by: 27 works
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Works referenced in this record:

Equation-of-motion coupled-cluster method for the study of shape resonance
journal, June 2012

  • Ghosh, Aryya; Vaval, Nayana; Pal, Sourav
  • The Journal of Chemical Physics, Vol. 136, Issue 23
  • DOI: 10.1063/1.4729464

Complex absorbing potentials within EOM-CC family of methods: Theory, implementation, and benchmarks
journal, July 2014

  • Zuev, Dmitry; Jagau, Thomas-C.; Bravaya, Ksenia B.
  • The Journal of Chemical Physics, Vol. 141, Issue 2
  • DOI: 10.1063/1.4885056

The Hermitian representation of the complex-rotation method and its application to the 1s2s 2 2 S resonance of He -
journal, January 1991


Calculation of resonance energies and widths using the complex absorbing potential method
journal, December 1993

  • Riss, U. V.; Meyer, H. -D
  • Journal of Physics B: Atomic, Molecular and Optical Physics, Vol. 26, Issue 23
  • DOI: 10.1088/0953-4075/26/23/021

An efficient combination of computational techniques for investigating electronic resonance states in molecules
journal, October 2001

  • Santra, Robin; Cederbaum, Lorenz S.
  • The Journal of Chemical Physics, Vol. 115, Issue 15
  • DOI: 10.1063/1.1405117

Investigation of 2 P Be Shape Resonances Using a Quadratically Convergent Complex Multiconfigurational Self-Consistent Field Method
journal, December 2008

  • Samanta, Kousik; Yeager, Danny L.
  • The Journal of Physical Chemistry B, Vol. 112, Issue 50
  • DOI: 10.1021/jp806998n

New approach to the one-particle Green's function for finite Fermi systems
journal, September 1983


Implementation of exterior complex scaling in B-splines to solve atomic and molecular collision problems
journal, February 2004

  • McCurdy, C. William; Martín, Fernando
  • Journal of Physics B: Atomic, Molecular and Optical Physics, Vol. 37, Issue 4
  • DOI: 10.1088/0953-4075/37/4/017

A full coupled‐cluster singles and doubles model: The inclusion of disconnected triples
journal, February 1982

  • Purvis, George D.; Bartlett, Rodney J.
  • The Journal of Chemical Physics, Vol. 76, Issue 4
  • DOI: 10.1063/1.443164

Resonance state energies and lifetimes via analytic continuation of stabilization graphs
journal, April 1986

  • Frey, Regina F.; Simons, Jack
  • The Journal of Chemical Physics, Vol. 84, Issue 8
  • DOI: 10.1063/1.450017

Reflection-free complex absorbing potential for electronic structure calculations: Feshbach type autoionization resonance of Helium
journal, October 2006


Complex coordinate rotation of the electron propagator
journal, September 1980

  • Donnelly, Robert A.; Simons, Jack
  • The Journal of Chemical Physics, Vol. 73, Issue 6
  • DOI: 10.1063/1.440455

Extension of the Method of Complex Basis Functions to Molecular Resonances
journal, November 1978


The 2Πg shape resonance of acetylene anion: an investigation with the RAC method
journal, July 2016

  • Čurík, Roman; Paidarová, Ivana; Horáček, Jiří
  • The European Physical Journal D, Vol. 70, Issue 7
  • DOI: 10.1140/epjd/e2016-70133-6

Complex Kohn variational method: Application to low-energy electron-molecule collisions
journal, May 1988


Nuclear dynamics in resonant electron-molecule scattering beyond the local approximation: The 2.3-eV shape resonance in N 2
journal, September 1983


Resonance states by the generalized complex variational method
journal, October 1982


Complex coordinate calculations on autoionizing states of HeH and H2
journal, May 1999


Advances in molecular quantum chemistry contained in the Q-Chem 4 program package
journal, September 2014


Short-range stabilizing potential for computing energies and lifetimes of temporary anions with extrapolation methods
journal, January 2015

  • Sommerfeld, Thomas; Ehara, Masahiro
  • The Journal of Chemical Physics, Vol. 142, Issue 3
  • DOI: 10.1063/1.4905560

Application of complex coordinate SCF techniques to a molecular shape resonance: The 2 Π g state of N 2
journal, December 1980

  • Rescigno, T. N.; Orel, A. E.; McCurdy, C. W.
  • The Journal of Chemical Physics, Vol. 73, Issue 12
  • DOI: 10.1063/1.440100

