PaperPanorama

Nuclear Theory·nucl-th

Monday·January 29, 2024

11 papers2 primary·9 cross-listed

  1. 01

    Generalized coherent states satisfying the Pauli principle in a nuclear cluster model

    Takayuki Myo · Kiyoshi Kato

    We propose a new basis state, which satisfies the Pauli principle in the nuclear cluster model. The basis state is defined as the generalized coherent state of the harmonic oscillator wave function using a pair of the creation operators and is orthogonal to the Pauli-forbidden states having smaller quanta. In the coherent basis state, the range parameter is changeable and controls the radial dilation. This property is utilized for the precise description of the relative motion between nuclear clusters. We show the reliability of this framework for the system of Be in the semi-microscopic orthogonality condition model. We obtain the resonances and non-resonant continuum states of with complex scaling. The resonance solutions and the phase shifts of the - scattering agree with those using the conventional projection operator method to remove the Pauli-forbidden states. We further discuss the extension of the present framework to the multi- cluster systems using the SU(3) wave functions.

    nucl-thPRC(2024)·2 citations
  2. 02

    Strongly interacting matter in a sphere at nonzero magnetic field

    Bing-Jun Zuo🇨🇳 · Zheng Zhang🇨🇳 · Chao Shi🇨🇳 · Yong-Feng Huang🇨🇳

    We investigate the chiral phase transition within a sphere under a uniform background magnetic field. The Nambu--Jona-Lasinio (NJL) model is employed and the MIT boundary condition is imposed for the spherical confinement. Using the wave expansion method, the diagonalizable Hamiltonian and energy spectrum are derived for the system. By solving the gap equation in the NJL model, the influence of magnetic field on quark matter in a sphere is studied. It is found that inverse magnetic catalysis occurs at small radii, while magnetic catalysis occurs at large radii. Additionally, both magnetic catalysis and inverse magnetic catalysis are observed at the intermediate radii ( fm).

    nucl-thhep-thPRD(2024)·0 citations

Affiliations

first authorsco-authorsvia INSPIRE