Many-body Propagator Theory with Three-Body Interactions: a Path to Exotic Open Shell Isotopes
نویسنده
چکیده
Ab-initio predictions of nuclei with masses up to A⇠100 or more are becoming possible thanks to novel advances in computations and in the formalism of many-body physics. Some of the most fundamental issues include how to deal with many-nucleon interactions, how to calculate degenerate—open shell—systems, and pursuing ab-initio approaches to reaction theory. Self-consistent Green’s function (SCGF) theory is a natural approach to address these challenges. Its formalism has recently been extended to threeand many-body interactions and reformulated within the Gorkov framework to reach semi-magic open shell isotopes. These exciting developments, together with the predictive power of chiral nuclear Hamiltonians, are opening the path to understanding large portions of the nuclear chart, especially within the sd and pf shells. The present talk reviews the most recent advances in ab-initio nuclear structure and many-body theory that have been possible through the SCGF approach.
منابع مشابه
Investigation of strong force influence on behavior of nuclear energy levels in Calcium and Titanium isotopes: Based on quantum chaos theory
The atomic nucleus is a complex many-body system that consists of two types of fermion (neutron and proton). They are in the strong interaction. The statistical properties of energy levels and influence of strong force between these fermions are well described by random matrix theory. Resonance of energy levels depends on the Hamiltonian symmetry placed in one of the GOE, GUE and GSE ensembles ...
متن کامل- th / 0 70 10 47 v 1 1 7 Ja n 20 07 Shell Structure of Exotic Nuclei
Theoretical predictions and experimental discoveries for neutron-rich, short-lived nuclei far from stability indicate that the familiar concept of nucleonic shell structure should be considered as less robust than previously thought. The notion of single-particle motion in exotic nuclei is reviewed with a particular focus on three aspects: (i) variations of nuclear mean field with neutron exces...
متن کاملSelf-consistent Gorkov Green’s function calculations of one-nucleon spectral properties
Results from the newly developed Gorkov self-consistent Green's function approach are presented. Ab-initio spectral strength distributions for one-nucleon addition or removal calculated in doubly-closed shell 40 Ca and in semi-magic 44 Ca are briefly discussed. The object of the present communication is to illustrate the potential spectroscopic reach of the method. 1. Introduction In the last d...
متن کاملEffective interactions and shell model studies of heavy tin isotopes
We calculate the low-lying spectra of heavy tin isotopes from A = 120 to A = 130 using the 2s1d0g7/20h11/2 shell to define the model space. An effective interaction has been derived using 132Sn as closed core employing perturbative many-body techniques. We start from a nucleon–nucleon potential derived from modern meson exchange models. This potential is in turn renormalized for the given mediu...
متن کاملKinetic theory in curved space: a first quantised approach
We study the real time formalism of non-equilibrium many-body theory, in a first quantised language. We argue that on quantising the relativistic scalar particle in spacetime with Minkowski signature, we should study both propagations e −m)λ̃ and e −m)λ̃ on the particle world line. The path integral needs regulation at the mass shell p = m. If we regulate the two propagations independently we get...
متن کامل