First-Principles Calculations of the Energy and Width of the 2 A u Shape Resonance in p -Benzoquinone: A Gateway State for Electron Transfer
journal, March 2015

  • Kunitsa, Alexander A.; Bravaya, Ksenia B.
  • The Journal of Physical Chemistry Letters, Vol. 6, Issue 6
  • DOI: 10.1021/acs.jpclett.5b00207

Complex potential-energy function for the Σ u + 2 shape resonance state of H 2 at the self-consistent-field level
journal, May 1982


Electron–molecule collision calculations using the R-matrix method
journal, June 2010


Gaussian basis sets for use in correlated molecular calculations. IV. Calculation of static electrical response properties
journal, February 1994

  • Woon, David E.; Dunning, Thom H.
  • The Journal of Chemical Physics, Vol. 100, Issue 4
  • DOI: 10.1063/1.466439

Restricted and unrestricted non-Hermitian Hartree-Fock: Theory, practical considerations, and applications to metastable molecular anions
journal, August 2015

  • White, Alec F.; McCurdy, C. William; Head-Gordon, Martin
  • The Journal of Chemical Physics, Vol. 143, Issue 7
  • DOI: 10.1063/1.4928529

Low-Lying π* Resonances of Standard and Rare DNA and RNA Bases Studied by the Projected CAP/SAC–CI Method
journal, February 2016

  • Kanazawa, Yuki; Ehara, Masahiro; Sommerfeld, Thomas
  • The Journal of Physical Chemistry A, Vol. 120, Issue 9
  • DOI: 10.1021/acs.jpca.5b12190

On the possibility of analytically continuing stabilization graphs to determine resonance positions and widths accurately
journal, January 1983


A class of analytic perturbations for one-body Schrödinger Hamiltonians
journal, December 1971

  • Aguilar, J.; Combes, J. M.
  • Communications in Mathematical Physics, Vol. 22, Issue 4
  • DOI: 10.1007/bf01877510

A purely L 2 method for calculating resonance widths
journal, April 1978


Spectral properties of many-body Schrödinger operators with dilatation-analytic interactions
journal, December 1971

  • Balslev, E.; Combes, J. M.
  • Communications in Mathematical Physics, Vol. 22, Issue 4
  • DOI: 10.1007/bf01877511

New implementation of high-level correlated methods using a general block tensor library for high-performance electronic structure calculations
journal, July 2013

  • Epifanovsky, Evgeny; Wormit, Michael; Kuś, Tomasz
  • Journal of Computational Chemistry, Vol. 34, Issue 26
  • DOI: 10.1002/jcc.23377

Variational calculations of resonant states of H 2 -
journal, November 1978


Resonant States of H 2
journal, September 1967

  • Eliezer, I.; Taylor, H. S.; Williams, James K.
  • The Journal of Chemical Physics, Vol. 47, Issue 6
  • DOI: 10.1063/1.1712249

The definition of molecular resonance curves by the method of exterior complex scaling
journal, April 1979


Reflection-free complex absorbing potential for electronic structure calculations: Feshbach-type autoionization resonances of molecules
journal, July 2007

  • Sajeev, Y.; Moiseyev, Nimrod
  • The Journal of Chemical Physics, Vol. 127, Issue 3
  • DOI: 10.1063/1.2753485

High-resolution measurement of the helium 1 s 2 s 2 S 2 resonance profile
journal, May 1981


Application of higher order decouplings of the dilated electron propagator to 2Π CO−, 2Πg N2− and 2Πg C2H2− shape resonances
journal, September 2001

  • Mahalakshmi, S.; Venkatnathan, Arun; Mishra, Manoj K.
  • The Journal of Chemical Physics, Vol. 115, Issue 10
  • DOI: 10.1063/1.1394754

Potential energy curve of the X 2 Sigma u + resonance state of F 2 - computed by CAP/CI
journal, September 1999

  • Ingr, M.; Meyer, H-D; Cederbaum, L. S.
  • Journal of Physics B: Atomic, Molecular and Optical Physics, Vol. 32, Issue 19
  • DOI: 10.1088/0953-4075/32/19/103

On a simple way to calculate electronic resonances for polyatomic molecules
journal, November 2015

  • Horáček, J.; Paidarová, I.; Čurík, R.
  • The Journal of Chemical Physics, Vol. 143, Issue 18
  • DOI: 10.1063/1.4935052

Equation of motion coupled cluster method for electron attachment
journal, March 1995

