Fermion Pair Dynamics in Open Quantum Systems

Wang, S. M.; Nazarewicz, W.

doi:10.1103/physrevlett.126.142501

Cited by 25 publications

(30 citation statements)

References 54 publications

(92 reference statements)

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“…However, for 12 O, the emitted protons originating from these configurations merge together resulting in a broad distribution seen in Fig. 1(a), which shows dramatically different decay-dynamics compared to 6 Be [13]. This result is in agreement with the calculated flux current [31], which shows a competition between diproton and cigarlike decays constituting a democratic decay.…”

supporting

confidence: 79%

“…As shown in Ref. [13], the low-continuum is crucial during the decay process. Therefore, in the hyperradial part, we used the Berggren basis for the K < 10 channels and the harmonic oscillator basis with the oscillator length of 1.75 fm and N max = 40 for the higher-angular-momentum channels.…”

mentioning

confidence: 80%

“…In our previous work [13], we described the 2p decay of 6 Be and compared it with an artificial 2n decay of 6 He using a recently developed time-dependent approach. By comparing the dynamics of 2p emission with 2n decay, we showed that the decay dynamics and long-range correlations are strongly impacted by both initial-state and final-state interactions [14][15][16].…”

mentioning

confidence: 99%

“…In particular, the recently measured energy correlation of the emitted protons from the x /µx + k 2 y /µy is the total momentum and µx (µy) is the reduced mass. The projected contour map represents the sum of all the configurations, in which the interference frequencies [13] are marked by dotted lines.…”

mentioning

confidence: 99%

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Nucleon-nucleon correlations in the extreme oxygen isotopes

Wang,

Nazarewicz,

Charity

et al. 2021

Preprint

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There has been an upsurge of interest in two-nucleon decays thanks to the studies of nucleonnucleon correlations. In our previous work, based on a novel time-dependent three-body approach, we demonstrated that the energy and angular correlations of the emitted nucleons can shed light on the structure of nucleonic pairs formed inside the nucleus. In this work, we apply the new framework to study the decay dynamics and properties of some extreme proton-rich and neutron-rich oxygen isotopes, including two-proton (2p) decays of 11,12 O and two-neutron (2n) decay of 26 O. Here we show that the low-components of 11,12 O wave functions, which are affected by continuum and configuration-interaction effects, strongly impact decay dynamics and asymptotic correlations. In the calculated wave functions of 11,12 O, diproton and cigarlike structures merge together during the tunneling process and the resulting energy-and angular correlations are very consistent with the experimental data. The asymptotic correlations of the 2n decay of 26 O dramatically change as the two-neutron decay energy approaches the zero-energy threshold. The small reported value of Q2n suggests that the 2n decay of this nucleus can be understood in terms of the universal phase-space limit.

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supporting

confidence: 79%

mentioning

confidence: 80%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Nucleon-nucleon correlations in the extreme oxygen isotopes

Wang,

Nazarewicz,

Charity

et al. 2021

Preprint

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“…Some studies have shown that the proton pair momentum correlation function is an effective probe to study the SRC effect. Momentum correlation function, also known as the Hanbury-Brown and Twiss (HBT) effect [40][41][42][46][47][48][49][50][51], is widely used in the study of heavy ion collision dynamics as well as the Fermion pair dynamics in three-body decay [52][53][54][55][56][57]. In this paper, Lednicky and Lyuboshitz's analytical method (LL model) [58] is used to calculate momentum correlation function.…”

Section: Lednicky and Lyuboshitz's Analytical Methodsmentioning

confidence: 99%

Short range correlations in the extended quantum molecular dynamics model

Shen,

Huang,

2021

Preprint

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Short-range potential has been added into an extended quantum molecular dynamics (EQMD) model. The RMS radius, binding energy and momentum distribution of 12 C with different initial structures and short-range potential parameters have been checked. The separation energy of 12 C(p,2p) 11 B reaction is calculated and compared with the experimental data, it indicates that our modified EQMD model can be taken as a reliable tool for studying proton pair knock-out reaction. Furthermore, the short range correlation effects on emission time and momentum spectrum of two protons are discussed. Finally, the momentum correlation function of the emitted proton pair is calculated by the Lednicky and Lyuboshitz's analytical method. The result explains that short-range repulsion causes high momentum tail and weakens the momentum correlation function.

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Recent progress in two-proton radioactivity

et al. 2022

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During the last few decades, rare isotope beam facilities have provided unique data for studying the properties of nuclides located far from the beta-stability line. Such nuclei are often accompanied by exotic structures and radioactive modes, which represent the forefront of nuclear research. Among them, two-proton (2p) radioactivity is a rare decay mode found in a few highly proton-rich isotopes. The 2p decay lifetimes and properties of emitted protons hold invaluable information regarding the nuclear structures in the presence of a low-lying proton continuum; as such, they have attracted considerable research attention. In this review, we present some of the recent experimental and theoretical progress regarding the 2p decay, including technical innovations for measuring nucleonnucleon correlations and developments in the models that connect their structural aspects with their decay properties. This impressive progress should play a significant role in elucidating the mechanism of these exotic decays, probing the corresponding components inside nuclei, and providing deep insights into the open quantum nature of dripline systems.

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Fermion Pair Dynamics in Open Quantum Systems

Cited by 25 publications

References 54 publications

Nucleon-nucleon correlations in the extreme oxygen isotopes

Nucleon-nucleon correlations in the extreme oxygen isotopes

Short range correlations in the extended quantum molecular dynamics model

Recent progress in two-proton radioactivity

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