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The nonmesonic weak decay of $\Lambda$ hypernuclei is studied in a shell model framework. A complete strangeness-changing weak $\Lambda N \to NN$ transition potential, based on one boson exchange, is constructed by including the exchange of…

核理论 · 物理学 2008-11-26 A. Parreño , A. Ramos , C. Bennhold

In this work, we study the hidden-strange molecular states composed of a baryon and a vector meson in a coupled-channel $N\rho-N\omega-N\phi-\Lambda K^*-\Sigma K^*$ interaction. With the help of the effective Lagrangians which coupling…

高能物理 - 唯象学 · 物理学 2018-11-28 Jun He , Hongxia Huang , Dian-Yong Chen , Xinmei Zhu

We investigate the observational consequences of a novel class of stable interacting dark energy (IDE) models, featuring interactions between dark matter (DM) and dark energy (DE). In the first part of our work, we start by considering two…

宇宙学与河外天体物理 · 物理学 2018-12-13 Weiqiang Yang , Supriya Pan , Eleonora Di Valentino , Rafael C. Nunes , Sunny Vagnozzi , David F. Mota

The long-range $\Lambda N-\Sigma N$ interaction is modeled by a configuration space meson-exchange potential matrix coupling to channels with $\Delta$ and $\Sigma(1385)$ isobars. An inner boundary condition, based on $R$-matrix theory,…

核理论 · 物理学 2009-10-22 W. R. Greenberg , E. L. Lomon

We study the ground state properties of the Bose-Hubbard model with attractive interactions on a M-site one-dimensional periodic -- necklace-like -- lattice, whose experimental realization in terms of ultracold atoms is promised by a…

统计力学 · 物理学 2007-05-23 Pierfrancesco Buonsante , Vittorio Penna , Alessandro Vezzani

We present a nonrelativistic transition potential for the weak strangeness-changing reaction $\Lambda N \to NN$. The potential is based on a one meson exchange model (OME), where, in addition to the long-ranged pion, the exchange of the…

核理论 · 物理学 2009-10-31 A. Parreño , C. Bennhold , A. Ramos

We study the soft electric dipole ($E1$) response of deformed halo nuclei $^{31}$Ne and $^{37}$Mg using a deformed Woods-Saxon potential, with the potential depth adjusted to reproduce empirical separation energy of last neutron orbit,…

核理论 · 物理学 2024-12-31 Xiao Lu , Hiroyuki Sagawa , Shan-Gui Zhou

Energy levels of the four lowest bands in 160,162,164Dy and 168Er, B(E2) transition strengths between the levels, and the B(M1) strength distribution of the ground state, all calculated within the framework of pseudo-SU(3) model, are…

核理论 · 物理学 2007-05-23 J. P. Draayer , G. Popa , J. G. Hirsch

The $\alp-\alp$ interaction potential is obtained within the double folding model with density-dependent Gogny effective interactions as input. The one nucleon knock-on exchange kernel including recoil effects is localized using the…

核理论 · 物理学 2013-10-18 M. Lassaut , F. Carstoiu , V. Balanica

This work treats few-body systems consisting of neutrons interacting with a $^{4}{\mathrm{He}}$ nucleus. The adiabatic hyperspherical representation is utilized to solve the $N$-body Schr$\ddot{\mathrm{o}}$dinger equation for the three- and…

核理论 · 物理学 2025-11-25 Michael D. Higgins , Chris H. Greene

By solving exact three-body equations, we study the three-baryon system with charm $+1$. We look for possible bound states using baryon-baryon interactions obtained from a chiral constituent quark model. The smaller effect of the $\Lambda_c…

核理论 · 物理学 2015-08-27 H. Garcilazo , A. Valcarce , T. F. Carames

The understanding of the mechanisms responsible for superconductivity in strongly correlated systems is an interesting and important subject in condensed matter physics. Several theoretical proposals were considered for these systems. The…

We investigate properties of the $N$(nucleon)-$\Omega$(Omega) interaction in lattice QCD to seek for possible dibaryon states in the strangeness $-3$ channel. We calculate the $N\Omega$ potential through the equal-time Nambu-Bethe-Salpeter…

We investigated a possible interaction between cold dark matter and dark energy, corresponding to a well-known interacting dark energy model discussed in the literature within the context of resolving the Hubble tension. We put constraints…

宇宙学与河外天体物理 · 物理学 2024-08-21 David Benisty , Supriya Pan , Denitsa Staicova , Eleonora Di Valentino , Rafael C. Nunes

The $|\Delta S|=1$ $\Lambda N$ interaction, responsible for the decay of hypernuclei, is studied by means of an Effective Field Theory where the long range physics is described by pion and kaon exchange mechanisms, and its short range…

核理论 · 物理学 2007-05-23 A. Parreno , C. Bennhold , B. R. Holstein

We use thermodynamic Bethe ansatz to study nonrelativistic scattering theory of low energy excitations of 1D Hubbard model, using the $S$-matrices proposed by E\ss ler and Korepin. This model can be described by two types of excitation…

高能物理 - 理论 · 物理学 2010-02-05 Changrim Ahn , Kong-Ju-Bock Lee , Soonkeon Nam

Newly, first-principles lattice QCD results at the physical pion mass, $ m_\pi \backsimeq 137.1 $ MeV, have been reported by the HAL QCD Collaboration for the S-wave interaction between the nucleon ($N$) and the triply charmed Omega baryon…

核理论 · 物理学 2026-02-11 Faisal Etminan , Lucas Happ

Superfluid $^{3}$He experiments show strong deviation from the weak-coupling limit of the Ginzburg-Landau theory, and this discrepancy grows with increasing pressure. Strong-coupling contributions to the quasiparticle interactions are known…

超导电性 · 物理学 2009-11-11 H. Choi , J. P. Davis , J. Pollanen , T. M. Haard , W. P. Halperin

The partial wave projection of the Nijmegen soft-core potential model for Meson-Pair-Exchange (MPE) for NN-scattering in momentum space is presented. Here, nucleon-nucleon momentum space MPE-potentials are NN-interactions where either one…

核理论 · 物理学 2009-11-07 Th. A. Rijken , H. Polinder , J. Nagata

I consider non-relativistic bosons interacting via pairwise potentials with infinite scattering length and supporting no two-body bound states. To lowest order in effective field theory, these conditions lead to non-interacting bosons,…

量子气体 · 物理学 2019-07-16 Manuel Valiente
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