  • Nooijen, Marcel; Bartlett, Rodney J.
  • The Journal of Chemical Physics, Vol. 102, Issue 9
  • DOI: 10.1063/1.468592

Electron- scattering resonances as a function of bond length
journal, February 1998

  • Stibbe, Darian T.; Tennyson, Jonathan
  • Journal of Physics B: Atomic, Molecular and Optical Physics, Vol. 31, Issue 4
  • DOI: 10.1088/0953-4075/31/4/027

Conversion of bound states to resonances with changing internuclear distance in molecular anions
journal, September 1983

  • Lauderdale, Jack G.; McCurdy, C. William; Hazi, Andrew U.
  • The Journal of Chemical Physics, Vol. 79, Issue 5
  • DOI: 10.1063/1.446068

Complex Coordinates in the Theory of Atomic and Molecular Structure and Dynamics
journal, October 1982


The 2B1 shape resonance in electron-formaldehyde scattering: an investigation using the dilated electron propagator method
journal, October 1998


Highly-excited double Rydberg states of He -
journal, November 1983

  • Buckman, S. J.; Hammond, P.; Read, F. H.
  • Journal of Physics B: Atomic and Molecular Physics, Vol. 16, Issue 21
  • DOI: 10.1088/0022-3700/16/21/024

Restricted Møller—Plesset theory for open-shell molecules
journal, November 1991


Complex-scaled equation-of-motion coupled-cluster method with single and double substitutions for autoionizing excited states: Theory, implementation, and examples
journal, March 2013

  • Bravaya, Ksenia B.; Zuev, Dmitry; Epifanovsky, Evgeny
  • The Journal of Chemical Physics, Vol. 138, Issue 12
  • DOI: 10.1063/1.4795750

Second-order calculation on the doublet Pi CO shape resonance
journal, March 1985

  • Donnelly, Robert A.
  • International Journal of Quantum Chemistry, Vol. 28, Issue S19
  • DOI: 10.1002/qua.560280834

Stabilization Method of Calculating Resonance Energies: Model Problem
journal, April 1970


Obtaining positions and widths of scattering resonances from a complex multiconfigurational self-consistent field state using the M 1 method
journal, January 2009

  • Samanta, Kousik; Yeager, Danny L.
  • International Journal of Quantum Chemistry
  • DOI: 10.1002/qua.22047

Ab initio calculation of energies and lifetimes of metastable dianions: The C22− resonance
journal, April 2000

  • Sommerfeld, T.; Tarantelli, F.; Meyer, H. -D.
  • The Journal of Chemical Physics, Vol. 112, Issue 15
  • DOI: 10.1063/1.481236

Stabilizing potentials in bound state analytic continuation methods for electronic resonances in polyatomic molecules
journal, January 2017

  • White, Alec F.; Head-Gordon, Martin; McCurdy, C. William
  • The Journal of Chemical Physics, Vol. 146, Issue 4
  • DOI: 10.1063/1.4974761

Calculation of the discrete component of resonance states in negative ions by variation of nuclear charges
journal, February 1985

  • Nestmann, B.; Peyerimhoff, S. D.
  • Journal of Physics B: Atomic and Molecular Physics, Vol. 18, Issue 4
  • DOI: 10.1088/0022-3700/18/4/009

Size-consistent wave functions for bond-breaking: the equation-of-motion spin-flip model
journal, April 2001


Complex-coordinate method.II. Resonance calculations with correlated target-state wave functions
journal, December 1978


Autoionizing states of H 2 and H 2 using the complex-scaling method
journal, September 1979


Efficient method to perform CAP/CI calculations for temporary anions
journal, January 2001

  • Sommerfeld, Thomas; Santra, Robin
  • International Journal of Quantum Chemistry, Vol. 82, Issue 5
  • DOI: 10.1002/qua.1042

Assessment of Various Electronic Structure Methods for Characterizing Temporary Anion States: Application to the Ground State Anions of N 2 , C 2 H 2 , C 2 H 4 , and C 6 H 6
journal, February 2014

  • Falcetta, Michael F.; DiFalco, Laura A.; Ackerman, Daniel S.
  • The Journal of Physical Chemistry A, Vol. 118, Issue 35
  • DOI: 10.1021/jp5003287

Cross sections for resonant vibrational excitation of N 2 by electron impact
journal, March 1981


Cusps, θ trajectories, and the complex virial theorem
journal, April 1981

  • Moiseyev, Nimrod; Friedland, Shmuel; Certain, Phillip R.
  • The Journal of Chemical Physics, Vol. 74, Issue 8
  • DOI: 10.1063/1.441624

