Testing the density matrix expansion against ab initio calculations of trapped neutron drops
Abstract
Microscopic input to a universal nuclear energy density functional can be provided through the density matrix expansion (DME), which has recently been revived and improved. Several DME implementation strategies are tested for neutron drop systems in harmonic traps by comparing to HartreeFock (HF) and ab initio nocore full configuration (NCFC) calculations with a model interaction (Minnesota potential). The new DME with exact treatment of Hartree contributions is found to best reproduce HF results and supplementing the functional with fit Skyrmelike contact terms shows systematic improvement toward the full NCFC results.
 Authors:
 Michigan State University, East Lansing
 Ohio State University
 ORNL
 University of Tennessee, Knoxville (UTK) & Oak Ridge National Laboratory (ORNL)
 Iowa State University
 Publication Date:
 Research Org.:
 Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
 Sponsoring Org.:
 USDOE
 OSTI Identifier:
 1037058
 DOE Contract Number:
 DEAC0500OR22725
 Resource Type:
 Journal Article
 Resource Relation:
 Journal Name: Physical Review, C (Nuclear Physics); Journal Volume: 84; Journal Issue: 4
 Country of Publication:
 United States
 Language:
 English
 Subject:
 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; CONFIGURATION; DENSITY MATRIX; FUNCTIONALS; HARMONICS; IMPLEMENTATION; NEUTRONS; NUCLEAR ENERGY; TESTING
Citation Formats
Bogner, S. K., Hergert, H., Furnstahl, R. J., Kortelainen, Erno M, Stoitsov, M. V., Maris, Pieter, and Vary, J. P. Testing the density matrix expansion against ab initio calculations of trapped neutron drops. United States: N. p., 2011.
Web.
Bogner, S. K., Hergert, H., Furnstahl, R. J., Kortelainen, Erno M, Stoitsov, M. V., Maris, Pieter, & Vary, J. P. Testing the density matrix expansion against ab initio calculations of trapped neutron drops. United States.
Bogner, S. K., Hergert, H., Furnstahl, R. J., Kortelainen, Erno M, Stoitsov, M. V., Maris, Pieter, and Vary, J. P. 2011.
"Testing the density matrix expansion against ab initio calculations of trapped neutron drops". United States.
doi:.
@article{osti_1037058,
title = {Testing the density matrix expansion against ab initio calculations of trapped neutron drops},
author = {Bogner, S. K. and Hergert, H. and Furnstahl, R. J. and Kortelainen, Erno M and Stoitsov, M. V. and Maris, Pieter and Vary, J. P.},
abstractNote = {Microscopic input to a universal nuclear energy density functional can be provided through the density matrix expansion (DME), which has recently been revived and improved. Several DME implementation strategies are tested for neutron drop systems in harmonic traps by comparing to HartreeFock (HF) and ab initio nocore full configuration (NCFC) calculations with a model interaction (Minnesota potential). The new DME with exact treatment of Hartree contributions is found to best reproduce HF results and supplementing the functional with fit Skyrmelike contact terms shows systematic improvement toward the full NCFC results.},
doi = {},
journal = {Physical Review, C (Nuclear Physics)},
number = 4,
volume = 84,
place = {United States},
year = 2011,
month = 1
}
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