Universality of short-range nucleon-nucleon correlations

Details Universality of short-range nucleon-nucleon correlations Universality of short-range nucleon-nucleon correlations

2011-07-25

arxiv.org/abs/1107.4956v2

Phys. Rev. C 84, 054003 (2011)

Physics

Nuclear Physics

Nuclear Theory

13 pages, 17 figures, journal version

Scientific paper

10.1103/PhysRevC.84.054003

Short-range correlations between nucleon pairs in different spin-isospin channels are investigated for light nuclei using the Argonne V8' interaction. At distances below 1 fm a universal behavior is found for the deuteron, 3H, 3He and for ground and first excited states in 4He. This behavior in coordinate space is reflected by a universal behavior for the high-momentum components in momentum space. The universality indicates that a pairwise renormalization is possible in order to obtain a universal effective two-body interaction that does not scatter to high momentum states. The exact two-body densities are compared with those obtained using the unitary correlation operator method with simple trial wave functions. The effect of three-body correlations due to the tensor force on the two-body densities is discussed.

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