301 citations · 2.3k across the 24 of their papers we have counts for
23 papers · 1 filter
Hartree-Fock Many-Body Perturbation Theory for Nuclear Ground-States
Alexander Tichai, Joachim Langhammer, Sven Binder +1
We investigate the order-by-order convergence behavior of many-body perturbation theory (MBPT) as a simple and efficient tool to approximate the ground-state energy of closed-shell…
Ab Initio No Core Shell Model - Recent Results and Further Prospects
James P. Vary, Pieter Maris, Hugh Potter +14
There has been significant recent progress in solving the long-standing problems of how nuclear shell structure and collective motion emerge from underlying microscopic inter-nucle…
Few-nucleon systems with state-of-the-art chiral nucleon-nucleon forces
S. Binder, A. Calci, E. Epelbaum +17
We apply improved nucleon-nucleon potentials up to fifth order in chiral effective field theory, along with a new analysis of the theoretical truncation errors, to study nucleon-de…
Continuum and Three-Nucleon Force Effects on 9Be Energy Levels
Joachim Langhammer, Petr Navratil, Sofia Quaglioni +3
We extend the recently proposed ab initio no-core shell model with continuum to include three-nucleon (3N) interactions beyond the few-body domain. The extended approach allows for…
Low-energy neutron-deuteron reactions with N3LO chiral forces
J. Golak, R. Skibinski, K. Topolnicki +16
We solve three-nucleon Faddeev equations with nucleon-nucleon and three-nucleon forces derived consistently in the framework of chiral perturbation theory at next-to-next-to-next-t…
Ab Initio Multi-Reference In-Medium Similarity Renormalization Group Calculations of Even Calcium and Nickel Isotopes
H. Hergert, S. K. Bogner, T. D. Morris +4
We use the newly developed Multi-Reference In-Medium Similarity Renormalization Group to study all even isotopes of the calcium and nickel isotopic chains, based on two- plus three…
Ab Initio study of neutron drops with chiral Hamiltonians
H. D. Potter, S. Fischer, P. Maris +5
We report ab initio calculations for neutron drops in a 10 MeV external harmonic-oscillator trap using chiral nucleon-nucleon plus three-nucleon interactions. We present total bind…
C properties with evolved chiral three-nucleon interactions
P. Maris, J. P. Vary, A. Calci +3
We investigate selected static and transition properties of C using ab initio No-Core Shell Model (NCSM) methods with chiral two- and three-nucleon interactions. We adopt th…
Ab Initio Description of p-Shell Hypernuclei
Roland Wirth, Daniel Gazda, Petr Navrátil +3
We present the first ab initio calculations for p-shell single-Lambda hypernuclei. For the solution of the many-baryon problem, we develop two variants of the no-core shell model w…
Nonperturbative shell-model interactions from the in-medium similarity renormalization group
S. K. Bogner, H. Hergert, J. D. Holt +5
We present the first ab initio construction of valence-space Hamiltonians for medium-mass nuclei based on chiral two- and three-nucleon interactions using the in-medium similarity…
Progress on Light-Ion Fusion Reactions with Three-Nucleon Forces
Guillaume Hupin, Sofia Quaglioni, Joachim Langhammer +3
The description of structural and dynamical properties of nuclei starting from the fundamental interaction between nucleons has been a long-standing goal in nuclear physics. The ab…
Ab Initio Path to Heavy Nuclei
Sven Binder, Joachim Langhammer, Angelo Calci +1
We present the first ab initio calculations of nuclear ground states up into the domain of heavy nuclei, spanning the range from 16-O to 132-Sn based on two- plus three-nucleon int…
Evolved Chiral NN+3N Hamiltonians for Ab Initio Nuclear Structure Calculations
Robert Roth, Angelo Calci, Joachim Langhammer +1
We discuss the building blocks for a consistent inclusion of chiral three-nucleon (3N) interactions into ab initio nuclear structure calculations beyond the lower p-shell. We highl…
Extension of coupled-cluster theory with a non-iterative treatment of connected triply excited clusters to three-body Hamiltonians
Sven Binder, Piotr Piecuch, Angelo Calci +3
We generalize the coupled-cluster (CC) approach with singles, doubles, and the non-iterative treatment of triples termed CCSD(T) to Hamiltonians containing three-body interactio…
Ab initio many-body calculations of nucleon-4He scattering with three-nucleon forces
Guillaume Hupin, Joachim Langhammer, Petr Navrátil +3
We extend the ab initio no-core shell model/resonating-group method to include three-nucleon (3N) interactions for the description of nucleon-nucleus collisions. We outline the for…
Ab Initio Calculations of Even Oxygen Isotopes with Chiral Two- Plus Three-Nucleon Interactions
H. Hergert, S. Binder, A. Calci +2
We formulate the In-Medium Similarity Renormalization Group (IM-SRG) for open-shell nuclei using a multi-reference formalism based on a generalized Wick theorem introduced in quant…
In-Medium Similarity Renormalization Group with Chiral Two- Plus Three-Nucleon Interactions
H. Hergert, S. K. Bogner, S. Binder +4
We use the recently proposed In-Medium Similarity Renormalization Group (IM-SRG) to carry out a systematic study of closed-shell nuclei up to $\nuc{Ni}{56}$, based on chiral two- p…
Ab Initio Calculations of Medium-Mass Nuclei with Explicit Chiral 3N Interactions
Sven Binder, Joachim Langhammer, Angelo Calci +2
We present the first ab initio coupled-cluster calculations of medium-mass nuclei with explicit chiral three-nucleon (3N) interactions. Using a spherical formulation of coupled clu…
No-Core Shell Model Analysis of Light Nuclei
Sofia Quaglioni, Petr Navratil, Guillaume Hupin +3
The fundamental description of both structural properties and reactions of light nuclei in terms of constituent protons and neutrons interacting through nucleon-nucleon and three-n…
Spectra of Open-Shell Nuclei with Padé-Resummed Degenerate Perturbation Theory
Joachim Langhammer, Robert Roth, Christina Stumpf
We apply degenerate many-body perturbation theory at high orders for the ab-initio description of ground states and excitation spectra of open-shell nuclei using soft realistic nuc…
Ab Initio Calculations of Medium-Mass Nuclei with Normal-Ordered Chiral NN+3N Interactions
Robert Roth, Sven Binder, Klaus Vobig +3
We study the use of truncated normal-ordered three-nucleon interactions in ab initio nuclear structure calculations starting from chiral two- plus three-nucleon Hamiltonians evolve…
Similarity-Transformed Chiral NN+3N Interactions for the Ab Initio Description of 12-C and 16-O
Robert Roth, Joachim Langhammer, Angelo Calci +2
We present first ab initio no-core shell model (NCSM) calculations using similarity renormalization group (SRG) transformed chiral two-nucleon (NN) plus three-nucleon (3N) interact…
Pade-resummed high-order perturbation theory for nuclear structure calculations
Robert Roth, Joachim Langhammer
We apply high-order many-body perturbation theory for the calculation of ground-state energies of closed-shell nuclei using realistic nuclear interactions. Using a simple recursive…