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Related papers: Pauli-principle driven correlations in four-neutro…

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Three typical algorithms of Pauli blocking in the quantum molecular dynamics type models are investigated in the nuclear matter, the nucleus and the heavy ion collisions. The calculations in nuclear matter show that the blocking ratios…

Nuclear Theory · Physics 2021-03-25 Xiang Chen , Yingxun Zhang , Zhuxia Li

The effect of initial correlations between nucleons on the nuclear break-up mechanism is studied. A quantum transport theory which extends standard mean-field approach is developed to incorporate short range pairing correlation as well as…

Nuclear Theory · Physics 2009-07-01 Marlene Assie , Denis Lacroix

The ground state energy of infinite symmetric nuclear matter is usually described by strongly interacting nucleons obeying the Pauli exclusion principle. We can imagine a unitary transformation which groups four non identical nucleons (i.e.…

Nuclear Theory · Physics 2011-06-27 Hua Zheng , Aldo Bonasera

Systematic analysis of parameters and properties of the Pauli resonance states are performed for light nuclei $^{6}$Li, $^{7}$Li, $^{8}$Be, $^{9}$Be and $^{10}$B, which are treated as two-cluster systems. The Pauli resonance states are…

Nuclear Theory · Physics 2024-03-18 N. Kalzhigitov , V. S. Vasilevsky

If neutrons are progressively added to a normal nucleus, the Pauli principle forces them into states of higher momentum. When the core becomes neutron-saturated, the nucleus expels most of the wavefunction of the last neutrons outside to…

Nuclear Theory · Physics 2009-11-06 F. Barranco , R. A. Broglia , G. Colo' , E. Vigezzi

Pauli blocking is carefully investigated for the processes of $NN \rightarrow N \Delta$ and $\Delta \rightarrow N \pi$ in heavy-ion collisions, aiming at a more precise prediction of the $\pi^-/ \pi^+$ ratio which is an important observable…

Nuclear Theory · Physics 2020-03-17 Natsumi Ikeno , Akira Ono , Yasushi Nara , Akira Ohnishi

A multi-channel algebraic scattering theory, to find solutions of coupled-channel scattering problems with interactions determined by collective models, has been structured to ensure that the Pauli principle is not violated. By tracking the…

Nuclear Theory · Physics 2009-11-10 L. Canton , G. Pisent , J. P. Svenne , D. van der Knijff , K. Amos , S. Karataglidis

We study the nontrivial interplay of the well known \emph{pairing} and the more complex \emph{quarteting} correlations in the particular case of $N>Z$ atomic nuclei. Within the new Analytical Disentangled Condensate model, by implementing…

Nuclear Theory · Physics 2019-10-01 V. V. Baran , D. S. Delion

The exotic nucleus 11Be has been extensively studied and much experimental information is available on the structure of this system. Treating, within the framework of empirically renormalised nuclear field theory in both configuration and…

Nuclear Theory · Physics 2017-08-30 F. Barranco , G. Potel , R. A. Broglia , E. Vigezzi

In the present work, we systematically study the $\mathcal{\alpha}$ decay preformation factors $P_{\alpha}$ within the cluster-formation model and $\mathcal{\alpha}$ decay half-lives by the proximity potential 1977 formalism for nuclei…

Nuclear Theory · Physics 2019-04-18 Jun-Gang Deng , Jie-Cheng Zhao , Peng-Cheng Chu , Xiao-Hua Li

We assume that the Pauli exclusion principle is violated for neutrinos, and thus, neutrinos obey at least partly the Bose-Einstein statistics. The parameter sin^2 chi is introduced that characterizes the bosonic (symmetric) fraction of the…

High Energy Physics - Phenomenology · Physics 2008-11-26 A. S. Barabash , A. D. Dolgov , R. Dvornicky , F. Simkovic , A. Yu. Smirnov

We present an exploratory study of structure of 13C, 15C, 17C and 19C, showing that the simple one-quasiparticle projected BCS (PBCS) model is capable to account for several important properties of these nuclei. Next we discuss the…

Nuclear Theory · Physics 2008-11-26 A. R. Samana , T. Tarutina , F. Krmpotić , M. S. Hussein , T. T. S. Kuo

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…

The four-nucleon bound state and scattering below three-body breakup threshold are described based on the realistic coupled-channel potential CD Bonn + $\Delta$ which allows the excitation of a single nucleon to a $\Delta$ isobar. The…

Nuclear Theory · Physics 2008-11-26 A. Deltuva , A. C. Fonseca , P. U. Sauer

It is an experimental fact that multi-particle correlations in the final states of high-energy nucleus-nucleus collisions are sensitive to collective correlations of nucleons in the wave functions of the colliding nuclei. Here, I show that…

Nuclear Theory · Physics 2024-01-11 Giuliano Giacalone

We develop a new ab initio many-body approach capable of describing simultaneously both bound and scattering states in light nuclei, by combining the resonating-group method with the use of realistic interactions, and a microscopic and…

Nuclear Theory · Physics 2009-12-31 Sofia Quaglioni , Petr Navratil

A very good linear correlation is found between the four-point charge radius relation $\delta R_{2p-2n}(Z,N)$ with that of quadrupole deformation data in even-even nuclei. This results in a further improved charge radius relation that holds…

Nuclear Theory · Physics 2017-01-19 Bao-Hua Sun , Chuan-Ye Liu , Hao-Xin Wang

The nuclear force has been understood to have a repulsive core at short distances, similar to a molecular force, since Jastrow proposed it in 1951. The existence of the repulsion was experimentally confirmed from the proton-proton…

Nuclear Theory · Physics 2017-05-03 Shigeo Ohkubo

An analytical solution for the time evolution of decay of two identical non interacting quantum particles seated initially within a potential of finite range is derived using the formalism of resonant states. It is shown that the wave…

Quantum Physics · Physics 2015-05-28 Gastón García-Calderón , Luis Guillermo Mendoza-Luna

When a weak decay competes with a strong decay in a 3-level atom, some mechanism is necessary to occasionally stop the strong decay so the weak decay can be completed. Rule (4) provides that mechanism. Using this rule, a weak photon is…

Quantum Physics · Physics 2007-05-23 Richard A Mould