Gaussian basis sets for use in correlated molecular calculations. I. The atoms boron through neon and hydrogen
journal, January 1989

  • Dunning, Thom H.
  • The Journal of Chemical Physics, Vol. 90, Issue 2
  • DOI: 10.1063/1.456153

Iterative approach to the Schwinger variational principle for electron-molecule collisions
journal, August 1980

  • Lucchese, Robert R.; Watson, Deborah K.; McKoy, Vincent
  • Physical Review A, Vol. 22, Issue 2
  • DOI: 10.1103/physreva.22.421

Coupled cluster methods for autoionisation resonances
journal, July 2014


Resonances in Electron Impact on Diatomic Molecules
journal, July 1973


Determination of the Resonance Energy and Width of the 2 B 2g Shape Resonance of Ethylene with the Method of Analytical Continuation in the Coupling Constant
journal, April 2014

  • Horáček, Jiří; Paidarová, Ivana; Čurík, Roman
  • The Journal of Physical Chemistry A, Vol. 118, Issue 33
  • DOI: 10.1021/jp503075a

Core-excited and shape resonances of uracil
journal, January 2016

  • Fennimore, Mark A.; Matsika, Spiridoula
  • Physical Chemistry Chemical Physics, Vol. 18, Issue 44
  • DOI: 10.1039/c6cp05342d

Complex absorbing potentials in the framework of electron propagator theory. I. General formalism
journal, September 2002

  • Santra, Robin; Cederbaum, Lorenz S.
  • The Journal of Chemical Physics, Vol. 117, Issue 12
  • DOI: 10.1063/1.1501903

Analysis of the first Feshbach resonances in electron collisions in rare gases
journal, April 1993


Complex self-consistent field and multireference single- and double-excitation configuration interaction calculations for the Πg2 resonance state of N2−
journal, December 2006

  • Honigmann, Michael; Buenker, Robert J.; Liebermann, Heinz-Peter
  • The Journal of Chemical Physics, Vol. 125, Issue 23
  • DOI: 10.1063/1.2403856

Two-photon double ionization of H 2 at 30 eV using exterior complex scaling
journal, June 2009

  • Morales, F.; Martín, F.; Horner, D. A.
  • Journal of Physics B: Atomic, Molecular and Optical Physics, Vol. 42, Issue 13
  • DOI: 10.1088/0953-4075/42/13/134013

Description of few-body systems via analytical continuation in coupling constant
journal, February 1977

  • Kukulin, V. I.; Krasnopol'sky, V. M.
  • Journal of Physics A: Mathematical and General, Vol. 10, Issue 2
  • DOI: 10.1088/0305-4470/10/2/002

Advantages of complex scaling only the most diffuse basis functions in simultaneous description of both resonances and bound states
journal, September 2015


Multipartitioning many-body perturbation theory calculations on temporary anions: applications to N   2 and CO  
journal, May 2004

  • Izmaylov, Artur F.; Adamson, Serguei O.; Zaitsevskii, Andréi
  • Journal of Physics B: Atomic, Molecular and Optical Physics, Vol. 37, Issue 11
  • DOI: 10.1088/0953-4075/37/11/009

CAP/SAC-CI method for calculating resonance states of metastable anions
journal, June 2012


Complex absorbing potential based equation-of-motion coupled cluster method for the potential energy curve of CO2− anion
journal, October 2014

  • Ghosh, Aryya; Vaval, Nayana; Pal, Sourav
  • The Journal of Chemical Physics, Vol. 141, Issue 16
  • DOI: 10.1063/1.4899280

Gaussian basis sets for use in correlated molecular calculations. V. Core‐valence basis sets for boron through neon
journal, September 1995

  • Woon, David E.; Dunning, Thom H.
  • The Journal of Chemical Physics, Vol. 103, Issue 11
  • DOI: 10.1063/1.470645

CI method for determining the location and width of resonances in electron-molecule collision processes
journal, November 1985

  • Nestmann, B. M.; Peyerimhoff, S. D.
  • Journal of Physics B: Atomic and Molecular Physics, Vol. 18, Issue 21
  • DOI: 10.1088/0022-3700/18/21/017

Complex basis functions revisited: Implementation with applications to carbon tetrafluoride and aromatic N-containing heterocycles within the static-exchange approximation
journal, February 2015

