TY - JOUR
T1 - Long- and short-range correlations in the ab-initio no-core shell model
AU - Stetcu, Ionel
AU - Barrett, Bruce R.
AU - Navrátil, Petr
AU - Vary, James P.
PY - 2006
Y1 - 2006
N2 - In the framework of the ab-initio no-core shell model (NCSM), we describe the longitudinal-longitudinal distribution function, part of the inclusive (e,e') longitudinal response. In the two-body cluster approximation, we compute the effective operators consistent with the unitary transformation used to obtain the effective Hamiltonian. When short-range correlations are probed, the results display independence from the model space size and length scale. Long-range correlations are more difficult to model in the NCSM and they can be des-cribed only by increasing the model space or increasing the cluster size. In order to illustrate the model space independence for short-range observables, we present results for a large set of model spaces for He4, and in 0-4 Ω model spaces for C12.
AB - In the framework of the ab-initio no-core shell model (NCSM), we describe the longitudinal-longitudinal distribution function, part of the inclusive (e,e') longitudinal response. In the two-body cluster approximation, we compute the effective operators consistent with the unitary transformation used to obtain the effective Hamiltonian. When short-range correlations are probed, the results display independence from the model space size and length scale. Long-range correlations are more difficult to model in the NCSM and they can be des-cribed only by increasing the model space or increasing the cluster size. In order to illustrate the model space independence for short-range observables, we present results for a large set of model spaces for He4, and in 0-4 Ω model spaces for C12.
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U2 - 10.1103/PhysRevC.73.037307
DO - 10.1103/PhysRevC.73.037307
M3 - Article
AN - SCOPUS:33645077334
SN - 0556-2813
VL - 73
JO - Physical Review C - Nuclear Physics
JF - Physical Review C - Nuclear Physics
IS - 3
M1 - 037307
ER -