TY - JOUR

T1 - Short range correlations and the isospin dependence of nuclear correlation functions

AU - Cruz-Torres, R.

AU - Schmidt, A.

AU - Miller, G. A.

AU - Weinstein, L. B.

AU - Barnea, N.

AU - Weiss, R.

AU - Piasetzky, E.

AU - Hen, O.

N1 - Publisher Copyright:
© 2018 The Authors

PY - 2018/10/10

Y1 - 2018/10/10

N2 - Pair densities and associated correlation functions provide a critical tool for introducing many-body correlations into a wide-range of effective theories. Ab initio calculations show that two-nucleon pair-densities exhibit strong spin and isospin dependence. However, such calculations are not available for all nuclei of current interest. We therefore provide a simple model, which involves combining the short and long separation distance behavior using a single blending function, to accurately describe the two-nucleon correlations inherent in existing ab initio calculations. We show that the salient features of the correlation function arise from the features of the two-body short-range nuclear interaction, and that the suppression of the pp and nn pair-densities caused by the Pauli principle is important. Our procedure for obtaining pair-density functions and correlation functions can be applied to heavy nuclei which lack ab initio calculations.

AB - Pair densities and associated correlation functions provide a critical tool for introducing many-body correlations into a wide-range of effective theories. Ab initio calculations show that two-nucleon pair-densities exhibit strong spin and isospin dependence. However, such calculations are not available for all nuclei of current interest. We therefore provide a simple model, which involves combining the short and long separation distance behavior using a single blending function, to accurately describe the two-nucleon correlations inherent in existing ab initio calculations. We show that the salient features of the correlation function arise from the features of the two-body short-range nuclear interaction, and that the suppression of the pp and nn pair-densities caused by the Pauli principle is important. Our procedure for obtaining pair-density functions and correlation functions can be applied to heavy nuclei which lack ab initio calculations.

KW - Contact formalism

KW - Correlation function

KW - Short range correlations

UR - http://www.scopus.com/inward/record.url?scp=85052942963&partnerID=8YFLogxK

U2 - 10.1016/j.physletb.2018.07.069

DO - 10.1016/j.physletb.2018.07.069

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AN - SCOPUS:85052942963

SN - 0370-2693

VL - 785

SP - 304

EP - 308

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

ER -