Complex coupled-cluster approach to an ab-initio description of open quantum systems

Abstract

We develop ab-initio coupled-cluster theory to describe resonant and weakly bound states along the neutron drip line. We compute the ground states of the helium chain 3-10He within coupled-cluster theory in singles and doubles (CCSD) approximation. We employ a spherical Gamow-Hartree-Fock basis generated from the low-momentum N3LO nucleon-nucleon interaction. This basis treats bound, resonant, and continuum states on equal footing, and is therefore optimal for the description of properties of drip line nuclei where continuum features play an essential role. Within this formalism, we present an ab-initio calculation of energies and decay widths of unstable nuclei starting from realistic interactions.

4 pages, revtex4

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• Quantum Monte Carlo calculations of nuclei with A \leq 7
• Quantum Monte Carlo Calculations of Light Nuclei
• Model-independent low momentum nucleon interaction from phase shift equivalence
• Strongly enhanced inelastic collisions in a Bose-Einstein condensate near Feshbach resonances
• Gamow Shell Model Description of Neutron-Rich Nuclei
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• Ab initio coupled-cluster study of 16-O
• Study of the ${}^{7}Be(p,\gamma {)}^{8}B$ and ${}^{7}Li(n,\gamma {)}^{8}Li$ capture reactions using the shell model embedded in the continuum
• Dynamics of quantum systems
• Proton-Neutron Coupling in the Gamow Shell Model: the Lithium Chain
• Density matrix renormalization group approach for many-body open quantum systems
• Gamow shell model and realistic nucleon-nucleon interactions
• Ground state correlations and mean-field in ${}^{16}$O
• Analysis of the 16O(p,gamma)17F capture reaction using the shell model embedded in the continuum
• Proton radii of 4,6,8He isotopes from high-precision nucleon-nucleon interactions
• Microscopic theory of the two-proton radioactivity

Cited by in corpus (64)

• Coupled-cluster computations of atomic nuclei
• Recent developments in no-core shell-model calculations
• Chiral Three-Nucleon Interactions in Light Nuclei, Neutron-$\alpha$ Scattering, and Neutron Matter
• Shell Model in the Complex Energy Plane
• Ab initio coupled-cluster approach to nuclear structure with modern nucleon-nucleon interactions
• Continuum effects and three-nucleon forces in neutron-rich oxygen isotopes
• Unified ab initio approaches to nuclear structure and reactions
• Recent development of complex scaling method for many-body resonances and continua in light nuclei
• Medium-mass nuclei from chiral nucleon-nucleon interactions
• Unified ab initio approach to bound and unbound states: no-core shell model with continuum and its application to 7He
• Structure of ${}^{78}$Ni from first principles computations
• Ab initio description of the exotic unbound 7He nucleus
• Symmetry-guided large-scale shell-model theory
• Ab-initio No-Core Gamow Shell Model calculations with realistic interactions
• Ab initio many-body calculations of nucleon scattering on 4He, 7Li, 7Be, 12C and 16O
• Broyden's Method in Nuclear Structure Calculations
• Giant and pigmy dipole resonances in 4He, 16,22O, and 40Ca from chiral nucleon-nucleon interactions
• Symmetry broken and restored coupled-cluster theory I. Rotational symmetry and angular momentum
• Ab initio computation of the 17F proton-halo state and resonances in A = 17 nuclei
• Elastic proton scattering of medium mass nuclei from coupled-cluster theory
• Emergent properties of nuclei from ab initio coupled-cluster calculations
• Charge radii and neutron correlations in helium halo nuclei
• Quasiparticle and quasihole states of nuclei around 56Ni
• Ab-initio computation of neutron-rich oxygen isotopes
• Living on the edge of stability, the limits of the nuclear landscape
• Ab initio coupled-cluster theory for open-shell nuclei
• Lattice methods for strongly interacting many-body systems
• Computational Nuclear Quantum Many-Body Problem: The UNEDF Project
• Nuclear Dynamics and Reactions in the Ab Initio Symmetry-Adapted Framework
• Matter and charge radius of 6He in the hyperspherical-harmonics approach
• Ab initio Gamow in-medium similarity renormalization group with resonance and continuum
• Nuclear Forces for Precision Nuclear Physics -- a collection of perspectives
• Gamow shell model description of proton scattering on ${}^{18}$Ne
• The roles of three-nucleon force and continuum coupling in mirror symmetry breaking of oxygen mass region
• Helium halo nuclei from low-momentum interactions
• Gamow shell-model calculations of drip-line oxygen isotopes
• Spherical coupled-cluster theory for open-shell nuclei
• Three-cluster dynamics within an ab initio framework
• Nucleon-$\alpha$ Scattering and Resonances in ${}^5$He and ${}^5$Li with JISP16 and Daejeon16 $NN$ interactions
• Ab initio calculations of nuclear widths via an integral relation
• Energy Spectrum of Neutron-Rich Helium Isotopes: Complex Made Simple
• Chiral three-nucleon force and continuum for dripline nuclei and beyond
• Pairing in the continuum: the quadrupole response of the Borromean nucleus 6He
• Ab-initio coupled-cluster calculations of ground and dipole excited states in 8He
• One-neutron removal strength of 7He into 6He using the complex scaling method
• Continuum and three-nucleon force in Borromean system: The 17Ne case
• Precise comparison of the Gaussian expansion method and the Gamow shell model
• Computation of spectroscopic factors with the coupled-cluster method
• Closed-shell properties of ${}^{24}$O with {\em ab initio} coupled-cluster theory
• Ab initio descriptions of $A=16$ mirror nuclei with resonance and continuum coupling
• Efficacy of the symmetry-adapted basis for ab initio nucleon-nucleus interactions for light- and intermediate-mass nuclei
• Complex valence-space effective operators for observables: the Gamow-Teller transition
• Ab initio translationally invariant nucleon-nucleus optical potentials
• Role of quadrupole deformation and continuum effects in the "island of inversion'' nuclei ${}^{28,29,31}$F
• Effective interactions and operators in no-core shell model
• New variational Monte Carlo method with an energy variance extrapolation for large-scale shell-model calculations
• Merging ab initio theory and few-body approach for $(d,p)$ reactions
• The six-nucleon Yakubovsky equations for 6He
• Nucleon-nucleon resonances at intermediate energies using a complex energy formalism
• Perspectives on few-body cluster structures in exotic nuclei
• Combined few-body and mean-field model for nuclei
• Coupled-cluster computations of optical potential for medium-mass nuclei
• Nuclei and chiral dynamics
• Nonlinear relativistic mean-field theory studies on He isotopes