Calvin Johnson

Academic Publications

Evolution and coexistence of low-lying configurations in the N=80 isotones

Y. X. Yu; C. Ma; Chong Qi; W. Q. Zhang; Calvin Johnson; et al.

Physical Review C, 2026, journal article

Nuclear physics

Radial excitations and their potential impact on Fermi β -decay rates

L. Xayavong; Y. Lim; N. A. Smirnova; Calvin Johnson

Physical Review C, 2026, journal article

Beta decay Nuclear physics Nuclear reactions

Radiative strength functions from the energy-localized Brink-Axel hypothesis

Oliver C. Gorton; Konstantinos Kravvaris; Jutta E. Escher; Calvin Johnson

Physical Review C, 2026, journal article

Nuclear physics Nuclear reactions Theoretical physics

Scattering phase shifts from overlap relations in the J -matrix method

Calvin Johnson; Bui Minh Loc; Austin Keller; Kenneth M. Nollett

Physical Review C, 2026, journal article

Quantum theory Scattering (Mathematics) Theoretical physics

Shannon entropy of optimized proton-neutron pair condensates

Shu-Yuan Liang; Yi Lu; Yang Lei; Calvin Johnson; Guan-Jian Fu; Jia Jie Shen

Physical Review C, 2025, journal article

Entropy (Information theory) Nuclear physics

A weak entanglement approximation for nuclear structure: A progress report

Calvin Johnson; Oliver C. Gorton

Journal of Subatomic Particles and Cosmology, 2025, journal article

Nuclear physics Nuclear structure Quantum entanglement

Quantum phase transition in atomic nuclei driven by competition between subshell closure and collective motion

S. T. Guo; Y. X. Yu; Calvin Johnson; et al.

Physical Review C, 2025, journal article

Nuclear collective models Nuclear physics Quantum theory

Uncertainties in tellurium-based dark matter searches stemming from nuclear structure uncertainties

Daniel J. Heimsoth; Rebecca Kowalski; Danielle H. Speller; Calvin Johnson; A. Baha Balantekin; Susan N. Coppersmith

Physical Review D, 2025, journal article

Dark matter (Astronomy) Nuclear structure Tellurium

Systematic Analysis of Double Gamow–Teller Sum Rules

Hong-Jin Xie; Yi Lu; Shu-Yuan Liang; Yang Lei; Calvin Johnson

Symmetry, 2025, journal article

Nuclear physics Sum rules (Physics) Theoretical physics

Unified description of low-lying states in rare-earth nuclei using the angular-momentum-projected number-conserved BCS method in a shell model framework

S. T. Guo; Y. X. Yu; Calvin Johnson; et al.

Physical Review C, 2025, journal article

Many-body problem Nuclear physics Nuclear structure Rare earth metals

Pervasiveness of shape coexistence in nuclear pair condensates

Y. Lei; J. Qi; Y. Lu; H. Jiang; Z. Z. Qin; D. Liu; Calvin Johnson

Physical Review C, 2024, journal article

Nuclear physics Nuclear structure Quantum theory Theoretical physics

Weak entanglement approximation for nuclear structure

Oliver C. Gorton; Calvin Johnson

Physical Review C, 2024, journal article

Nuclear physics Nuclear structure Theoretical physics

dmscatter: A fast program for WIMP-nucleus scattering

Oliver C. Gorton; Calvin Johnson; Changfeng Jiao; Jonathan Nikoleyczik

Computer Physics Communications, 2023, journal article

Computational physics Dark matter (Astronomy) Nuclear physics Quantum scattering

New insights into backbending in the symmetry-adapted shell-model framework

Nicholas D. Heller; Grigor H. Sargsyan; Kristina D. Launey; Calvin Johnson; Tomáš Dytrych; Jerry P. Draayer

Physical Review C, 2023, journal article

Nuclear shell theory Symmetry (Physics) Theoretical physics

Proton-neutron entanglement in the nuclear shell model

Calvin Johnson; Oliver C Gorton

Journal of Physics G: Nuclear and Particle Physics, 2023, journal article

Nuclear physics Nuclear shell theory Quantum entanglement Theoretical physics

Bootstrapped block Lanczos for large-dimension eigenvalue problems

Ryan M. Zbikowski; Calvin Johnson

Computer Physics Communications, 2023, journal article

Eigenvalues

Uncertainties on the EFT coupling limits for direct dark matter detection experiments stemming from uncertainties of target properties

