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Nuclear Theory·nucl-th

Monday·December 21, 2015

7 papers—5 primary·2 cross-listed

All7Primary5Cross-lists2
  1. 01

    van der Waals and Casimir-Polder interactions between neutrons

    James F. Babb · Mahir S. Hussein

    We investigate the van der Waals interaction between neutrons using the theory of Casimir and Polder, wherein the potential for asymptotically large separations falls off as the inverse seventh power, and compare it to the similar interaction between a neutron and a proton, for which the asymptotic interaction falls off as the inverse fourth power. Modifications of the formalism to extend the validity to smaller separations using dynamic electric and magnetic dipole polarizability data are discussed

    nucl-thEPJ Web Conf.(2016)·1 citation
  2. 02

    Hollow nuclear matter

    Gao-Chan Yong

    It is generally considered that an atomic nucleus is always compact. Based on the isospin-dependent Boltzmann nuclear transport model, here I show that large block nuclear matter or excited nuclear matter may both be hollow. And the size of inner bubble in these matter is affected by the charge number of nuclear matter. Existence of hollow nuclear matter may have many implications in nuclear or atomic physics or astrophysics as well as some practical applications.

    nucl-thastro-ph.HEnucl-exPRC(2016)·10 citations
  3. 03

    Correlations between neutrons and protons near Fermi surface and of super-heavy nuclei

    Ning Wang🇨🇳 · Min Liu🇨🇳 · Xizhen Wu🇨🇳 · Jie Meng🇨🇳

    The shell corrections and shell gaps in nuclei are systematically studied with the latest Weizsäcker-Skyrme (WS4) mass model. We find that most of asymmetric nuclei with (sub)-shell closures locate along the shell stability line (SSL), , which might be due to a strong correlation between neutrons and protons near Fermi surface. The double magicity of nuclei Si and Ni is predicted according to the corresponding shell gaps, shell corrections and nuclear deformations. The unmeasured super-heavy nuclei 118 and 120, with relatively large shell gaps and shell corrections, also locate along the SSL, whereas the traditional magic nucleus Fl evidently deviates from the line. The -decay energies of super-heavy nuclei with are simultaneously investigated by using the WS4 model together with the radial basis function corrections. For super-heavy nuclei with large shell corrections, the smallest -decay energy for elements , 117 and 118 in their isotope chains locates at rather than .

    nucl-thPRC(2016)·22 citations
  4. 04

    Constrained-Path Quantum Monte-Carlo Approach for Non-Yrast States Within the Shell Model

    J. Bonnard🇮🇹 · O. Juillet🇫🇷

    The present paper intends to present an extension of the constrained-path quantum Monte-Carlo approach allowing to reconstruct non-yrast states in order to reach the complete spectroscopy of nuclei within the interacting shell model. As in the yrast case studied in a previous work, the formalism involves a variational symmetry-restored wave function assuming two central roles. First, it guides the underlying Brownian motion to improve the efficiency of the sampling. Second, it constrains the stochastic paths according to the phaseless approximation to control sign or phase problems that usually plague fermionic QMC simulations. Proof-of-principle results in the valence space are reported. They prove the ability of the scheme to offer remarkably accurate binding energies for both even- and odd-mass nuclei irrespective of the considered interaction.

    nucl-thEPJA(2016)·0 citations
  5. 05

    Three-body systems in physics of cold atoms and halo nuclei

    Chen Ji

    Few-body systems, such as cold atoms and halo nuclei, share universal features at low energies, which are insensitive to the underlying inter-particle interactions at short ranges. These low-energy properties can be investigated in the framework of effective field theory with two-body and three-body contact interactions. I review the effective-field-theory studies of universal physics in three-body systems, focusing on the application in cold atoms and halo nuclei.

    nucl-thcond-mat.quant-gasphysics.atom-phIJMPE(2016)·8 citations

Affiliations

first authorsco-authorsvia INSPIRE