Exact-exchange density functional theory for neutron drops

Journal Article · Fri Jul 15 00:00:00 EDT 2011 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.84.014318· OSTI ID:21596564

Drut, Joaquin E ^[1]; Platter, Lucas ^[2]

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1. Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545-0001 (United States)
2. Fundamental Physics, Chalmers University of Technology, SE-41296 Goeteborg (Sweden)

We compute the ground-state properties of finite systems of neutrons in an external harmonic trap, interacting via the Minnesota potential, using the ''exact-exchange'' form of orbital-dependent density functional theory. We compare our results with Hartree-Fock calculations and find very close agreement. Within the context of the interaction studied, we conclude that this simple orbital-dependent functional brings conventional nuclear density functional theory to the level of Hartree-Fock in an ab initio fashion. Our work is a first step toward higher order ab initio nuclear functionals based on realistic nucleon-nucleon interactions.

• OSTI ID: 21596564
• Journal Information: Physical Review. C, Nuclear Physics, Vol. 84, Issue 1; Other Information: DOI: 10.1103/PhysRevC.84.014318; (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
COMPARATIVE EVALUATIONS
COMPUTERIZED SIMULATION
DENSITY FUNCTIONAL METHOD
GROUND STATES
HARTREE-FOCK METHOD
NEUTRONS
NUCLEAR MATTER
NUCLEON-NUCLEON INTERACTIONS
TRAPS
APPROXIMATIONS
BARYON-BARYON INTERACTIONS
BARYONS
CALCULATION METHODS
ELEMENTARY PARTICLES
ENERGY LEVELS
EVALUATION
FERMIONS
HADRON-HADRON INTERACTIONS
HADRONS
INTERACTIONS
MATTER
NUCLEONS
PARTICLE INTERACTIONS
SIMULATION
VARIATIONAL METHODS