Daniel J. Heimsoth; Brandon Lem; Anna M. Suliga; Calvin Johnson; A. Baha Balantekin; Susan N. Coppersmith

Physical Review D, 2023, journal article

Dark matter (Astronomy) Nuclear reactions

Uncertainty quantification of transition operators in the empirical shell model

Jordan M. R. Fox; Calvin Johnson; Rodrigo Navarro Perez

Physical Review C, 2023, journal article

Nuclear physics Quantum theory

An Alternative Approach to Quantum Imaginary Time Evolution

Calvin Johnson; Pejman Jouzdani; Eduardo R. Mucciolo; Ionel Stetcu

2022, journal article

Evolution equations Mathematical physics Quantum theory Theoretical physics

dmscatter: A Fast Program for WIMP-Nucleus Scattering

Calvin Johnson; Oliver Gorton; Changfeng Jiao; Jonathan Nikoleyczik

2022, journal article

Computational physics Computer programs Dark matter (Astronomy) Scattering (Physics)

Proton-neutron entanglement in the nuclear shell model

Calvin Johnson; Oliver C. Gorton

2022, journal article

Neutrons Nuclear shell theory Protons Quantum entanglement

Modified Brink-Axel hypothesis for astrophysical Gamow-Teller transitions

Raúl A. Herrera; Calvin Johnson; George M. Fuller

Physical Review C, 2022, journal article

Astrophysics Nuclear astrophysics Nuclear physics Theoretical physics

Nuclear states projected from a pair condensate

Yi Lu; Yang Lei; Calvin Johnson; Jia Jie Shen

Physical Review C, 2022, journal article

Bound states (Quantum mechanics) Nuclear forces (Physics) Nuclear physics Quantum theory

Towards precise and accurate calculations of neutrinoless double-beta decay

V Cirigliano; Z Davoudi; J Engel; R J Furnstahl; G Hagen; U Heinz; H Hergert; M Horoi; Calvin Johnson; et al.

Journal of Physics G: Nuclear and Particle Physics, 2022, journal article

Double beta decay Neutrinos Quantum theory Theoretical physics

Collective neutrino oscillations with tensor networks using a time-dependent variational principle

Michael J. Cervia; Pooja Siwach; Amol V. Patwardhan; A. B. Balantekin; S. N. Coppersmith; Calvin Johnson

Physical Review D, 2022, journal article

Collective behavior Quantum field theory Theoretical physics Variational principles

How effective is the Brink–Axel hypothesis for astrophysical weak rates?

Jameel-Un Nabi; Mazhar Nayab; Calvin Johnson

Journal of Physics G: Nuclear and Particle Physics, 2022, journal article

Nuclear astrophysics Nuclear physics Nuclear reactions Theoretical physics

Nucleon-pair truncation of the shell model for medium-heavy nuclei

Y. X. Yu; Y. Lu; G. J. Fu; Calvin Johnson; Z. Z. Ren

Physical Review C, 2022, journal article

Nuclear physics Nuclear shell theory Quantum theory

Alternative approach to quantum imaginary time evolution

Pejman Jouzdani; Calvin Johnson; Eduardo R. Mucciolo; Ionel Stetcu

Physical Review A, 2022, journal article

Computational physics Quantum computing Quantum theory Theoretical physics

Nucleon-pair coupling scheme in Elliott's SU(3) model

G. J. Fu; Calvin Johnson; P. Van Isacker; Zhongzhou Ren

Physical Review C, 2021, journal article

Nuclear models Nuclear physics Nuclear structure Theoretical physics

Tensor force role in β decays analyzed within the Gogny-interaction shell model

B. Dai; B. S. Hu; Y. Z. Ma; J. G. Li; S. M. Wang; Calvin Johnson; et al.

Physical Review C, 2021, journal article

Beta decay Nuclear forces (Physics) Nuclear shell theory Theoretical physics

Benchmarking angular-momentum projected Hartree–Fock as an approximation

Stephanie M Lauber; Hayden C Frye; Calvin Johnson

Journal of Physics G: Nuclear and Particle Physics, 2021, journal article

Angular momentum Computational chemistry Theoretical physics

Lipkin model on a quantum computer

Michael J. Cervia; A. B. Balantekin; S. N. Coppersmith; Calvin Johnson; et al.

