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A complete characterization of the structure of nuclei can be obtained by combining information arising from inelastic scattering, Coulomb excitation and $\gamma-$decay, together with one- and two-particle transfer reactions. In this way it…

核理论 · 物理学 2015-09-23 A. Idini , G. Potel , F. Barranco , E. Vigezzi , R. A. Broglia

The set of quantum states consists of density matrices of order $N$, which are hermitian, positive and normalized by the trace condition. We analyze the structure of this set in the framework of the Euclidean geometry naturally arising in…

量子物理 · 物理学 2016-05-17 Ingemar Bengtsson , Stephan Weis , Karol Życzkowski

In this paper, we have calculated the energy spectrum of 12C isotope by cluster model. The experimental results show that the "Hoyle" state at 7.65 MeV in 12C isotope has a well-developed three-alpha structure. Hence, we select a three-body…

核理论 · 物理学 2016-02-12 Nafiseh Roshanbakht , Mohammad Reza Shojaei

A great deal of research work has been undertaken in alpha-clustering study since the pioneering discovery of 12C+12C molecular resonances half a century ago. Our knowledge on physics of nuclear molecules has increased considerably and…

核实验 · 物理学 2016-12-21 C. Beck

The nucleus is one of the most multi-faceted many-body systems in the universe. It exhibits a multitude of responses depending on the way one 'probes' it. With increasing technical advancements of beams at the various accelerators and of…

核实验 · 物理学 2015-05-18 Kris Heyde , Peter von Neumann-Cosel , Achim Richter

Nuclear pores have an approximately uniform distribution in the nuclear envelope of most living cells. Hence, the morphology of the nuclear envelope is a spherical stomatocyte with a high genus. We have investigated the morphology of…

软凝聚态物质 · 物理学 2016-08-25 Hiroshi Noguchi

We investigate the self-organization of strongly interacting particles confined in 1D and 2D. We consider hardcore bosons in spinless Hubbard lattice models with short-range interactions. We show that many-body states with topological…

强关联电子 · 物理学 2019-09-12 Ioannis Kleftogiannis , Ilias Amanatidis

Most atomic nuclei exhibit ellipsoidal shapes characterized by quadrupole deformation $\beta_2$ and triaxiality $\gamma$, and sometimes even a pear-like octupole deformation $\beta_3$. The STAR experiment introduced a new…

核实验 · 物理学 2025-10-24 STAR Collaboration

$\alpha$-clustering study since the pioneering discovery of $^{12}$C+$^{12}$C molecular resonances half a century ago. Our knowledge on physics of nuclear molecules has increased considerably and nuclear clustering remains one of the most…

核实验 · 物理学 2017-08-23 C. Beck

The nuclear equation of state is explored with the constrained HFB approach for self conjugate nuclei. It is found that beyond a certain low, more or less universal density, those nuclei spontaneously cluster into A/4 alpha particles with A…

核理论 · 物理学 2015-06-17 Michel Girod , Peter Schuck

The energy spectrum of the $^{12}C$ nucleus with $(J^{\pi}, T)=(0^+,0)$ and $(2^+,0)$ is investigated in the framework of the multicluster dynamical model by using a deep $\alpha \alpha$-potential with forbidden states in the S and D waves.…

核理论 · 物理学 2008-11-26 E. M. Tursunov

A halo is an intrinsically quantum object defined as a bound state of a spatial size which extends deeply into the classically forbidden region. Previously, halos have been observed in bound states of two and less frequently of three atoms.…

量子气体 · 物理学 2023-04-26 G. Guijarro , G. E. Astrakharchik , J. Boronat

Some emerging concepts of nuclear structure are overviewed. (1) Background: the many-body quantum structure of atomic nucleus, a complex system comprising protons and neutrons (called nucleons collectively), has been studied largely based…

核理论 · 物理学 2022-01-19 Takaharu Otsuka

Lowest energy spectrum of the $^{12}$C nucleus is analyzed in the 3$\alpha$ cluster model with a deep $\alpha\alpha$-potential of Buck, Friedrich and Wheatley with Pauli forbidden states in the $S$ and $D$ waves. The direct…

核理论 · 物理学 2022-04-19 E. M. Tursunov , I. Mazumdar

We studied the ground and excited states of $^{12}$C based on variational calculations after spin-parity projection in a framework of antisymmetrized molecular dynamics(AMD). The calculations systematically reproduce various experimental…

核理论 · 物理学 2016-08-16 Y. Kanada-En'yo

An ab-initio description of atomic nuclei that solves the nuclear many-body problem for realistic nuclear forces is expected to possess a high degree of predictive power. In this contribution we treat the main obstacle, namely the…

核理论 · 物理学 2017-08-23 Hans Feldmeier , Thomas Neff , Robert Roth

We investigate ultrarelativistic collisions of the 12C nucleus with heavy targets and show that the harmonic flow measures based on ratios of cumulant moments are particularly suited to study the intrinsic deformation of the 12C wave…

核理论 · 物理学 2014-12-10 Piotr Bozek , Wojciech Broniowski , Enrique Ruiz Arriola , Maciej Rybczynski

Weakly bound states often occur in nuclear physics. To precisely understand their properties, the coupling to the continuum should be worked out explicitely. In a first step, we use a simple nuclear model in the continuum and on a lattice…

核理论 · 物理学 2020-12-21 J. -J. Wu , Ulf-G. Meißner

$\alpha$-cluster correlations in the $0^+_1$ and $3^-_1$ states of $^{12}$C and $^{16}$O are studied using the method of antisymmetrized molecular dynamics, with which nuclear structures are described from nucleon degrees of freedom without…

核理论 · 物理学 2016-08-15 Yoshiko Kanada-En'yo , Yoshimasa Hidaka

In this short review, I discuss the sensitivity of the generation of the light and the life-relevant elements like carbon and oxygen under changes of the parameters of the Standard Model pertinent to nuclear physics. Chiral effective field…

高能物理 - 理论 · 物理学 2015-05-05 Ulf-G. Meißner