Computation of Spectroscopic Factors with the Coupled-Cluster Method

Jensen, O.; Hagen, Gaute; Papenbrock, T.; Dean, David Jarvis; Vaagen, J. S.

doi:10.1103/PhysRevC.82.014310

Computation of Spectroscopic Factors with the Coupled-Cluster Method

Journal Article · Fri Jan 01 04:00:00 EST 2010 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PhysRevC.82.014310· OSTI ID:986400

Jensen, O. ^[1]; Hagen, Gaute ^[2]; Papenbrock, T. ^[3]; Dean, David Jarvis ^[2]; Vaagen, J. S. ^[1]

University of Bergen, Bergen, Norway
ORNL
University of Tennessee, Knoxville (UTK) & Oak Ridge National Laboratory (ORNL)

We present a calculation of spectroscopic factors within coupled-cluster theory. Our derivation of algebraic equations for the one-body overlap functions are based on coupled-cluster equation-of-motion solutions for the ground and excited states of the doubly magic nucleus with mass number A and the odd-mass neighbor with mass A-1. As a proof-of-principle calculation, we consider ^{16}O and the odd neighbors ^{15}O and ^{15}N, and compute the spectroscopic factor for nucleon removal from ^{16}O. We employ a renormalized low-momentum interaction of the V_{low-k} type derived from a chiral interaction at next-to-next-to-next-to-leading order. We study the sensitivity of our results by variation of the momentum cutoff, and then discuss the treatment of the center of mass.

Research Organization:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Oak Ridge Leadership Computing Facility (OLCF); Oak Ridge National Laboratory (ORNL)

Sponsoring Organization:: DOE Office of Science; SC USDOE - Office of Science (SC)

DOE Contract Number:: AC05-00OR22725

OSTI ID:: 986400

Journal Information:: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 1 Vol. 82; ISSN 0556-2813; ISSN 1089-490X

Country of Publication:: United States

Language:: English

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