Physical Review C, 2021, journal article

Physics Quantum computing Theoretical physics

Nucleon-pair approximation for nuclei from spherical to deformed regions

G. J. Fu; Calvin Johnson

Physical Review C, 2021, journal article

Nuclear physics Nuclear shell theory Nuclear structure Quantum theory

Rotational bands beyond the Elliott model

Ryan Zbikowski; Calvin Johnson; Anna E McCoy; Mark A Caprio; Patrick J Fasano

Journal of Physics G: Nuclear and Particle Physics, 2021, journal article

Interacting boson models Nuclear physics Quantum theory

Unmixing Symmetries

Calvin Johnson

Physical Review Letters, 2020, journal article

Group theory Symmetry (Mathematics) Symmetry groups Theoretical physics

Exact sum rules with approximate ground states

Calvin Johnson; Ken Anh Luu; Yi 義 Lu 路

Journal of Physics G: Nuclear and Particle Physics, 2020, journal article

Many-body problem Quantum theory Sum rules (Physics) Theoretical physics

From deformed Hartree-Fock to the nucleon-pair approximation

G.J. Fu; Calvin Johnson

Physics Letters B, 2020, journal article

Nuclear matter Nuclear physics

Uncertainty quantification of an empirical shell-model interaction using principal component analysis

Jordan M. R. Fox; Calvin Johnson; Rodrigo Navarro Perez

Physical Review C, 2020, journal article

Nuclear physics Principal components analysis Quantum theory

White paper: from bound states to the continuum

Calvin Johnson; et al.

Journal of Physics G: Nuclear and Particle Physics, 2020, journal article

Bound states (Quantum mechanics) Continuum (Mathematics) Quantum theory Theoretical physics

Convergence and efficiency of angular momentum projection

Calvin Johnson; Changfeng Jiao

Journal of Physics G: Nuclear and Particle Physics, 2019, journal article

Angular momentum (Nuclear physics) Momentum (Mechanics) Nuclear physics

Entanglement and collective flavor oscillations in a dense neutrino gas

Michael J. Cervia; Amol V. Patwardhan; A. B. Balantekin; S. N. Coppersmith; Calvin Johnson

Physical Review D, 2019, journal article

Astrophysics Neutrinos Quantum theory

Union of rotational and vibrational modes in generator-coordinate-type calculations, with application to neutrinoless double- β decay

Changfeng Jiao; Calvin Johnson

Physical Review C, 2019, journal article

Beta decay Nuclear physics Nuclear reactions Theoretical physics

Transition sum rules in the shell model

Calvin Johnson; Yi Lu

Physical Review C, 2018, journal article

Nuclear physics Nuclear shell theory

Quasidynamical symmetries in the backbending of chromium isotopes

Calvin Johnson; Raúl A. Herrera

Physical Review C, 2017, journal article

Backbending (Nuclear physics) Chromium Dynamics Symmetry (Physics)

Projection of angular momentum via linear algebra

Calvin Johnson; Kevin D. O'Mara

Physical Review C, 2017, journal article

Angular momentum Linear algebraic groups Theoretical physics

Tracing the evolution of nuclear forces under the similarity renormalization group

Calvin Johnson

Physics Letters B, 2017, journal article

Nuclear forces (Physics) Nuclear physics Renormalization group Similarity transformations

Spin-orbit decomposition ofab initionuclear wave functions

Calvin Johnson

Physical Review C, 2015, journal article

Nuclear physics Nuclear structure Theoretical physics Wave functions

Systematics of strength function sum rules

Calvin Johnson

Physics Letters B, 2015, journal article

Nuclear physics Statistical mechanics Sum rules (Physics) Systematics Association

Factorization in large-scale many-body calculations

Calvin Johnson; W. Erich Ormand; Plamen G. Krastev

Computer Physics Communications, 2013, journal article

Large scale systems Many-body problem Numerical analysis Theoretical physics

Sensitivity analysis of random two-body interactions

Calvin Johnson; Plamen G. Krastev

Physical Review C, 2010, journal article

Many-body problem Mathematics Physics Statistical mechanics

Model space truncation in shell-model fits

Calvin Johnson; G. F. Bertsch

Physical Review C, 2009, journal article

Computational physics Mathematical models Nuclear physics

Gamow-Teller transitions and deformation in the proton-neutron random phase approximation

Calvin Johnson; Ionel Stetcu

Physical Review C, 2004, journal article

Neutron-proton interactions Nuclear physics Theoretical physics

Calvin Johnson

Appointments

Scholarship

Academic Publications

Calvin Johnson

Appointments

Scholarship

Academic Publications

Older Academic Publications (47)