Tensor Forces and the GroundState Structure of Nuclei
Abstract
Twonucleon momentum distributions are calculated for the ground states of nuclei with mass number A {le} 8, using accurate variational Monte Carlo wave functions derived from a realistic Hamiltonian with two and threenucleon potentials. The momentum distribution of 'np' pairs is found to be much larger than that of 'pp' pairs for values of the relative momentum in the range (300600) MeV/c and vanishing total momentum. This large difference, more than an order of magnitude, is seen in all nuclei considered, and has a universal character originating from the tensor components present in any realistic nucleonnucleon potential. The correlations induced by the tensor force strongly influence the structure of 'np' pairs, which are known to be predominantly in deuteronlike states, while they are ineffective for 'pp' pairs, which are mostly in {sup 1}S{sub 0} states. These features should be easily observable in twonucleon knockout processes, for example in A(e,e{prime} np) and A(e,e{prime} pp) reactions.
 Authors:
 Publication Date:
 Research Org.:
 Thomas Jefferson National Accelerator Facility, Newport News, VA
 Sponsoring Org.:
 USDOE  Office of Energy Research (ER)
 OSTI Identifier:
 894644
 Report Number(s):
 JLABTHY06562; DOE/ER/401504105
TRN: US0700189
 DOE Contract Number:
 AC0506OR23177
 Resource Type:
 Journal Article
 Resource Relation:
 Journal Name: Phys.Rev.Lett.; Journal Volume: 98
 Country of Publication:
 United States
 Language:
 English
 Subject:
 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; DISTRIBUTION; GROUND STATES; HAMILTONIANS; MASS NUMBER; NUCLEI; NUCLEONNUCLEON POTENTIAL; TENSOR FORCES; WAVE FUNCTIONS
Citation Formats
Rocco Schiavilla. Tensor Forces and the GroundState Structure of Nuclei. United States: N. p., 2007.
Web. doi:10.1103/PhysRevLett.98.132501.
Rocco Schiavilla. Tensor Forces and the GroundState Structure of Nuclei. United States. doi:10.1103/PhysRevLett.98.132501.
Rocco Schiavilla. Thu .
"Tensor Forces and the GroundState Structure of Nuclei". United States.
doi:10.1103/PhysRevLett.98.132501. https://www.osti.gov/servlets/purl/894644.
@article{osti_894644,
title = {Tensor Forces and the GroundState Structure of Nuclei},
author = {Rocco Schiavilla},
abstractNote = {Twonucleon momentum distributions are calculated for the ground states of nuclei with mass number A {le} 8, using accurate variational Monte Carlo wave functions derived from a realistic Hamiltonian with two and threenucleon potentials. The momentum distribution of 'np' pairs is found to be much larger than that of 'pp' pairs for values of the relative momentum in the range (300600) MeV/c and vanishing total momentum. This large difference, more than an order of magnitude, is seen in all nuclei considered, and has a universal character originating from the tensor components present in any realistic nucleonnucleon potential. The correlations induced by the tensor force strongly influence the structure of 'np' pairs, which are known to be predominantly in deuteronlike states, while they are ineffective for 'pp' pairs, which are mostly in {sup 1}S{sub 0} states. These features should be easily observable in twonucleon knockout processes, for example in A(e,e{prime} np) and A(e,e{prime} pp) reactions.},
doi = {10.1103/PhysRevLett.98.132501},
journal = {Phys.Rev.Lett.},
number = ,
volume = 98,
place = {United States},
year = {Thu Mar 01 00:00:00 EST 2007},
month = {Thu Mar 01 00:00:00 EST 2007}
}


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