  • White, Alec F.; Head-Gordon, Martin; McCurdy, C. William
  • The Journal of Chemical Physics, Vol. 142, Issue 5
  • DOI: 10.1063/1.4906940

Treatment of resonances with the dilated electron propagator: The 2 P shape resonance in e ‐Mg scattering
journal, August 1983

  • Mishra, Manoj; Kurtz, Henry A.; Goscinski, Osvaldo
  • The Journal of Chemical Physics, Vol. 79, Issue 4
  • DOI: 10.1063/1.445967

Resonance structure in elastic electron scattering from helium, neon and argon
journal, May 1977

  • Brunt, J. N. H.; King, G. C.; Read, F. H.
  • Journal of Physics B: Atomic and Molecular Physics, Vol. 10, Issue 7
  • DOI: 10.1088/0022-3700/10/7/018

Optical potential stabilisation method for predicting resonance levels
journal, November 1985


Quadratic form techniques and the Balslev-Combes theorem
journal, March 1972

  • Simon, Barry
  • Communications in Mathematical Physics, Vol. 27, Issue 1
  • DOI: 10.1007/bf01649654

Autoionization widths by Stieltjes imaging applied to Lanczos pseudospectra
journal, January 2011

  • Kopelke, S.; Gokhberg, K.; Cederbaum, L. S.
  • The Journal of Chemical Physics, Vol. 134, Issue 2
  • DOI: 10.1063/1.3523982

Convergence of the projected optical potential in a complex Kohn calculation of elastic e-He scattering
journal, February 1993

  • Gil, T. J.; McCurdy, C. W.; Lengsfield, B. H.
  • Journal of Physics B: Atomic, Molecular and Optical Physics, Vol. 26, Issue 3
  • DOI: 10.1088/0953-4075/26/3/021

The dilated electron propagator: a bi-orthogonal approach
journal, July 1981


Atomic negative ions: structure, dynamics and collisions
journal, May 2004


Optical potentials for electron-molecule scattering: A comparative study on the N 2 Π g 2 resonance
journal, November 1989


Derivations of universal exact complex absorption potentials by the generalized complex coordinate method
journal, April 1998


The iterative calculation of a few of the lowest eigenvalues and corresponding eigenvectors of large real-symmetric matrices
journal, January 1975


A novel electron scattering apparatus combining a laser photoelectron source and a triply differentially pumped supersonic beam target: characterization and results for the $ \mathsf {He^-(1s 2s^2)}$ resonance
journal, January 2003

  • Gopalan, A.; Bömmels, J.; Götte, S.
  • The European Physical Journal D - Atomic, Molecular and Optical Physics, Vol. 22, Issue 1
  • DOI: 10.1140/epjd/e2002-00219-7

Electron transmission spectroscopy: Resonances in triatomic molecules and hydrocarbons
journal, January 1973

  • Sanche, L.; Schulz, G. J.
  • The Journal of Chemical Physics, Vol. 58, Issue 2
  • DOI: 10.1063/1.1679228

Resonance Scattering of Slow Electrons from H 2 and CO Angular Distributions
journal, September 1968


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Bound and continuum-embedded states of cyanopolyyne anions
journal, January 2018

  • Skomorowski, Wojciech; Gulania, Sahil; Krylov, Anna I.
  • Physical Chemistry Chemical Physics, Vol. 20, Issue 7
  • DOI: 10.1039/c7cp08227d

Resolution-of-the-identity approximation for complex-scaled basis functions
journal, September 2019

  • Hernández Vera, Mario; Jagau, Thomas-C.
  • The Journal of Chemical Physics, Vol. 151, Issue 11
  • DOI: 10.1063/1.5119695

A Schwarz inequality for complex basis function methods in non-Hermitian quantum chemistry
journal, November 2019

  • Thompson, Travis H.; Ochsenfeld, Christian; Jagau, Thomas-C.
  • The Journal of Chemical Physics, Vol. 151, Issue 18
  • DOI: 10.1063/1.5123541

Comparative study of methodologies for calculating metastable states of small to medium-sized molecules
journal, December 2019

  • Thodika, Mushir; Fennimore, Mark; Karsili, Tolga N. V.
  • The Journal of Chemical Physics, Vol. 151, Issue 24
  • DOI: 10.1063/1.5134700

Electron-spectral-line profiles of resonances by attosecond XUV or x-ray pulses
journal, November 2017


Feshbach projection XMCQDPT2 model for metastable electronic states
preprint, January 2019