Towards a consistent approach to nuclear structure: EFT of two- and many-body forces
نویسنده
چکیده
We review the nuclear forces currently in use, i. e., the high-precision NN potentials of the 1990’s and the nuclear twoand many-body forces based upon chiral effective field theory (EFT). We argue that the EFT approach is superior to any of the older schemes. Since accurate chiral forces are available now, the stage is set for microscopic nuclear struture to move into a new and exciting era.
منابع مشابه
Few-body physics in effective field theory
Effective Field Theory (EFT) provides a powerful framework that exploits a separation of scales in physical systems to perform systematically improvable, model-independent calculations. Particularly interesting are few-body systems with short-range interactions and large two-body scattering length. Such systems display remarkable universal features. In systems with more than two particles, a th...
متن کاملDescribing Nuclear Matter with Effective Field Theories
Nuclear forces have been studied in depth over the past fifty years, leading to excellent phenomenological descriptions. A recent resurgence of interest in this field has been fueled by the promise of systematic results from an effective field theory (EFT) analysis [1]. EFT techniques adapted to many-body systems may give new insight into the properties of nuclei and their connection to QCD. Th...
متن کاملRecent Developments in the Nuclear Many-body Problem
The study of quantum chromodynamics (QCD) over the past quarter century has had relatively little impact on the traditional approach to the low-energy nuclear many-body problem. Recent developments are changing this situation. New experimental capabilities and theoretical approaches are opening windows into the richness of many-body phenomena in QCD. A common theme is the use of effective field...
متن کاملThree-Body System with Short-Range Interactions
Within the framework of non-relativistic scalar effective field theory (EFT) it is shown that the amplitude for a particle scattering off a two-body bound state, in leading order EFT, is entirely determined by two-body parameters. No three-body forces are required at the leading order. The arbitrary parameter present in the solution of the equation of Skorniakov and Ter-Martirosian for doublet ...
متن کاملEffective Field Theory for Dilute Fermi Systems
The virtues of an effective field theory (EFT) approach to many-body problems are illustrated by deriving the expansion for the energy of an homogeneous, interacting Fermi gas at low density and zero temperature. A renormalization scheme based on dimensional regularization with minimal subtraction leads to a more transparent power-counting procedure and diagrammatic expansion than conventional ...
متن کامل