172 citations · 2.2k across the 119 of their papers we have counts for
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Evidence for Symplectic Symmetry in Ab Initio No-Core Shell Model Results for Light Nuclei
Tomas Dytrych, Kristina D. Sviratcheva, Chairul Bahri +2
Clear evidence for symplectic symmetry in low-lying states of C and O is reported. Eigenstates of C and O, determined within the framework of the no-cor…
Global Properties of fp-Shell Interactions in Many-nucleon Systems
K. D. Sviratcheva, J. P. Draayer, J. P. Vary
Spectral distribution theory, which can be used to compare microscopic interactions over a broad range of nuclei, is applied in an analysis of two modern effective interactions bas…
Underlying symmetries of realistic interactions and the nuclear many-body problem
K. D. Sviratcheva, J. P. Draayer, J. P. Vary
The present study brings forward important information, within the framework of spectral distribution theory, about the types of forces that dominate three realistic interactions,…
Microscopic Description of Isospin Mixing Pairing Correlations in the Framework of an Algebraic Sp(4) Model
K. D. Sviratcheva, A. I. Georgieva, J. P. Draayer
We explore isospin mixing beyond that due to the Coulomb interaction in the framework of an exactly solvable microscopic sp(4) algebraic approach. Specifically, we focus on the iso…
Isospin symmetry breaking in an algebraic pairing Sp(4) model
K. D. Sviratcheva, A. I. Georgieva, J. P. Draayer
An exactly solvable sp(4) algebraic approach extends beyond the traditional isospin conserving nuclear interaction to bring forward effects of isospin symmetry breaking and isospin…
Dynamical symmetry of isobaric analog 0+ states in medium mass nuclei
K. D. Sviratcheva, A. I. Georgieva, J. P. Draayer
An algebraic sp(4) shell model is introduced to achieve a deeper understanding and interpretation of the properties of pairing-governed 0+ states in medium mass atomic nuclei. The…
Physical Significance of q Deformation and Many-Body Interactions in Nuclei
K. D. Sviratcheva, C. Bahri, A. I. Georgieva +1
The quantum deformation concept is applied to a study of pairing correlations in nuclei with mass 40<A<100. While the nondeformed limit of the theory provides a reasonable overall…
Dynamical Symmetries Reflected in Realistic Interactions
K. D. Sviratcheva, J. P. Draayer, J. P. Vary
Realistic nucleon-nucleon (NN) interactions, derived within the framework of meson theory or more recently in terms of chiral effective field theory, yield new possibilities for ac…
Symplectic Symmetry and the Ab Initio No-Core Shell Model
Jerry P. Draayer, Tomas Dytrych, Kristina D. Sviratcheva +2
The symplectic symmetry of eigenstates for the in O and the and lowest and configurations of C that are well-converged within the fr…
Light Nuclei in the Framework of the Symplectic No-core Shell Model
Jerry P. Draayer, Tomas Dytrych, Kristina D. Sviratcheva +2
A symplectic no-core shell model (Sp-NCSM) is constructed with the goal of extending the {\it ab-initio} NCSM to include strongly deformed higher-oscillator-shell configurations an…
Fermion Systems with Fuzzy Symmetries (Leveraging the Known to Understand the Unknown)
J. P. Draayer, K. D. Sviratcheva, T. Dytrych +3
Microscopic models, which embody the simplicity and significance of a dynamical symmetry approach to nuclear structure, are reviewed. They can reveal striking features of atomic nu…
Exact boson mapping of the reduced BCS pairing Hamiltonian
Feng Pan, J. P. Draayer
An exact boson mapping of the reduced BCS (equal strength) pairing Hamiltonian is considered. In the mapping, fermion pair operators are mapped exactly to the corresponding bosons.…
Exact diagonalization for spin-1/2 chains and the first order quantum phase transitions of the XXX chain in a uniform transverse field
Feng Pan, Xin Guan, Nan Ma +2
A simple Mathematica code based on the differential realization of hard-core boson operators for finding exact solutions of the periodic-N spin-1/2 systems with or beyond nearest n…
First order quantum phase transitions in the XX spin chain
Feng Pan, Nan Ma, Xin Guan +1
Quantum phase transitional behavior of a finite periodic XX spin-1/2 chain with nearest neighbor interaction in a uniform transverse field is studied based on the simple exact solu…