Toward ab initio density functional theory for nuclei

• We survey approaches to non-relativistic density functional theory (DFT) for nuclei using progress toward ob initio DFT for Coulomb systems as a guide. Ab initio DFT starts with a microscopic Hamiltonian and is naturally formulated using orbital-based functionals, which generalize the conventional 'local density plus gradients' form. The orbitals satisfy single-particle equations with multiplicative (local) potentials. The DFT functionals can be developed starting from internucleon forces using wavefunction-based methods or by Legendre transform via effective actions. We describe known and unresolved issues for applying these formulations to the nuclear many-body problem and discuss how ab initio approaches can help improve empirical energy density functionals. (C) 2009 Elsevier B.V. All rights reserved.

Ämnesord

NATURVETENSKAP  -- Fysik -- Subatomär fysik (hsv//swe)

NATURAL SCIENCES  -- Physical Sciences -- Subatomic Physics (hsv//eng)

Nyckelord

ground-state energy

matrix expansion

density functional theory

many-fermion system

low-energy qcd

low-momentum interactions

effective-field theory

many-body perturbation theory

nuclear structure

inhomogeneous electron-gas

equation-of-state

local composite-operators

mean-field

Publikations- och innehållstyp

art (ämneskategori)

ref (ämneskategori)