Momentum distribution and correlation of two-nucleon relative motion in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mmultiscripts><mml:mi mathvariant="normal">He</mml:mi><mml:mprescripts /><mml:none /><mml:mrow><mml:mn>6</mml:mn></mml:mrow></mml:mmultiscripts></mml:math>and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mmultiscripts><mml:mi mathvariant="normal">Li</mml:mi><mml:mprescripts /><mml:none /><mml:mrow><mml:mn>6</mml:mn></mml:mrow>

Horiuchi, W.; Suzuki, Y.

doi:10.1103/physrevc.76.024311

Cited by 48 publications

(40 citation statements)

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“…With Eq. (12), the expectation value of the relative distance, R 2 , is estimated as 3.50 fm, which is consistent with 3.89 fm obtained by an α + n + n three-body calculation [50]. The rms distance of the two protons, r pp , serves as a measure of whether the 4 He core is frozen or not in 6 He.…”

Section: A Ground State Propertiessupporting

confidence: 83%

Electric dipole response ofHe6: Halo-neutron and core excitations

2014

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Electric dipole (E1) response of 6 He is studied with a fully microscopic six-body calculation. The wave functions for the ground and excited states are expressed as a superposition of explicitly correlated Gaussians. Final state interactions of three-body decay channels are explicitly taken into account. The ground state properties and the low-energy E1 strength are obtained consistently with observations. Two main peaks as well as several small peaks are found in the E1 strength function. The peak at the high-energy region indicates a typical macroscopic picture of the giant dipole resonance, the out-of-phase proton-neutron motion. The transition densities of the lower-lying peaks exhibit in-phase proton-neutron motion in the internal region, out-of-phase motion near the surface region, and spatially extended neutron oscillation, indicating a soft-dipole mode and its vibrationally excited mode. The compressional dipole strength is also examined in relation to the soft-dipole mode.

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Section: A Ground State Propertiessupporting

confidence: 83%

Electric dipole response ofHe6: Halo-neutron and core excitations

2014

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“…[29], both np and pp distributions do not show very different behavior except that the former is roughly four times larger than the latter as expected from the relation (5.8). This is in sharp contrast to a specific momentum distribution such that the sum of the two momenta, k 1 +k 2 , is close to zero [25,29], where the nn (pp) momentum distribution, differently from the np distribution, is characterized by a dip around 2 fm −1 . Calculations for other J π states of 4 He are in progress.…”

Section: Spectroscopic Properties Of Few-nucleon Systemsmentioning

confidence: 73%

“…The original G3RS potential contains L 2 and quadratic L·S terms in even partial waves. The contribution of these terms is small [25], and they are ignored in the present calculation. The form of v is written as…”

Section: Spectroscopic Properties Of Few-nucleon Systemsmentioning

confidence: 99%

Global-vector representation of the angular motion of few-particle systems II

et al. 2008

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Abstract. The angular motion of a few-body system is described with global vectors which depend on the positions of the particles. The previous study using a single global vector is extended to make it possible to describe both natural and unnatural parity states. Numerical examples include three-and four-nucleon systems interacting via nucleon-nucleon potentials of AV8 type and a 3α system with a nonlocal αα potential. The results using the explicitly correlated Gaussian basis with the global vectors are shown to be in good agreement with those of other methods. A unique role of the unnatural parity component, caused by the tensor force, is clarified in the 0 − 1 state of 4 He. Twoparticle correlation function is calculated in the coordinate and momentum spaces to show different characteristics of the interactions employed.

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“…The enhancement of the curve around k ∼ 1.3 fm −1 is due to the tensor force, as shown in Ref. [19]. Fig.…”

Section: Specific Examplesmentioning

confidence: 90%

Significance and properties of internucleon correlation functions

Suzuki

Horiuchi

2009

Nuclear Physics A

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We show that a nuclear Hamiltonian and a set of internucleon correlation functions is in a one-to-one correspondence. The correlation functions for $s$-shell nuclei interacting via the two-nucleon interaction of AV8$^\prime$ type are calculated to exhibit the importance of tensor correlations as well as short-range central correlation. The asymptotic behavior of the correlation functions is also discussed.Comment: 19 pages, 5 figure

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Momentum distribution and correlation of two-nucleon relative motion inHe6andLi6

Cited by 48 publications

References 50 publications

Electric dipole response ofHe6: Halo-neutron and core excitations

Electric dipole response ofHe6: Halo-neutron and core excitations

Global-vector representation of the angular motion of few-particle systems II

Significance and properties of internucleon correlation functions

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